СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗГОТОВЛЕНИЯ ИЗДЕЛИЯ ТРУБЧАТОЙ ФОРМЫ ИЗ ТЕРМОПЛАСТИЧНОГО МАТЕРИАЛА

Способ и устройство по изобретениям предназначены для изготовления изделий трубчатой формы (например, гофрированной трубки) из термопластичного материала. Устройство содержит головку экструдера, имеющую дорн, перемещаемый с целью изменения площади поперечного сечения отверстия головки, плунжер, предназначенный для экструдирования определенного количества пластичного материала через головку, и вытяжной блок, направленно вытягивающий из головки выпускаемое ею пластиковое изделие трубчатой формы. Перемещениями вытяжного блока, плунжера и дорна управляют таким образом, чтобы движение вытяжного блока и плунжера происходило согласно профилям скоростей, автономно регулируемым по всему пути вытяжного блока и плунжера. Перемещение же дорна совершается согласно профилю позиций, автономно регулируемому по всему пути вытяжного блока или плунжера, причем это перемещение должно происходить за то же время, что и перемещение вытяжного блока и плунжера. В результате толщину стенки изделия трубчатой формы ...

ПЛАСТМАССОВАЯ ТРУБА, СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ И СПОСОБ СОЕДИНЕНИЯ ПЛАСТМАССОВЫХ ТРУБ

Изобретение относится к пластмассовым трубам. Размеры трубы и защитного слоя таковы, что отношение внешнего диаметра трубы к толщине защитного слоя составляет по меньшей мере 70, а предпочтительно по меньшей мере 100, и когезионная прочность наружного защитного слоя, за исключением любых линий наименьшего сопротивления, по крайней мере на концах трубы больше, чем адгезионное сцепление между наружным защитным слоем и внутренней трубой. Способ изготовления пластмассовой трубы включает совместное (бипрофильное) выдавливание из головки экструдера расплавленных пластмассовых материалов, из которых формируются внутренняя труба и наружный защитный слой, приведение расплавленных пластмассовых материалов в контакт в неостывшем состоянии и предоставление им возможности остывать в естественных условиях таким образом, что после остывания наружный защитный слой может быть отслоен от внутренней трубы по крайней мере на концах трубы. Обнажаемая поверхность внутренней трубы становится пригодной для выполнения ...

СПОСОБЫ ПРОИЗВОДСТВА ВОДНОЙ ЭМУЛЬСИИ, ТОНКОДИСПЕРСНОГО ПОРОШКА И РАСТЯНУТОГО ПОРИСТОГО ТЕЛА ИЗ МОДИФИЦИРОВАННОГО ПОЛИТЕТРАФТОРЭТИЛЕНА

Настоящее изобретение относится к способу получения водной эмульсии модифицированного политетрафторэтилена, способу получения тонкодисперсного порошка модифицированного политетрафторэтилена и способу получения растянутого пористого тела модифицированного политетрафторэтилена. Способ получения водной эмульсии модифицированного политетрафторэтилена представляет собой способ получения водной эмульсии неплавленолитых частиц модифицированного политетрафторэтилена, имеющих средний диаметр первичных частиц от 0,10 до 0,30 мкм, в котором тетрафторэтилен и перфторалкилэтилен, представленный следующей формулой (1), подвергают эмульсионной полимеризации в водной среде с использованием инициатора полимеризации в присутствии фторированного анионного поверхностно-активного вещества, имеющего LogPOW от 2,4 до 3,4, где фторированное анионное поверхностно-активное вещество представляет собой фторированное поверхностно-активное вещество, имеющее 6 или 7 атомов углерода, 0 или 1 атом водорода, 0 или от 1 ...

ТРУБА

Изобретение относится к трубе, изготавливаемой из нескольких различных пластмассовых материалов в устройстве для экструдирования, в котором создаются высокие давления и большие механические напряжения в участке насадки, то есть на участке экструдирования. Труба выполнена из нескольких различных материалов и содержит внутренний слой из пластмассы, внутренний электродный слой, изолирующий слой и внешний электродный слой. Внутренний электродный слой расположен снаружи внутреннего слоя из пластмассы. Изолирующий слой расположен на внешней стороне внутреннего электродного слоя. Внешний электродный слой размещен на внешней стороне изолирующего слоя. Внутренний слой из пластмассы выполнен методом непрерывного экструдирования. Изолирующий слой выполнен из вспененной пластмассы. Изобретение позволяет своевременно обнаружить повреждения и утечки в районах магистральных труб и облегчить их местонахождение. 5 з.п. ф-лы, 10 ил.

ЭЛАСТИЧНАЯ ПЛЕНКА, СОДЕРЖАЩАЯ ВОЗОБНОВЛЯЕМЫЙ ПОЛИМЕР КРАХМАЛА

Изобретение относится к пленке, которую применяют в составе разнообразных одноразовых изделий, например подгузников, гигиенических салфеток, одежды для взрослых, страдающих недержанием, перевязочного материала и т.д. Эластичная пленка, включающая термопластическую композицию, где термопластическая композиция включает по меньшей мере один полимер крахмала, составляющий от приблизительно 1 мас.% до приблизительно 30 мас.% от содержания полимеров в пленке, по меньшей мере один эластомерный полимер, составляющий от приблизительно 30 мас.% до приблизительно 95 мас.% от содержания полимеров в пленке и по меньшей мере один пластификатор, составляющий от приблизительно 0,1 мас.% до приблизительно 30 мас.% от массы пленки, причем массовое отношение количества эластомерных полимеров к количеству полимеров крахмала в пленке составляет от приблизительно 1 до приблизительно 10 и удлинение эластичной пленки как в машинном направлении, так и в поперечном направлении составляет приблизительно 250 % или ...

ПОЛИМЕРНАЯ ОБВЯЗОЧНАЯ ЛЕНТА ДЛЯ ОБВЯЗЫВАНИЯ ОДНОГО ИЛИ НЕСКОЛЬКИХ ОБЪЕКТОВ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Объектом настоящего изобретения является полимерная обвязочная лента для обвязывания одного или нескольких объектов. Полимерная обвязочная лента содержит следующие компоненты: а) вплоть до приблизительно 90 вес.% полиэфира, b) от приблизительно 1 до приблизительно 5 вес.% полиолефина; с) от приблизительно 5 до приблизительно 10 вес.% волокнистого материала. Изобретение также относится к способу изготовления полимерной обвязочной ленты. 2 н. и 8 з.п. ф-лы, 1 ил.

ЭКСТРУЗИОННЫЙ СПОСОБ ПОЛУЧЕНИЯ ПЛОСКОЙ НИТИ ИЗ СИНТЕТИЧЕСКОГО СЫРЬЯ

Изобретение относится к способу переработки полимеров, в частности к способу получения из полимеров методом экструзии плоских синтетических нитей с заранее заданными характеристиками. Способ включает в себя формирование по меньшей мере двух расплавов с различными свойствами и распределение этих расплавов, по меньшей мере, по трем слоям для образования синтетической пленки, охлаждение этой пленки, резку ее на полосы, а также вытягивание нарезанных полос для образования нитей и намотку полученных таким образом нитей на сердечники. Синтетическое сырье используют в виде гранул, порошка или агломерата. Полученную пленку охлаждают в ванне с водой. После охлаждения пленки проводят удаление воды с ее поверхности. Внутренний слой пленки формируют с наполнителем на основе карбоната кальция в количестве 0,1-50% от массы основного сырья внутреннего слоя. Техническим результатом изобретения является снижение себестоимости изготавливаемой продукции, а также снижение износа экструзионной линии. 12 з.п ...

МАТРИЦА, СИСТЕМА И СПОСОБ СОВМЕСТНОЙ ЭКСТРУЗИИ МНОЖЕСТВА ЖИДКОСТНЫХ СЛОЕВ

Заявленное изобретение относится к матрице для совместной экструзии, системе совместной экструзии и способу совместной экструзии множества жидкостных слоев. Техническим результатом заявленного изобретения является сохранение физической целостности и независимых свойств микрослоев получаемой пленки в сочетании с обычными более толстыми слоями. Технический результат достигается матрицей для совместной экструзии множества жидкостных слоев, которая содержит пуансон для начального формообразования, одну или несколько распределительных плит. Причем канал для выпуска жидкости из каждой плиты гидравлически сообщается с пуансоном для начального формообразования и служит для осаждения жидкостного слоя на этот пуансон. Узел формирования микрослоев содержит пуансон для микрослоев и множество микрослойных распределительных плит. Причем канал для выпуска жидкости из каждой этой плиты гидравлически сообщается с пуансоном для формирования микрослоев и служит для осаждения жидкостного микрослоя на этот ...

СПОСОБ ПРОИЗВОДСТВА МНОГОФУНКЦИОНАЛЬНОГО ЭЛАСТИЧНОГО СЛОИСТОГО МАТЕРИАЛА

Заявленная группа изобретений относится к способу формирования эластичных пленочных нетканых многослойных материалов и к эластичным многослойным материалам, сформированным с помощью указанного способа. Техническим результатом заявленной группы изобретений является создание более дешевого поточного способа производства эластичных нетканых слоистых материалов совместно с производством эластичного пленочного материала, с помощью которого можно производить множество эластичных слоистых материалов. Технический результат достигается в способе формирования эластичных пленочных нетканых многослойных материалов. Способ предусматривает экструдирование термопластичной полимерной композиции, содержащей эластичный полимер. Затем выдувание экструдированной термопластичной полимерной композиции с образованием выдуваемого пленочного пузыря. Потом направление пузыря к первому зажиму, образованному между парой роликов, для сплющивания пузыря в образующийся пленочный лист. Обеспечение по меньшей мере первого ...

МИКРОСТРУКТУРИРОВАННЫЕ МНОГОСЛОЙНЫЕ ЭЛАСТИЧНЫЕ СЛОИСТЫЕ МАТЕРИАЛЫ С ПОВЫШЕННОЙ ПРОЧНОСТЬЮ И ЭЛАСТИЧНОСТЬЮ И СПОСОБЫ ИХ ПОЛУЧЕНИЯ

Изобретение относится к области эластичных слоистых материалов для обеспечения функций удобства и плотного прилегания в средствах личной гигиены. Раскрыты более прочные эластичные слоистые материалы, имеющие улучшенный микроструктурированный внешний вид, а также способы получения слоистых материалов. Многослойные эластичные слоистые материалы содержат по меньшей мере один термопластичный эластомерный слой пленки и по меньшей мере один слой пластика, которые совместно экструдируют вместе, растягивают и затем расслабляют. Полученные слоистые материалы имеют повышенную общую прочность и эластичность. 2 н. и 18 з.п. ф-лы, 1 ил., 4 табл., 4 пр.

СОЭКСТРУДИРОВАННАЯ МНОГОСЛОЙНАЯ ПЛАСТМАССОВАЯ ТРУБА, СПОСОБ И УСТРОЙСТВО ДЛЯ ЕЕ ПОЛУЧЕНИЯ

Изобретение относится к области производства труб. Соэкструдированная многослойная пластмассовая труба содержит одну или более внутренних труб, окруженных средним слоем из более мягкого материала, чем внутренняя труба, и наружную трубу, заключающую в себя средний слой, окружающий одну или более внутренних труб. Внутренняя труба имеет кольцевую жесткость выше, чем кольцевая жесткость среднего слоя, а сжатие стенки среднего слоя составляет по меньшей мере 1,5% от внутреннего диаметра трубы. Сжатый газ вводят в полимерный материал в зоне пластицирования шнека для среднего слоя в точке, где полимерный материал является, по существу, уже расплавленным, а газ смешивают с полимерным материалом и экструдируют в полость, образованную внутренней трубой (трубами) и наружной трубой. Калибровочное устройство, которое калибрует наружную и внутреннюю поверхности многослойной трубы одновременно, монтируется так близко к соплу формующего инструмента, что часть вспенивания обеспечивается в калибровочном ...

СПОСОБЫ И СИСТЕМЫ ОПЕРАТИВНОГО КОНТРОЛЯ ФУНКЦИОНАЛЬНОГО СЛОЯ ПЛЕНКИ, СОДЕРЖАЩЕГО ПОДДАЮЩИЙСЯ ОБНАРУЖЕНИЮ КОМПОНЕНТ

Изобретение относится к способу оценки непрерывности функционального слоя полотна. Техническим результатом является повышение скорости и эффективности проверки нарушений непрерывности слоев пленки без прерывания процесса изготовления пленки и без разрушения какой-либо ее части. Технический результат достигается способом оценки непрерывности функционального слоя полотна, который включает формирование полотна посредством экструзии термопластичного материала через кольцевую матрицу с получением кольцевой ленты, закалку этой ленты и сплющивание в плоскую конфигурацию, из которой впоследствии изготавливают множество пакетов. Продвижение полотна проводится со скоростью 5 метров в минуту. Функциональный слой полотна содержит смесь термопластичной композиции и поддающегося обнаружению компонента, который присутствует в термопластичной композиции на уровне, поддающемся обнаружению в функциональном слое полотна. Обнаружение присутствия функционального слоя и нарушения непрерывности функционального ...

УСТРОЙСТВО ДЛЯ ИЗГОТОВЛЕНИЯ РИФЛЕНЫХ ТРУБ

... 1. Устройство для изготовления рифленых труб, содержащее формовочные полуматрицы (16), установленные с возможностью циркулирующего движения с прилеганием друг к другу вдоль двух направляющих (14) за счет привода посредством соответствующих приводных устройств (30), причем обе направляющие (14) имеют один общий формовочный тракт (18), по одному возвратному тракту (20) и по два огибных тракта (22; 24), причем соответствующий огибной тракт (22; 24) содержит огибной орган (26; 28), который выполнен с дугообразным направляющим краем (54) для формовочных полуматриц (16), установлен на неподвижном основании (38) с возможностью линейного движения и соединен с компенсационным устройством (42), выполненным с возможностью коррекции допустимого отклонения в размерах циркулирующих вдоль соответствующей направляющей (14) формовочных полуматриц (16), отличающееся тем, что соответствующий огибной орган (26; 28) состоит из малоизнашивающегося синтетического материала, а допустимое отклонение в размерах ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗГОТОВЛЕНИЯ БЕСШОВНОЙ СЪЕДОБНОЙ ЦЕЛЛЮЛОЗНОЙ ОБОЛОЧКИ

... 1. Способ изготовления бесшовной съедобной целлюлозной оболочки из недериватной целлюлозы, в котором раствор недериватной целлюлозы в третичном амин-N-оксиде, из добавок и воды, экструдируют в виде рукава из кольцевого мундштука и через воздушный зазор направляют вниз в водяную ванну для упрочнения целлюлозы и добавок и удаления амин-N-оксида из целлюлозы, далее целлюлозную оболочку выводят из водяной ванны, отличающийся тем, что целлюлозную оболочку очищают за счет опрыскивания подогретой водой, при этом во время опрыскивания оболочку наклонно транспортируют вверх, затем оболочку пропускают по меньшей мере через два промывочных участка и один участок пластификации, и после выхода с участка пластификации в виде мокрой оболочки в уплощенном состоянии подвергают предварительной сушке, до того как раздутая оболочка высушивается до окончательной влажности. 2. Способ по п.1, отличающийся тем, что целлюлозную оболочку высушивают до влажности от 30 до 70% влажности мокрой оболочки. 3. Способ по ...

МНОГОСЛОЙНЫЕ ПЛЕНКИ

... 1. Многослойная пленка, содержащая термопластичный полимер, где указанная пленка имеет общую толщину от примерно 10 до примерно 50 мкм, и где указанная пленка содержит от примерно 6 до примерно 2000 слоев. ! 2. Многослойная пленка по п.1, где указанная пленка имеет общую толщину от примерно 17 до примерно 30 мкм. ! 3. Многослойная пленка по п.1, где многослойная пленка содержит от примерно 10 до примерно 100 слоев. ! 4. Многослойная пленка по п.1, в которой каждый слой содержит одинаковый термопластичный полимер или смесь полимеров. ! 5. Многослойная пленка по п.1, в которой каждый слой содержит полимер, выбранный из группы, состоящей из полиолефинов, полистирола, сложных полиэфиров, поликарбонатов, полиамидов и их комбинаций. ! 6. Многослойная пленка по п.1, в которой каждый слой содержит полимер, выбранный из группы, состоящей из полиэтилена, полипропилена, полибутадиена, линейного полиэтилена низкой плотности, линейного полиэтилена средней плотности, интерполимера полипропилен-этилен ...

СПОСОБ ИЗГОТОВЛЕНИЯ ЯЧЕИСТОЙ СТРУКТУРЫ НА ПЛАСТИКОВОЙ ОСНОВЕ

... 1. Способ изготовления ячеистой структуры на пластиковой основе, включающий: ! стадию (a), во время которой параллельные тонкие пластины композиции на основе по меньшей мере одного термопластичного полимера (Р), выбранного из аморфных и полукристалличных полимеров, непрерывно экструдируют через головку, содержащую множество параллельных щелей; ! стадию (b), во время которой на выходе из головки экструдера и в перемежающейся последовательности промежутки между смежными тонкими пластинами подвергают нагнетанию текучей среды (f) и вакуумированию, причем две стороны одной и той же тонкой пластины подвергаются, с одной стороны, воздействию текучей среды (f) и, с другой стороны, воздействию вакуума, и наоборот во время следующей перемены для того, чтобы создать деформацию пластин и спаять их попарно с образованием в плоскости приблизительно параллельно направлению экструзии ячеистой структуры, чьи составляющие ячейки расширены перпендикулярно направлению экструзии; ! стадия (c), во время которой ...

МИКРОПОРИСТАЯ ПОЛИЭТИЛЕНОВАЯ МЕМБРАНА, СПОСОБ ЕЕ ПОЛУЧЕНИЯ И РАЗДЕЛИТЕЛЬ БАТАРЕИ

... 1. Полиэтиленовая микропористая мембрана, выполненная из полиэтиленовой смолы, содержащей 15 мас.% или менее полиэтилена сверхвысокой молекулярной массы со среднемассовой молекулярной массой 1·106 или более, которая состоит из слоя плотной структуры со средним диаметром пор 0,01-0,05 мкм и слоя грубозернистой структуры, сформированного, по меньшей мере, на одной поверхности, со средним диаметром пор слоя грубозернистой структуры в 1,2-5,0 раз больше, чем в слое плотной структуры. ! 2. Полиэтиленовая микропористая мембрана по п.1, в которой полиэтиленовая смола состоит из полиэтилена сверхвысокой молекулярной массы и полиэтилена высокой плотности. ! 3. Полиэтиленовая микропористая мембрана по п.1, в которой отношение толщины слоя грубозернистой структуры к слою плотной структуры составляет 5/1-1/10. ! 4. Способ получения полиэтиленовой микропористой мембраны, включающий стадию экструзии расплава смеси полиэтиленовой смолы, содержащей 15 мас.% или менее полиэтилена сверхвысокой молекулярной ...

СОПОЛИМЕРЫ И ПЛЕНКИ НА ИХ ОСНОВЕ

... 1. Сополимер этилена и альфа-олефина, содержащего от 7 до 12 атомов углерода, имеющий следующие свойства:(а) плотность (D) в интервале от 0,900 до 0,940 г/см;(б) индекс расплава MI(2,16 кг, 190°С) в интервале от 0,01 до 50 г/10 мин;(в) модуль упругости расплава G' (G"=500 Па) в интервале от 20 до 150 Па; и(г) прочность на разрыв в продольном направлении (MD), которая ≥220 г,прочность на разрыв в поперечном направлении ((TD), которая ≥470 г,ударная прочность при испытании падающим заостренным предметом (DDI), которая ≥1800 г,свойства определены для выдувной пленки толщиной 25 мкм, полученной из данного сополимера, причем MD представляет собой продольное направление, а TD представляет собой поперечное направление выдувной пленки.2. Сополимер этилена и альфа-олефина, содержащего от 7 до 12 атомов углерода, имеющий следующие свойства:(а) плотность (D) в интервале от 0,900 до 0,940 г/см;(б) индекс расплава MI(2,16 кг, 190°С) в интервале от 0,01 до 50 г/10 мин;(в) прочность на разрыв в поперечном ...

ПЛЕНКИ, ОРИЕНТИРОВАННЫЕ В МАШИННОМ НАПРАВЛЕНИИ, СОДЕРЖАЩИЕ МУЛЬТИМОДАЛЬНЫЙ СОПОЛИМЕР ЭТИЛЕНА И ПО МЕНЬШЕЙ МЕРЕ ДВУХ АЛЬФА-ОЛЕФИНОВЫХ СОМОНОМЕРОВ

СПОСОБЫ ПРОИЗВОДСТВА ВОДНОЙ ЭМУЛЬСИИ, ТОНКОДИСПЕРСНОГО ПОРОШКА И РАСТЯНУТОГО ПОРИСТОГО ТЕЛА ИЗ МОДИФИЦИРОВАННОГО ПОЛИТЕТРАФТОРЭТИЛЕНА

МНОГОСЛОЙНЫЕ СТРУКТУРЫ, ИМЕЮЩИЕ КОЛЬЦЕОБРАЗНЫЕ ПРОФИЛИ, И СПОСОБЫ, И УСТРОЙСТВО ДЛЯ ИХ ПОЛУЧЕНИЯ

... 1. Способ получения кольцеобразной многослойной структуры, включающий стадии, на которых:создают поток с многослойным течением термопластических смолообразных материалов, причем поток с многослойным течением включает микрослоистую часть, имеющую по меньшей мере 30 слоев, и по меньшей мере один дополнительный слой на первой и второй стороне микрослоистой части, при этом микрослоистая часть имеет микрослоистую структуру;подают поток с многослойным течением в единичный распределительный канал-коллектор кольцеобразной фильеры;разделяют поток с многослойным течением по меньшей мере на два потока текучей среды, в котором по меньшей мере два потока текучей среды перемещаются в противоположных направлениях вокруг периметра распределительного канала-коллектора с образованием кольцеобразного потока с многослойным течением, один конец одного из потоков текучей среды перекрывается с одним концом еще одного потока текучей среды в области перекрывания, при этом микрослоистая структура сохраняется в области ...

ГОЛОВКА ДЛЯ ЭКСТРУЗИИ РУКАВОВ С ТРЕХФУНКЦИОННЫМ КОНСТРУКТИВНЫМ ЭЛЕМЕНТОМ И СПОСОБ ВЫПУСКАНИЯ РУКАВА ИЗ РАСПЛАВА

МОНОВОЛОКНА ИСКУССТВЕННОГО ДЕРНА И СПОСОБЫ ИХ ПРОИЗВОДСТВА

ТЕРМОУСАДОЧНАЯ ПЛЕНКА ДЛЯ ЭТИКЕТОК С НИЗКИМ УДЕЛЬНЫМ ВЕСОМ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

... 1. Термоусадочная пленка для этикеток, включающая слой пенопласта 10, содержащий полистирол в качестве основного компонента, и пару невспененных слоев 20, прикрепленных плавлением к обеим сторонам слоя 10, где последний 10 и пара невспененных слоев 20 соединены в слоистую структуру путем коэкструзии с получением пленки, имеющей удельный вес ниже 1,0.2. Термоусадочная пленка по п. 1, в которой толщина слоя пенопласта 10 составляет от 60 до 90% общей толщины пленки, а толщина каждого невспененного слоя 20 составляет от 5 до 20% общей толщины пленки.3. Термоусадочная пленка по п. 1, в которой коэффициент вспенивания слоя пенопласта 10 составляет от 5 до 20%.4. Термоусадочная пленка по любому из пп. 1-3, где пленка имеет толщину от 30 до 60 мкм.5. Термоусадочная пленка по п. 4, в которой слой пенопласта 10 содержит от 30 до 95% по весу сополимера стирола и бутадиена и от 5 до 70% по весу полистирола общего назначения, а невспененные слои 20 содержат от 30 до 95% по весу сополимера стирола и ...

СПОСОБ И ОБОРУДОВАНИЕ ДЛЯ ИЗГОТОВЛЕНИЯ ПЛАСТИКОВОЙ ПОЛОЙ ДЕТАЛИ ИЗ ДВУХ ЛИСТОВ

... 1. Способ изготовления пластиковой полой детали путем формования двух листов расплавленного пластика в форме, содержащей две полости, содержащий следующие этапы:a) два расплавленных пластиковых листа изготавливают путем экструзии по меньшей мере одного потока расплавленного пластика и его поперечного разрезания;b) эти листы вводят между полостями формы;c) форму закрывают, и полую деталь изготавливают так, что два листа соответствуют полостям формы;d) полую деталь, полученную таким образом, удаляют из формы;e) все операции a)-d) повторяют для изготовления другой полой детали из двух новых листов,отличающийся тем, что перед, во время и после операции поперечного разрезания нижний участок двух новых листов охлаждают с использованием конкретного устройство охлаждения, которое обеспечивает локальное охлаждение листов на упомянутом нижнем участке.2. Способ по п.1, отличающийся тем, что листы получают путем продольного разрезания заготовки, имеющей переменную толщину.3. Способ по п.1, отличающийся ...

СПОСОБ ПОЛУЧЕНИЯ ИСКУССТВЕННОЙ ОБОЛОЧКИ ДЛЯ НАПОЛНЕНИЯ ПИЩЕВЫМИ ПРОДУКТАМИ И ИСКУССТВЕННАЯ ОБОЛОЧКА, ПОЛУЧЕННАЯ УКАЗАННЫМ СПОСОБОМ

... 1. Способ получения искусственной оболочки для наполнения пищевыми продуктами, содержащий:- стадию а), включающую получение экструдируемого геля, содержащего фиброузную коллагеновую дисперсию, отличающийся тем, что содержит:- стадию b), включающую установку экструзионной головки (3), содержащей выходное отверстие (1) для выпуска экструдированного материала, имеющее замкнутую и некруговую геометрическую форму, и- стадию с), включающую выдавливание экструдируемого геля, полученного в стадии а), через выходное отверстие (1), установленное в стадии b), с получением полой трубчатой пленки (2) с поддержанием при этом давления внутри трубчатой пленки (2) больше давления снаружи ее (2).2. Способ по п.1, отличающийся тем, что стадия с) включает с себя впрыскивание сжатой текучей среды с достаточным давлением в пленку (2) так, чтобы трубчатая пленка (2) приняла практически цилиндрическую форму.3. Способ по п.1, отличающийся тем, что выходное отверстие (1) для выхода экструдированного материала имеет ...

ОТДЕЛОЧНАЯ ПАНЕЛЬ

... 1. Отделочная панель (1, 25) с цельной экструдированной опорной пластиной (2) толщиной Т, изготовленной из достаточно твердого и, по меньшей мере, частично вторичного синтетического пластического материала и содержащей плоскую и ровную верхнюю поверхность (3), нижнюю поверхность (18) и пару противоположных сторон (4, 5; 34, 35), имеющих ответные фасонные края в виде охватываемого фасонного края (6, 26; 36) на одной стороне (4) и охватывающего фасонного края (7, 27; 37) на противоположной стороне (5) этой пары; при этом охватываемый фасонный край (6, 26; 36) панели (1, 25) выполнен с возможностью соединения посредством зажимания или крепления с охватывающим краем (7, 37) такой же смежной отделочной панели (8, 28) в направлении D, перпендикулярном верхней поверхности; а в нижних поверхностях (18) имеется ряд выемок (19) в форме полосы, которые продолжаются в направлении экструзии и которые в этом месте расположены попеременно с рядом опорных полос (20), по меньшей мере, часть (46) которых ...

ПОЛАЯ ВОЛОКОННАЯ МЕМБРАНА, ВКЛЮЧАЮЩАЯ ПОЛИИМИД И ПРОЦЕСС ЕЕ ИЗГОТОВЛЕНИЯ

Изобретение касается асимметричных полых волоконных разделительных мембран на основе полимера полиимида. Мембраны получают сухо-мокрым формованием полого волокна из 15 - 25%-ного раствора высокополярного полимера полиимида с использованием осаждающего раствора в просветах.

Blasenformende und stabilisierende Vorrichtung zum Gebrauch im kontinuierlichen Extrusionsverfahren zur Herstellung von Blasfolien.

VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN EINES BIAXIAL ORIENTIERTEN ROHRES AUS THERMOPLASTISCHEM KUNSTSTOFF

LICHTABDECKUNG, INSBESONDERE PLATTEN- ODER SCHALENFOERMIGE LEUCHTENABDECKUNG

Verfahren zum UEberziehen von orientierten stereoregulaeren Polypropylenfolien

Kunststoffumreifungsband sowie Verfahren zur Herstellung von Kunststoffumreifungsbändern

Die Erfindung betrifft ein Kunststoffumreifungsband sowie ein Verfahren zur Herstellung eines Kunststoffumreifungsbandes. Das Kunststoffumreifungsband weist eine teilkristallines, thermoplastisches Kunststoffmaterial auf, welches im Zuge des Verfahrens monoaxial bzw. vorwiegend monoaxial verstreckt wurde. Zumindest eine Bandoberfläche des Kunststoffumreifungsbandes ist mit einer Mikrostruktur, insbesondere mit einer mit dem menschlichen Auge optisch nicht auflösbaren Mikrostruktur versehen.

KUNSTSTOFFVERARBEITUNGSANLAGE

Die vorliegende Erfindung ermöglicht die Nutzung der Prozessabwärme einer Kunststoffverarbeitungsanlage zur Kühlung der Kunststoffverarbeitungsanlage oder der mit ihr hergestellten Produkte und/oder Halbzeuge.Dadurch kann die energetische Effizienz der Kunststoffverarbeitungsanlage verbessert werden, die Produktionskosten für Produkte und Halbzeuge aus Kunststoff gesenkt werden und die Umwelt entlastet werden.

METHOD OF PRODUCING BIAXIALLY ORIENTED FILM OF THERMOPLASTIC RESIN AND APPARATUS THEREFOR

Verfahren zur Herstellung eines Schlauches mit geringer Permeabilität

Abzugsvorrichtung für Schlauchbahnen aus Kunststofffolie

Prozess zum Herstellen eines Kraftstoffbehälters

Prozess zum Herstellen eines Kunststoffkraftstoffbehälters, der mit einer Komponente ausgestattet ist, durch Formen eines Vorformlings mittels einer Form, die zwei Kavitäten und einen Kern enthält, wobei der Prozess die folgenden Schritte enthält: A) Einführen eines Vorformlings in die Formkavitäten; B) Einführen eines Kerns in das Innere des Vorformlings, wobei der Kern zuerst mit einer Komponente versehen worden ist; C) Schließen der Form derart, dass die Kavitäten in lecksicheren Kontakt mit dem Kern kommen; D) Drücken des Vorformlings gegen die Kavitäten durch Blasen durch den Kern und/oder Herstellen eines Vakuums hinter den Kavitäten; E) Installieren der Komponente an der Innenwand des Vorformlings mittels einer am Kern angebrachten Vorrichtung; F) Öffnen der Form, um den Kern herauszunehmen; und G) endgültiges Formen des Vorformlings durch Blasformen und/oder Thermoformen; wobei der Prozess dadurch gekennzeichnet ist, dass der Schritt B das Montieren der Komponente um eine Nadel.

Verfahren zum Herstellen von fuer die Weiter-verarbeitung zu Beuteln mit Schnurzug bestimmten Folien

VORRICHTUNG ZUM KONTINUIERLICHEN VERBINDEN EINER KUNSTSTOFFOLIE MIT EINEM TRAEGER

Verfahren und Vorrichtung zur Herstellung von Schlauchfolien aus Thermoplasten

Flattened tubular thermoplastic film - from tube extruded in multi-layered manner in zones of subsequently-formed edge folds

Tubular thermoplastic film is produced by blowing out an extruded tube, and flattering the resulting tube with two edge folds. In the region of the edge folds the tube is extruded in a multi-layered esp. two-layered manner, with retention of its wall thickness. Pref. a mandrel-like piece is arranged in the annular gap of the extrusion die in the region of the edge folds and the die is constructed zonally as a multi-layer die. The piece passenes borings or channels for supplying and sucking out compressed air, the channels discharging into the space between the layers.

VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN EINER FOLIE MIT KÖRNIGEM MATERIAL DARIN

Folienblaskopf für die Herstellung von Schlauchfolien

Folienblaskopf (1) zur Herstellung von Ein- oder Mehrschichtschlauchfolien aus thermoplastischem Kunststoff, umfassend – eine Schmelzezuführeinrichtung (13), – mehrere konzentrisch um die Mittelachse des Folienblaskopfes (1) angeordnete, ringspaltförmige Schmelzekanäle (9, 10, 11) mit an deren Begrenzungswandung angeordneten Wendelverteilern (6, 7, 8), – mehrere Primärverteiler, welche die von der Schmelzezuführeinrichtung (13) kommende Schmelze in mehrere Einzelströme aufteilen, die dann in den Anfang der Wendelverteiler (6, 7, 8) münden, – und eine Ringspaltdüse (12) in die die Schmelzekanäle (9, 10, 11) münden, wobei der Wendelverteiler (8) des inneren Schmelzekanals (9) auf der in Bezug auf die Mittelachse des Folienblaskopfes innenliegenden Begrenzungswandung angebracht ist und der Wendelverteiler (6) des äußeren Schmelzekanals (11) auf der in Bezug auf die Mittelachse des Folienblaskopfes außenliegenden Begrenzungswandung angeordnet ist.

Spreizvorrichtung fuer Schlauchfolienblasanlagen

Profilformvorrichtung zum Verformen eines aus einer Duese einer Strangpresse austretenden,noch plastischen,hohlen Kunststoffstranges

VERFAHREN ZUR HERSTELLUNG VON FUER ELEKTRISCHE EINRICHTUNGEN GEEIGNETEN POLYPROPYLENFOLIEN

Crosslinking blown thermoplastics tube on leaving extruder - esp. by heating before it reaches final diameter

The method consists of extruding tubular sheet through an annular die, inflating the tube to expand it to a larger dia. and keeping the tube closed at a certain distance from the die. The tube is cross-linked in a zone within the inflating region, before the tube dia. has been fully expanded to its max. value. Pref. the tube, after passing through the inflating and cross-linking zone, immediately enters a stretching zone in which it is expanded to its final dia. using the same internal pressure. The die may be a double-ring die which simultaneously expels and internal layer of adhesive to coat the inside of the tube before the cross-linking operation. The process is for the prodn. of any plastics cross-linked tube by the blowing process e.g. PVC or polyethylene.

VERFAHREN UND FERTIGUNGSSTRASSE ZUR KONTINUIERLICHEN HERSTELLUNG VON BIAXIAL-GERECKTEN KUNSTSTOFFROHREN

PULL-OFF DEVICE FOR TUBULAR PLASTIC FILMS

Film-blowing machine, producing film tubing from an extruder with stationary blowing head, has a draw-off arrangement whereby the tubing is laid flat in an arrangement which oscillates about a vertical axis and has traction rollers with horizontal axes. At least two diverter rods with horizontal axes are positioned between that arrangement and a stationary reeling point; these rods can turn relative to the arrangement concerned. The first rod swivels about a vertical axis at a distance from the vertical axis of the blowing machine itself, and the rod axis plus the oscillating arrangement turn about the vertical axis of the machine. The second rod also turns about a vettical axis at a distance from the main machine axis; the final film tubing passes from this second rod to its reel-up in a plane which is parallel to the plane through the main machine axis and the vertical axis of the second rod.

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON IN ZWEI RICHTUNGEN IN KONTROLLIERTEM MASS AUF WAERME SCHRUMPFENDEN VERNETZTEN SCHLAEUCHEN

WEISSE SCHICHT FÜR REFLEKTOREN FÜR OBERFLÄCHENLICHTQUELLEN

VERFAHREN FÜR DIE VORBEREITUNG VON OPTISCHEN THERMOPLASTICHEN URETHANHARZ-LINSEN

Verfahren und Blasdüse zum Entfernen der Späne von Alveolarplatten

Continuously extruding plastics sandwich sheet - with calibration surfaces between extrusion nozzle and pulling device to accurately maintain sheet thickness

An apparatus for continuously making composite plastics material constituted of two facing sheets with a foam layer sandwiched between them, comprises a three-layer annular extrusion head, from which the composite material is expelled, and a draw-off device. Between the extrusion head and the draw-off device, an annular calibration gap is incorporated, constituted of an inner surface and outer surface, the former pref. being formed of a central mandrel, while the latter is pref. formed of an inflatable tube of silicone rubber fitted to the inner side of an annular box surrounding the passage of the tube and supplied from a compressed fluid system.

VERFAHREN ZUR HERSTELLUNG VON POLYPROPYLEN-HOHLKOERPERN

Verfahren und Vorrichtung zur Dickenprofilregelung

Verfahren zur Regelung des Foliendickenprofils von in Folienblasanlagen hergestellten ein- oder mehrschichtigen Schlauchfolien durch Erfassen des Dickenprofils des Folienschlauches, anschließendem Vergleich des erfassten Istprofils mit den vorgegebenen Sollprofilen zur Erzeugung einer Regelgröße zum Beeinflussen des Dickenprofils des herzustellenden Folienschlauchs, dadurch gekennzeichnet, dass die Regelung zur Erzeugung der Regelgröße eine kaskadierte Regelung aus einer Überlagerung folgender Profile umfasst: ein Grundprofil, welches die Dicke der extrudierten Schlauchfolie über den Schlauchfolienumfang auf ein vorgegebenes Dickensollprofil mittels eines Foliendickenprofilregelsystems regelt, ein Rollenprofil, welches aus dem Dickenistprofil die Foliendicke über die Wickelbreite summatorisch über die Länge des Schlauchs hochrechnet und bei Entstehen von Kolbenringen auf dem Wickel ein Regeleingriff vorgenommen wird, sodass die Solldickenverlagerung über die Folienbreite angepasst wird, ...

Verfahren zur Herstellung von Kunststoffstäben

Die Erfindung betrifft ein Verfahren zur Extrusion von Rundstäben aus transparenten Kunststoffen wie beispielsweise Polymethylmethacrylat (PMMA), Polycarbonat (PC) oder (PET) Polyethylen und eine Vorrichtung zur Herstellung der Rundstäbe.

Cooling device for film in blown film system, has discharging unit discharging cooling fluid and exerting suction force on cooling force, and longitudinal distribution unit provided for distributing suction force on film

The device has feeding units feeding cooling fluid on a film, and a discharging unit discharging the cooling fluid. The discharging unit exerts suction force on cooling force. A longitudinal distribution unit is provided for distributing the suction force on the film, and is provided with a fluid outlet on the feeding units. The feeding units include a cooling ring, and a sealing unit is provided in a region between the feeding units. The discharging unit is operatively arranged on the feeding units, where distance between the feeding units is adjusted.

Improvements in or relating to the manufacture of plastic tubes

... 978,203. Tubes and films ; moulding thermoplastic material. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 10, 1963 [Dec. 3, 1962], No. 45467/62. Addition to 787,479. Headings B5A and B5B. In the production of tubular films by inflation, the tube of thermoplastic material is passed between a pair of substantially parallel nip rollers 9 spaced apart to such an extent that the tube is flattened between them, and encircles a stationary probe 15 (Fig. 2), located at the side of and outside the line of the nip, so that creasing of the tube at the edge is prevented. As shown, two such probes 15, 16 of substantially pear-shaped cross-section may be used, or alternatively only one probe may be used, the other edge of the tube passing through the nip. In Fig. 4, one edge only of the tube is internally supported on the stationary probe 25, the other edge 26 projecting outside the nip by an amount which permits a substantially gas-tight seal. to be maintained between the portions of the tube before and after ...

IMPROVEMENTS IN OR RELATING TO APPARATUS FOR MAKING POLYMERIC ARTICLES

... 1,216,527. Cooling extruded articles. FMC CORP. 9 Aug., 1968 [31 Oct., 1967], No. 38178/68. Heading B5A. The apparatus described in Specification 1,075,565 for cooling polymeric, rectangular cross-sectioned extrudate 16 is modified by replacing a smooth continuous arcuate surface over which the extrudate slides by transversely extending tubes 26, 28, 30 &c. about which the extrudate is laced. Tubes 26, 28, 30 &c. are open-ended and extend between vertical walls (42), Fig. 2 (not shown), and 44 fixed to, but spaced from, the adjacent vertical walls of tank 18. The water in tank 18 is thereby enabled to flow through the tubes. The number of tubes employed is proportional to the thickness of the extrudate.

THE HEAT STABILISATION OF ORIENTED THERMOPLASTIC FILMS

... 1,248,171. Heat treatment of tubular film. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 Dec., 1969 [3 Jan., 1969], No. 479/69. Heading B5B. A process for the heat stabilization of tubular films of oriented thermoplastic materials comprises feeding such a tubular film filled with gas under pressure through a zone where it is heated to the required heat setting temperature gas being supplied under pressure to the outside of the tube to prevent any undesirable expansion of the tube. As shown, film is extruded from an annular extrusion die 2, to form a tubular film 1, and is cooled by passing over a mandrel 3, and/or through a cooling bath 4. The tube is drawn off by nip rolls 7, whose width is narrower than the collapsed tube, and which are rotating at a greater rate than the extrusion rate, thus forming an air tight seal on the mandrel 3, and preventing the inflation pressure from rupturing the tube at its point of extrusion. The tube is then heated to its orientation temperature by circular infra-red ...

PROCESS AND APPARATUS FOR CONTROLLING DIMENSIONS IN PLASTICS EXTRUSIONS

... 1372501 Controlling thickness of foamed plastics extrusions OWENS-ILLINOIS Inc 3 Oct 1972 45551/72 Heading B5A [Also in Division G3] In the production of a foamed thermoplastics sheet, e.g. of polystyrene, by extrusion either from a flat sheet die or, as in the described embodiment, by extrusion of a tube 30 which is slit by knives 34 at diametrically opposed locations 31, uniformity of thickness of the sheet transversely of its direction of advancement from the die is obtained by measuring the thickness at a number of locations spaced transversely across the advancing sheet, and either manually or automatically raising or lowering the temperature of the die lips, in areas forming the regions of the sheet at which the thickness are measured, respectively to increase or decrease the thickness of the sheet at the locations. The temperatures are controlled by a plurality of independently controlled heating and/or cooling heat exchangers circumferentially spaced around at least one die lip, ...

TRANSVERSELY RIBBED FILMS

... 1379381 Sheet forming; extrusion LA CELLOPHANE 26 Nov 1971 [27 Nov 1970] 22913/74 Divided out of 1379045 Headings B5A and B5B A method of strengthening a film of extruded thermoplastic material, e.g. polyolefin, polyethylene, polypropylene or P.V.C., comprises blow extruding the material in the form of a sleeve, and downstream of the extrusion die forming ribs helically around the sleeve by extruding thermoplastic material from at least one additional extrusion nozzle rotating around the sleeve during the blow extrusion. The additional nozzle is located sufficiently close to the extrusion die, for the extrudate to be soft at the point of application of the ribs.

PRODUCTION OF FILMS OF UNIFORM THICKNESS

... 1390226 Films of uniform thickness CELANESE CORP 15 June 1972 [28 June 1971] 27977/72 Heading B5B Biaxially drawn film of substantially uniform thickness across its width is made by extruding a molten thermoplastic through a die 12 to obtain a film 21 and biaxially drawing the film at 15, 16, while supplying heat along the die orifice by a plurality of contiguous heaters 13, each occupying not more than three inches of the die orifice length, and controlling the heat supplied by each heater by the magnitude of the signal generated by a thickness gauge operating at a corresponding point on the biaxially drawn film to maintain substantilly uniform the thickness of the biaxially stretched film at points across the width thereof corresponding to the heaters. As shown, the heat supplied by each heater is controlled by the magnitude of the signal generated by a traversing beta ray thickness gauge 17 operating at a corresponding point on the biaxially drawn film. The output of gauge 17 is transmitted ...

BLOWN TUBE PRODUCTION

... 1396749 Non-crystalline films; extruded tubular film LECO INDUSTRIES Ltd 21 Aug 1972 38782/72 Headings B5B and B5A Tubular film is extruded and inflated from conventional die 14 and cooled in a three-stage process. In the first stage the tube is cooled to a temperature at which crystallites are formed. This is accomplished by means of air-ring A, the cooling air being supplied by conduit 49 and playing on to the film through aperture 48. In the second stage, the film is annealed for a time sufficient to permit amorphous areas to form. This occurs in a dwell chamber C comprising housing 52 and a conduit 54 connected to a vacuum source. In the third stage the film is cooled by airring B, of similar construction to A, so that it solidifies without the formation of crystals. The resulting film, which is preferably of polyethylene, has crystallites dispersed throughout amorphous areas and is stated to have a high gloss and low haze (high transparency) in addition to improved tensile strength ...

Simultaneous plasticization and compatibilization process and compositions

Method and Means for Extrusion of Plastics Tubes for Subsequent Forming by Blowing or Vacuum

... 1,180,295. Stretching and blowing tubes. GRUBERNES SPRAENGSTOFFABRIKER A/S. 28 March, 1967, No. 14049/67. Heading B5A. Plastics tubes 3, Fig. 2, are extruded horizontally and supported from the extruder by a support member 4 used for expansion in substantially two opposite directions only transverse to the axis of the tube to flatten it. The tube may be subsequently blow-moulded or vacuum-formed in dies 5, 6. In one embodiment, the tube 3 is extruded intermittently, the support member comprising two rods 41, 411, Fig. 4, drawn through the core 2 of the extruder 1 at the same speed as the tube and which diverge to expand the tube, before expansion in the blow-mould halves 5, 6. Alternatively, the support may comprise one support rod, there being an underlying or inserted rod to expand the tube in conjunction with the support rod. Adhesion is prevented by cooling the rods.

Plastics pipe

Improvements in the manufacture of patterned thermoplastic strip material

... 722,507. Extruding thermoplastic strip material. DURATUBE & WIRE, Ltd. April 29, 1952 [Jan. 30, 1951], No. 2272/52. Class 87 (2) Patterned thermoplastic strip material having undulations extending in the direction of the thickness of the strip, as shown at 15 in Fig. 4, is made by extruding the hot material through an undivided nozzle, e.g. the nozzle shown in Fig. 2, or a nozzle having a plurality of adjacent orifices. If the nozzle is undivided, at least one passage portion thereof offers a greater resistance to flow of the material than does the passage portion or portions adjacent thereto and is symmetrically disposed in relation to the median plane of the adjacent portion or portions, e.g. as shown in Fig. 2, where the portions 14 of the nozzle offer greater resistance than the adjacent portions 13; in another form. the nozzle has a uniform width at its exit side but tapers internally to. have a greater width at those portions of its entrance side where it is required to offer least ...

IMPROVEMENTS IN METHODS FOR INSTALLING A SUBSTANTIALLY RIGID THERMOPLASTIC PIPEIN AN EXISTING CONDUIT

IMPROVEMENTS IN METHODS AND APPARATUS FOR REPAIRING AN EXISTING UNDERGROUND CONDUIT

"Apparatus for and method of Insulating Pipes"

A dispenser for liquid foam which rapidly expands and hardens on exposure to air has a shaped head (21, 27, 28) to fit laterally over a pipe (P, P<1>) and to be moved along it. The foam issues into this head and is guided by it into an insulating jacket around the pipe. There are means (216) for locating the head correctly with respect to the pipe and means (31) for allowing the head to negotiate pipe joints and supports. The head may be interchangeable with others to cater for different pipe sizes, and each head may swivel with respect to the rest of the dispenser for ease of application. The foam feed may be automated to suit the pipe size and speed of traverse. ...

IMPROVED PROCESS AND APPARATUS FOR THE PRODUCTION OF BI-ORIENTATED THERMO-SHRINKING HOSE

Composting bin

A composting container comprises a frusto-conical hollow body (10) whose wall has spaced radially outwardly protruding wail portions (1) parallel to one another and to a first end of the body which, in use, will be in contact with the ground. At or near said end of the body is at least one aperture (11) covered by a movable, annular, frusto-conical cover (3). The body wall also has circumferentially spaced, axially extending, radially outwardly protruding ribs (2) which are divided into separate axially aligned portions by said protruding wall portions. There is a lid (13) for closing its second (open) end through which compostable material will be loaded. Access to the aperture(s) (11) and compost may be obtained (a) by lifting the cover (3), or (b) by sliding the cover (3) about the vertical axis of the body (10) to bring an aperture (20) in the cover (3) into register with the aperture in the body. ...

Plastics pipe

Continuous process for producing a non-woven fabric from filaments stretched by calendering

A process of producing a non-woven fabric comprises the steps of extruding a fiber forming resin through a spinneret 4 to form filaments 91, passing the filaments 91 through a cooling device 52, passing the filaments 91 through a set of first rollers 511, passing the filaments 91 through a heating device 53, stretching the filaments 91 bypassing the filaments 91 through a set of second rollers 512, which operates at a speed greater than that of the first rollers 511, and forming the filaments 91 into the non-woven fabric 9 on a conveyor screen belt 8 which advances in a longitudinal direction. After stretching the filaments may be drawn by a drawing air jet device. An apparatus for performing the process is also disclosed.

FREE FLOW INTERLOCKING PACKING MATERIAL OF LOW BULK DENSITY

... 1312486 Moulding cellular articles FREEFLOW PACKAGING CORP 8 April 1970 [11 April 1969] 16617/70 Heading B5A [Also in Divisions B8 and C3] An interlocking free flow packing material is made by heating a plastics material together with foaming and nucleating agents to form a heat softened extrusion mass which is extruded, e.g. by being continuously fed to an extrusion zone and heating the extrusion mass, to form the heat-softened tube, the tube is subject to cooling, e.g. in an ambient atmosphere, to a hardened stage, the extruded tube is then longitudinally stretched, e.g. by being continuously frictionally engaged to pull the same away from the extrusion zone to thereby stretch and to maintain the freshly extruded material in a desired hollow tube configuration, such longitudinal stretching serving to longitudinally orient gas cells formed in the walls of the tube during the extruding, the hardened tube is continuously sliced to form at least two adjacent substantially hollow annular tube ...

METHOD OF APPLYING A PLASTICS PROTECTOR ONTO A GLASS CONTAINER

... 1403401 Strengthening glassware OWENS ILLINOIS Inc 30 June 1972 [30 June 1971 30659/72 Heading C1M [Also in Divisions B5 B8 and F2] Glass bottles B are provided with shrunk-on plastics sleeves 69 by winding blanks 69a of thermoplastics material biaxially orientated in lengthwise and widthwise directions M and T on mandrels 66 of a rotating turret, heat-seaming the overlapped ends of each respective wound blank by turret-mounted, radially-movable electrical resistance-heated seams 75, to form sleeves 69, ejecting the formed sleeves upwardly from the mandrels by cam-operated strippers 70 on to bottles, which are moved in synchronism with the turret into overlying registry with the mandrels by bottle-carrying chucks 54 mounted on an endless chain 53, and shrinking the sleeves on to the bottles by passing the sleeved bottles through an oven 77. The chucks 54 each have a centre spindle provided with a roller 63 running in a cam track 64, which has depressed portions 64a and 64d, Figs. 12 (not ...

Improvements in and relating to thermoplastic films

... 1,106,994. Tubular films. BAKELITE XYLONITE Ltd. 5 July, 1965 [6 July. 1964], No. 27715/64. Heading B5B. In apparatus for extruding a tube of thermoplastic material comprising an extrusion die, means for supplying an inflation pressure, and means for hauling off the tube after inflation while maintaining an inflation pressure within the tube, there are provided means associated with the die for preventing an inflation pressure from rupturing the extruding tube, and a pair of nip rolls for drawing off the tube from the die lips, constructed so that they flatten the tube across only a part of its width so that two opposed portions of the tube are brought into contact with one another in the nip, without forming crease marks in the tube. The ruptureprevention means may be an external solid support, or pressure equalization means, or may be a flexible seal inserted into the tube before the inflation zone and impassible by inflating gas. The extruded tube may be quenched prior to its passage ...

METHOD FOR THE PREPARATION OF ELASTIC INTERCONNECTORS

Forming pipe with memory of reduced form

A substantially rigid thermoplastic pipe, manufactured in a flattened and folded form so as to have a memory in this condition is stored in such form, heated to make it pliable for installation and positioned in an existing pipe. The new pipe is rounded by placing heated fluid in the passages along the folds of the pipe while its leading end is restricted. The leading end may be restricted by an end clamp which enables a hot fluid to pass completely through the pipe and thus heat its full length, or by an inflatable plug. Alternatively, an inflatable plug may be propelled to the leading end of the new pipe after its insertion and then fully inflated to block such end and thereby enable full rounding and expansion of the remainder of the new pipe.

Improvements in methods of and apparatus for formnig tubular films of synthetic thermoplastic organic material

Tubular films of synthetic organic thermoplastic material are produced by extruding the heated material through an annular extrusion orifice to form a tubular film, drawing the film over a hollow mandrel in air-sealing relation therewith and thence over driven haul-off nip rolls to form a first enclosed air space between the mandrel and the die and a second enclosed air space between the rolls and the mandrel, and passing a coolant through the mandrel to cool the film while maintaining air flow between the first and second spaces so that the pressures in them remain approximately equal. As shown in Fig. 1, hot thermoplastic material 12 is forced by the worm 13 from the supply vessel 14 through the chamber 11 of the die 10 and out of the annular die orifice 15 to form a tubular film 16. The tubular film 16 is pulled over a hollow mandrel 17 and spreader arms 30 by driven nip rolls 33, 34 and is wound upon a core 35. The mandrel 17 has rounded shoulders 28 and is suspended ...

Quenched nylon multilayer casings

An exact-fit tubular food casing for pressurized filling comprises a tubular polymeric laminate having an outer layer of crystallized and moisturized nylon and an interior moisture barrier layer. In one advantageous mode, the nylon is heat crystallized from a substantially amorphous state and simultaneously moisturized. Associated method and apparatus for making said casing are also provided. In use, the casing is stuffed to within its elastic limit so that radial deformation is uniform along the length of the tubular casing. As the exposed nylon dries out, the casing shrinks, thus further elastically stretching tightly over the stuffed food roll contained therein.

METHOD AND APPARATUS FOR FABRICATING THERMOPLASTIC CONTAINERS

... 1474621 Infra-red heater OWENS ILLINOIS Inc 24 April 1974 [25 April 1973] 17859/74 Addition to 1389593 Heading H5H [Also in Divisions B4-B5 B8 and F4] In an arrangement for making plastic cups in which a sleeve and a base disc are heat shrunk on to a mandrel, mandrels 141 are passed on a conveyer through a shrink tunnel. The shrink tunnel includes a first pair of infra-red heaters 701a, 701b vertically mounted to heat the upper regions of the sleeve and a second downstream pair of infra-red heaters 702a, 702b which are slightly tilted to account for increase in slope of the lower region of each mandrel. Infra-red heaters 703 are located between the other heaters and below the mandrels. The positions of the heaters are individually adjustable and the heaters are mounted upon a support 771, 772 which can be raised and lowered by a pair of cylinders 974 (only one shown) acting through toggle linkages 791, 792 located between the support and a fixed base 788. The mandrels are rotated by co-operation ...

Apparatus and method for forming a blown film

An apparatus for use in the continuous extrusion of blown films includes a die 16 suitable for forming a blown film bubble, and one or more primary gas outlets 30, 32 for use in stretching and drawing the extruded film prior to it stabilizing. The primary gas outlets direct cooling gas streams on the interior and/or exterior surface of an unstabilized portion of the blown film bubble as it emerges from the die. Secondary cooling gas outlets 20 are also provided to introduce secondary gas streams into an upper stabilized portion of the blown film bubble above the bubble frost line. An exhaust conduit 80 in gaseous communication with an interior of the bubble is used to maintain the gas pressure in the blown film bubble interior at a desired pressure. The exhaust inlet 86 is located at a position adjacent the bubble frost line spaced away from the primary cooling gas outlets and towards the secondary gas outlet. Means 24 are provided for collapsing the blown film bubble.

Improvements in or relating to the manufacture of plastic film

... 941,128. Tubular films. GENERAL ENGINEERING CO. (RADCLIFFE) Ltd. Aug. 30, 1962 [Aug. 30, 1961], No. 31151/61. Heading B5B. Apparatus for forming an extruded tube of a plastic material, e.g. polyethylene, polystyrene or polyvinyl chloride, comprises means for extruding the material as a tubular film having walls of greater thickness than the required finished wall thickness, an expandable former, means for passing said tubular film over said former, and means for providing an air cushion on the outer surface of said former. As shown, a melt is extruded from press 10 at annular nozzle 13 to form a tubular film 24, of greater thickness than the required finished thickness, which passes between the toroidal former 21 and the cooling ring 23 to nip rollers 25. Former 21 is inflatable with air or liquid via pipe 22, or mechanically expansible, but on starting is in the deflated or contracted state. Compressed air is then admitted via 18, 14, 17, and passes between tube 24 and former 21 into the ...

Annular extrusion head

Voided plastics film

A formulation and method for making voided plastics film comprising a polyolefin, a filler and a voiding agent formulation wherein the voiding agent is a glycerol ester of fumaric resin; forming a plastics sheet from the formulation and biaxially-orienting the plastics sheets by stretching to form a voided plastics film. The polyolefin may be high density polyethylene (HDPE) and the filler may be calcium carbonate or titanium dioxide, in the ranges 12-37 and 4-11% by weight of the polyolefin respectively. The glycerol ester of the fumaric resin is in the range 4-18% by weight of the polyolefin. The formulation may also comprise polystyrene in the range 3.5-9% by weight of the polyolefin. The voided plastics film may be co-extruded with at least one skin layer to form a composite plastics film, such as synthetic paper, wherein the voided plastics film forms the core or base layer.

FORMING NON-WOVEN WEBS

Improved method and apparatus for longitudinal orientation of a tubular thermoplastic film in molten or semimolten state

Improvements in or relating to linear organic thermoplastic film manufacture

... 954,254. Producing biaxially oriented films. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 11, 1962 [April 12, 1961 ; Dec. 22, 1961], Nos. 13192/61 and 46038/61. Drawings to Specification. Heading B5B. In the production of biaxially oriented linear organic thermoplastic tubular film by adjusting the temperature of a tube of the unoriented film material to a temperature below its melting point (defined as the temperature at which spherulites disappear using a hot stage polarizing microscope), at which temperature it can be uniformly expanded to biaxially orient it by internal gaseous pressure (with or without any additional stretch in the longitudinal direction), and expanding it and hauling off the resulting tubular film, the film is cooled by circumferentially uniformly applied draughts of air at least on the shoulder of the stretching tube so that a high internal gaseous pressure can be used to expand the tube and the tube is expanded by using a high internal gas pressure. The thermoplastic ...

Fiber-reinforced film processes and films

A blown-film process for making a fiber-reinforced film comprises providing and melting at least one thermoplastic resin. The at least one thermoplastic resin is extruded through an extension die to form a film bubble. A plurality of fibers is introduced inside of the film bubble. The fibers are distributed inside of the film bubble. The film bubble is collapsed after introducing the plurality of fibers so as to form a fiber-reinforced film. The fiber-reinforced film has a first thermoplastic layer, a second thermoplastic layer, and a plurality of fibers dispersed therebetween. The film may be formed in a bag.

Transparent films

The invention relates to an optically transparent polymer film or extrudate product made of a polymer composition comprising a semi-crystalline polyamide having a melting temperature of at least 270° C. or a blend of the semi-crystalline polyamide (A) and a second polymer (B), and optionally at least one additive, wherein the semi-crystalline polyamide (A) is present in an amount of more than 50 wt. %, relative to the total weight of the polymer composition, the polymer composition in the optically transparent polymer film or extrudate product has a melting temperature (Tm-C) in the range of 270-340 ° C., and wherein the film or a part of the extrudate product has a haze of less than 12% and a light transmittance, of at least 88% measured with the method according to ASTM D1003A.

Polyolefin member and method of manufacturing

The invention concerns an improved process for producing high performance polyolefin member. The process comprises the steps of preparing a solution comprising a polyolefin and a solvent, extruding or spinning the solution into an air gap to form a fluid member, cooling the fluid member to form a solvent-containing gel member, and removing at least partly the solvent from the gel member to form a solid member before, during and/or after drawing the member. Furthermore, the process involves the presence of an antifoaming agent comprising an aryl sulphonic acid or an alkyl naphtyl sulphonic acid. The invention further concerns the geltruded polyolefin member comprising aryl sulphonic acid or alkyl naphtyl sulphonic acid.

Supported hollow fiber membrane

A hollow fiber membrane is made by covering a tubular supporting structure with a membrane dope and converting the membrane dope into a solid porous membrane wall. Optionally, a textile reinforcing structure in the form of a circular knit may be added around the supporting structure before it is covered in dope. The reinforcing structure thereby becomes embedded in the membrane wall. The supporting structure may be soluble in a non-solvent of the membrane wall, for example water, and may be removed from the membrane. Alternatively, the supporting structure may be porous. A porous supporting structure may be made by a non-woven textile process, a sintering process within an extrusion machine, or by extruding a polymer mixed with a second component. The second component may be a soluble solid or liquid, a super-critical gas, or a second polymer that does not react with the first polymer.

Microporous membranes, methods for making such membranes, and the use of such membranes as battery separator film

The invention relates to microporous membranes having one or more layers comprising polymer and inorganic molecules. The invention also relates to methods for producing these membranes, and the use of these membranes as battery separator film.

Airbag fabrics woven from slit-film polymeric tapes

Disclosed herein is the preparation of woven fabrics suitable for use in manufacturing vehicle airbags. Such fabrics are woven from a plurality of polymeric, e.g., polyamide, warp and weft tapes which have preferably been slitted, preferably in the machine direction, from a thermoplastic polymer film, and preferably from such a film which has been drawn at least in the machine direction. The resulting fabrics exhibit both the relatively low basis weight, stiffness and small packing volume typical of nylon films, and the relatively high tear strength and high damage tolerance of yarn-based woven airbag fabrics.

Multi-Layer Polymeric Films and Methods of Forming Same

A multi-layer polymeric film having an “A” layer and a “B” layer. The “A” layer includes a first polymer and a first inclusion substantially disposed therein. The first inclusion is a first material that has a higher elastic modulus than the first polymer. The “B” layer includes a second polymer and a second inclusion substantially disposed therein. The second inclusion is a second material that has a higher elastic modulus than the second polymer. Methods of forming a multi-layer film are also provided.

Multilayer blown films for shrink applications

The present invention discloses multilayer blown films for shrink label and related applications. These multilayer blown films can comprise a core layer containing an ethylene polymer, and inner and outer layers containing conjugated diene monovinylarene block copolymers.

Incrementally Stretched Films with Increased Tear Resistance and Methods For Making The Same

Methods of incrementally stretching thermoplastic films in the machine direction include elongating the films in the machine direction without reducing the films' machine-direction tear resistance. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films without reducing the films' machine-direction tear resistance. The methods can involve cold stretching the films and imparting transverse-direction extending linear rib pattern into the film. The linear ribs can have alternating thick and thin gauges. Incrementally stretched thermoplastic films can have a machine-direction tear resistance that is approximately equal to or greater than the machine-direction tear resistance of the film prior to stretching.

Partially reflecting multilayer optical films with reduced color

A multilayer optical film body includes a first and second packet of microlayers. Each packet partially transmits and partially reflects light over an extended wavelength range, such as the visible region, for normally incident light polarized along a first principal axis of the film body. In combination, the first and second packets have an intermediate reflection and transmission (e.g. 5-95% internal transmission, on average) for the normally incident light, and similar intermediate reflection/transmission (e.g. 10-90% internal transmission, on average) for oblique light. The packets are laminated or otherwise connected so that light can pass through the packets sequentially. In at least a first test area of the film body, a high frequency spectral variability of the combination of packets is less than a high frequency spectral variability of the first packet by itself, and may also be less than a high frequency spectral variability of the second packet by itself.

Method of detecting a component of an article and method of preparing a component for detection

A method of detecting the presence or position of a first component in an article is disclosed. The first component, which has a predefined response to incident light, includes a microporous film of a semi-crystalline polyolefin and a beta-nucleating agent. The method includes irradiating the article with incident light, detecting light received from the irradiated article; and identifying the predefined response of the first component in the light received from the irradiated article to detect the presence or the position of the first component. A method for preparing a mechanical fastening component for use in an article is also disclosed. The method includes stretching a film backing containing beta-spherulites and having upstanding fastening elements to provide a microporous film backing with sufficient porosity to allow it to be detected when subjected to an inspection system comprising a light detector.

Balloon catheter tapered shaft having high strength and flexibility and method of making same

Method of making a balloon catheter includes melt-extruding a thermoplastic polymeric material into a tube, cooling the extruded tube, placing the extruded tube within a capture member and biaxially orienting the polymeric material of the extruded tube while simultaneously tapering at least a section of the extruded tube by radially expanding the extruded tube with pressurized media in the tube lumen and axially expanding the extruded tube with an external load applied on at least one end of the tube as an external heat supply traverses longitudinally from a first end to a second end of the extruded tube in the capture member, wherein an overall axial load on the tubing is varied as at least a section of the tube is heated. The method includes cooling the expanded tube to form a tapered biaxially oriented nonporous thermoplastic polymer tubular member and sealingly securing a balloon proximate a distal end of the tubular member.

Polymer blends

The present invention provides, among other things, extruded blends of aliphatic polycarbonates and polyolefins. In one aspect, provided blends comprise aliphatic polycarbonates such as poly(propylene carbonate) and a lesser amount of a crystalline or semicrystalline polymer. In certain embodiments, provided blends are characterized in that they exhibit unexpected improvements in their elongation properties. In another aspect, the invention provides methods of making such materials and applications of the materials in applications such as the manufacture of consumer packaging materials.

Integrated Process For Making Inflatable Article

An integrated process for making an inflatable laminated article comprises extruding a first film and a second film, followed by cooling the first film and the second film so that the films will not fuse to one another upon contact with each other. The films are then brought into contact with one another, and selected portions of one or both films are heated so that the films are heat sealed to one another in a selected area having a desired pattern. The unsealed area between the film provides inflatable chambers between the first film and the second film. An alternative process utilizes a film tubing in lay-flat configuration to produce a laminated inflatable article.

Process for annealing photovoltaic encapsulation polymer film

A process for annealing photovoltaic polymer encapsulation film ( 3 ), the film comprising polymer molecules substantially oriented along a machine direction, characterized in that the film is heated, supported on a support surface of support means ( 12 ), with heating means to a relaxation temperature to increase the isotropy of the polymer molecules such that the film is at least partly annealed, the support means ( 12 ) comprising a fluid ( 13 ) between the film ( 3 ) and the support surface.

Biaxially oriented polypropylene film for heat sealing

The present invention related to a film comprising multiple co-extruded film layers, the film having a length and a width, and a thickness defined as the dimension of the film perpendicular to the plane defined by the length and the width, wherein the film is a bi-axially oriented film comprising at least a core layer A, having a first and a second surface, and one or two sealing layer(s) B, wherein the core layer A comprises a polypropylene, and wherein the sealing layer B comprises >50.0 wt % of a polyethylene comprising moieties derived from ethylene and moieties derived from an α-olefin comprising 4 to 10 carbon atoms, the polyethylene having a density of >870 and <920 kg/m3 as determined in accordance with ASTM D1505 (2010), with regard to the total weight of the sealing layer B, wherein the sealing layer B directly adheres to one of the first or second surface of the core layer A. Such film allows for the production of a sealed package having a sufficiently high sealing strength at reduced sealing temperatures, also referred to as the seal initiation temperature.

MANUFACTURING METHOD AND MANUFACTURING APPARATUS FOR LAMINATE

A manufacturing method including a first conveying step of conveying the sheet in a lateral or oblique lateral direction along a sheet pass line below the discharge port; a receiving step of receiving a tip part of the film raw material with the sheet on the sheet pass line, the tip part being discharged and hanging down from the discharge port; a second conveying step of conveying the sheet and the film raw material after the tip part overlaps the sheet on the sheet pass line, the second conveying step conveying the sheet and the film raw material in a mutually overlapping state along the sheet pass line; and an introducing step of introducing the sheet and the film raw material in the mutually overlapping state to the joining part from the sheet pass line. 11. A manufacturing method. for manufacturing a laminate W by laminating a thermoplastic film F on a sheet S at a joining part after a pass line forming process of forming a pass line for a film-formed film raw material M , the film raw material M becoming the thermoplastic film F , the pass line forming process comprising:a hanging-down step of causing a resin in a molten state to hang down from a discharge port TO of a discharger T, the resin becoming the film raw material M, and the hanging-down step continuously discharging the film raw material M;{'b': 1', '1, 'a first conveying step of conveying the sheet S in a lateral or oblique lateral direction along a sheet pass line below the discharge port TO;'}{'b': 1', '1, 'a receiving step of receiving a tip part E of the film raw material M with the sheet S on the sheet pass line , the tip part E being discharged and hanging down from the discharge port TO;'}{'b': 1', '1', '1', '1', '1, 'a second conveying step of conveying the sheet S and the film raw material M after the tip part E overlaps the sheet S on the sheet pass line , the second conveying step conveying the sheet S and the film raw material M in a mutually overlapping state along the sheet pass line ; ...

Medical device having outer polymeric member including one or more cuts

A medical device includes an outer polymeric tubular member and an inner tubular member. The outer polymeric tubular member includes one or more cuts formed therein to increase flexibility of the outer polymeric tubular member and includes an inner surface. The inner tubular member extends through the outer polymeric tubular member and has an outer surface in slidable contact with the inner surface of the outer polymeric tubular member. The outer polymeric tubular member is able to move relative to the inner tubular member as the medical device bends. In an example, the outer tubular member may be formed of a heat shrink material.

METHOD AND MACHINE FOR PRODUCING A SINGLE-WALLED OR MULTI-WALLED TUBULAR THERMOPLASTIC BODY

In a method for producing at least a single-walled tubular thermoplastic body in a machine, a nozzle head extrudes at least one tubular preform. The preform is expanded to a predefined dimension in a transverse direction and to a predefined shape in an expansion process using an expanding mandrel, the preform remaining open at the top and bottom. When the at least one preform has cooled off, the expanding mandrel is changed into a non-expanded state and the at least single-walled tubular body is removed from the machine. 1. A method for producing at least a single-walled tubular body from thermoplastic material in a machine ,in which at least one tubular preform is output from the nozzle head of an extrusion device,the at least one tubular preform is guided vertically downwards,the at least one tubular preform is expanded in an expansion process by an expanding mandrel arranged centrically to the nozzle head to a predefined dimension in a transverse direction and to a predefined shape, the preform remaining open at the top and bottom,after cooling the at least one tubular preform, the expanding mandrel is moved into a non-expanded state,and in which afterwards the at least single-walled tubular body is removed from the machine.2. The method according to claim 1 , in which for producing a single-walled corrugated tubular body or a tubular body provided with cups claim 1 , the expanding mandrel has corrugated expanding elements or expanding elements provided with cups.3. The method according to claim 1 , in which for producing at least a single-walled tubular body claim 1 , an at least two-part hollow mold is arranged around the at least one tubular preform claim 1 ,during expansion by the expanding device, the at least one tubular preform is pressed against one of a corrugated profile or a cup profile of the hollow mold and the at least one tubular preform adopts the shape of one of the corrugated profile or the cup profile by applying one of a vacuum to the hollow ...

Plastic bags, rolls of plastic bags, and tubular blown film processes of making the same

A process of manufacturing a roll of plastic bags. The process includes forming a tubular blown film, and collapsing the tubular blown film so that the tubular blown film includes a first side, a second side, a first edge, and a second edge. Openings are cut in the collapsed tubular blown film, and sealing closure mechanisms are inserted through the openings into the collapsed tubular blown film. The sealing closure mechanisms are then fixed to the collapsed tubular blown film.

Process for in-line inspection of functional film layer containing detectable component

The continuity of a functional layer of a web (32, 60, 78) is assessed by forwarding the web, detecting (42, 63) the presence of the functional layer and a discontinuity and/or a thin region in the functional layer, and generating a signal in response to the discontinuity and/or thin region. The functional layer comprises a detectable component (360) in a thermoplastic composition. The detecting is carried out by a machine vision system capable of detecting the detectable component (360) in the functional layer. The detectable component (360) can be active or passive. Also included are systems for carrying out the process.

OPTICAL FILM, RETARDER FILM, AND METHOD FOR MANUFACTURING SAME

An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B, wherein the optical film includes a phase separation structure that expresses structural birefringence, the phase separation structure includes a phase (A) containing as a main component the polymerization unit A and a phase (B) containing as a main component the polymerization unit B, and |n(A)−n(B)| is 0.12 or more. 1. An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B , whereinthe optical film includes a phase separation structure that expresses structural birefringence,the phase separation structure includes a phase (A) containing as a main component the polymerization unit A and a phase (B) containing as a main component the polymerization unit B, andan absolute value |n(A)−n(B)| of a difference between a refractive index n(A) of a polymer (A) formed of the polymerization unit A and a refractive index n(B) of a polymer (B) formed of the polymerization unit B is 0.12 or more.2. The optical film according to claim 1 , wherein an absolute value |Tg(A)−Tg(B)| of a difference between a glass transition temperature Tg(A) (° C.) of the polymer (A) and a glass transition temperature Tg(B) (° C.) of the polymer (B) is 180° C. or higher.3. The optical film according to claim 1 , wherein the glass transition temperature Tg(A) (° C.) is 120° C. or higher.4. The optical film according to claim 1 , wherein the phase separation structure has a configuration of any of lamella claim 1 , cylinder claim 1 , and spheroid.5. The optical film according to claim 1 , wherein a distance between phases in the phase separation structure is 200 nm or less.6. The optical film according to claim 1 , wherein the copolymer P is a block copolymer having a block (A) containing as a main component the polymerization unit A and a block (B) containing as a main component the polymerization unit B.8. The ...

BIAXIALLY ORIENTED POLYESTER FILM AND METHOD FOR PRODUCING SAME

The present invention is to provide a method for producing a biaxially oriented polyester film that is superior in mechanical properties, transparency, and heat resistance, and at the same time, superior in secondary processing suitability and printing appearance. Disclosed is a biaxially oriented polyester film, having at least one surface satisfying the following requirements (1) and (2), and the film satisfying the following requirements (3) and (4). (1) A maximum peak height roughness (SRp) is 1.2 μm to 1.6 μm. (2) An arithmetic average roughness (SRa) is 0.024 μm to 0.045 μm. (3) A tensile strength in a longitudinal direction and a width direction is 180 MPa to 300 MPa. (4) A haze is 7% or less. 1. A biaxially oriented polyester film , having at least one surface satisfying the following requirements (1) and (2) , and the film satisfying the following requirements (3) and (4).(1) A maximum peak height roughness (SRp) is 1.2 μm to 1.6 μm.(2) An arithmetic average roughness (SRa) is 0.024 μm to 0.045 μm.(3) A tensile strength in a longitudinal direction and a width direction is 180 MPa to 300 MPa.(4) A haze is 7% or less.2. The biaxially oriented polyester film according to claim 1 , wherein the at least one surface satisfying the requirements (1) and (2) has a diiodomethane contact angle of 29° or less.3. The biaxially oriented polyester film according to claim 1 , comprising 500 to 1500 ppm by mass of inorganic particles.4. The biaxially oriented polyester film according to any claim 1 , wherein the inorganic particles are silica particles.5. The biaxially oriented polyester film according to claim 4 , wherein the silica particles have a pore volume of 0.6 ml/g to 2.0 ml/g.6. A film roll obtained by winding up the biaxially oriented polyester film according to .7. A method for producing a biaxially oriented polyester film claim 1 , comprising:mixing a polyethylene terephthalate-based resin containing 7000 ppm by mass or more and 22000 ppm by mass or less of ...

Environmentally friendly dry cleaning bags and methods of making same

A method of manufacturing a biodegradable dry cleaning bag is disclosed, the method including loading an environmentally friendly slurry into a hopper, extruding the environmentally friendly slurry, passing the environmentally friendly slurry through a die, inflating the environmentally friendly slurry into a cylindrical shape, thereby creating a cylindrical member, passing the cylindrical member over a first roller, and rolling the cylindrical member onto a roll.

Stretch film

A novel film material that is capable of reducing an amount of carbon dioxide discharged during incineration for disposal is provided. The novel film material is a stretch film formed to a thickness in a range of 5 to 50 μm. The stretch film contains a thermoplastic resin composition that includes a carbon dioxide absorbing substance in an amount in a range of 0.1 to 10 wt %.

Polyethylene Films

Films produced with polyethylene blends having improved stiffness and heat sealing are provided herein. The films may have an average MD/TD 1% secant modulus greater than or equal to about 3300 psi. The films may also have a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or a hot tack seal initiation temperature at 1 N of less than or equal to about 95° C. 1. A film comprising a polyethylene blend , the polyethylene blend comprising two polyethylene compositions , each polyethylene composition having a density , wherein the density of each of the polyethylene compositions differs from the other in an amount between about 0.050 g/cmand about 0.060 g/cm; and further wherein the film has (i) an average MD/TD 1% secant modulus greater than or equal to about 3300 psi and (ii) either (ii-a) a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or (ii-b) a heat seal initiation temperature at 1 N of less than or equal to about 95° C.2. (canceled)3. The film of claim 1 , wherein the polyethylene blend has a density between about 0.918 g/cmand about 0.922 g/cm claim 1 , and further wherein the polyethylene blend has an MI (I) between about 0.90 g/10 min and about 1.10 g/10 min.4. (canceled)5. The film of claim 1 , wherein each of the polyethylene compositions has a density between about 0.890 g/cmand about 0.960 g/cm.6. The film of claim 1 , wherein each of the polyethylene compositions has an MI (I) between about between about 0.1 g/10 min and about 15.0 g/10 min.7. The film of claim 1 , wherein the film has a thickness of about 1 mil or about 3 mil.8. The film of claim 1 , wherein one of the polyethylene compositions of the polyethylene blend has a density of about 0.8961 g/cm claim 1 , and the other polyethylene composition has a density of about 0.9510 g/cm.9. The film of claim 8 , wherein the polyethylene blend comprises the polyethylene composition having a density of about 0.8961 g/cmin an amount between about 55 ...

BIAXIALLY ORIENTED POLYESTER FILM AND METHOD FOR PRODUCING SAME

The invention provides a biaxially oriented polyester film that is suitable for a food packaging material subjected to a boiling sterilization treatment or a retort sterilization treatment, has excellent impact resistance, bending resistance and uniform mechanical properties and, simultaneously, renders an oligomer component contained in the film less likely to be eluted. The biaxially oriented polyester film has the following characteristics: (a) the film comprises a resin composition containing 60 mass % or more of polybutylene terephthalate; (b) a thickness precision in a widthwise direction of the film is 1 to 20% or less; (c) an oligomer component contained in the film is 2000 to 12000 ppm; and (d) a mass of the oligomer component eluted into a 50% ethanol solution is 0.02 mg or less per square inch of the film when the film is immersed in the 50% ethanol solution and heated at 66° C. for 2 hours. 1. A biaxially oriented polyester film having following characteristics (a) to (d):(a) the film comprises a resin composition containing 60 mass % or more of polybutylene terephthalate;(b) a thickness precision in a widthwise direction of the film is 1 to 20%;(c) an oligomer component contained in the film is 2000 to 12000 ppm; and(d) a mass of the oligomer component eluted into a 50% ethanol solution is 0.02 mg or less per square inch of the film when the film is immersed in the 50% ethanol solution and heated at 66° C. for 2 hours.2. The biaxially oriented polyester film according to claim 1 , wherein a plane orientation coefficient of the film is 0.136 to 0.160.3. A method for producing the biaxially oriented polyester film according to claim 1 , the method comprising following steps (a) to (f) and satisfying following requirement (g):(a) a step of feeding the resin composition containing 60 mass % or more of polybutylene terephthalate into an extruder;(b) a step of heating and melting the resin composition to produce a molten resin composition of 240 to 290° C.;(c ...

Retardation film and production method for retardation film

A phase difference film composed of a resin containing a copolymer including polymerization units A and B, the phase difference film including a cylindrical phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the following condition (1) or (2). Condition (1): D(A)>D(B) and f(B)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are parallel to each other. Condition (2): D(A)>D(B) and f(A)>0.5, and a direction giving a maximum refractive index among in-plane directions and an orientation direction of a cylinder in the phase separation structure are orthogonal to each other.

Oriented polyethylene films and a method for making the same

A first oriented film comprising a first polyethylene composition which comprises: from 20 to 50 wt % of a first linear low density polyethylene polymer having a density greater than 0.925 g/cc and an I 2 lower than 2 g/10 min; and from 80 to 50 wt % of a second linear low density polyethylene polymer having a density lower than or equal to 0.925 g/cc and an I 2 greater than or equal to 2 g/10 min; wherein the first polyethylene composition has an 12 from 0.5 to 10 g/10 min and a density from 0.910 to 0.940 g/cc is provided.

METHOD OF MAKING A FLEXIBLE PACKAGE MADE OF POLYMERIC FILM

A method of making a flexible package made of polymeric film is provided. The method comprises the steps of: a) obtaining post-industrial recycled material from post-industrial recycling of precursor polymeric film formed of precursor polymeric material which is substantially the same as the virgin polymeric material of step c), b) providing at least 30 weight-% post-industrial recycled material obtained in step a) based on the overall weight of the polymeric film, c) providing up to 70 weight-% of virgin polymeric material based on the total weight of the polymeric film, and d) jointly melting the virgin polymeric material and the post-industrial recycled material. The method comprises the steps of: e) extruding the molten polymeric material and molten post-industrial recycled material to form a polymeric film, f) providing print on one or both surfaces of the polymeric film, and g) converting the polymeric film into the flexible package. 1. A method of making a flexible package made of polymeric film , the method comprising the steps of:a) obtaining post-industrial recycled material from post-industrial recycling of precursor polymeric film formed of precursor polymeric material which is substantially the same as the virgin polymeric material of step c);b) providing at least 30 weight-% post-industrial recycled material obtained in step a) based on the overall weight of the polymeric film;c) providing up to 70 weight-% of virgin polymeric material based on the total weight of the polymeric film;d) jointly melting the virgin polymeric material and the post-industrial recycled material to form a molten polymeric material and molten post-industrial recycled material;e) extruding the molten polymeric material and molten post-industrial recycled material to form a polymeric film;f) providing print on one or both surfaces of the polymeric film; andg) converting the polymeric film into the flexible package.2. The method of claim 1 , wherein the precursor polymeric film ...

SYNTHETIC RESIN MICROPOROUS FILM AND MANUFACTURING METHOD THEREOF, AND SEPARATOR FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE

The present invention provides a synthetic resin microporous film which has excellent permeability of lithium ions, can constitute high performance power storage devices, and is less likely to cause a short circuit between a positive electrode and a negative electrode as well as rapid decrease in discharge capacity due to a dendrite even when used in high power applications. The synthetic resin microporous film of the present invention is a synthetic resin microporous film comprising a synthetic resin, the synthetic resin microporous film being stretched, the synthetic resin microporous film having, in a cross section along a thickness direction and a stretching direction of the synthetic resin microporous film: a plurality of support portions extending in the thickness direction of the synthetic resin microporous film; a plurality of fibrils formed between the support portions; and the support portions having the number of branch structures of 150 or less per 100 μm; and the synthetic resin microporous film being configured such that micropore portions are formed in areas surrounded by the support portions and the fibrils. 1. A synthetic resin microporous film comprising a synthetic resin , the synthetic resin microporous film being stretched ,the synthetic resin microporous film having, in a cross section along a thickness direction and a stretching direction of the synthetic resin microporous film:a plurality of support portions extending in the thickness direction of the synthetic resin microporous film;a plurality of fibrils formed between the support portions; and{'sup': '2', 'the support portions having the number of branch structures of 150 or less per 100 μm; and'}the synthetic resin microporous film being configured such that micropore portions are formed in areas surrounded by the support portions and the fibrils.2. The synthetic resin microporous film according to claim 1 , wherein a degree of gas permeability is 10 sec/100 mL/16 μm or more and 150 sec/ ...

METHOD FOR PRODUCING POLYESTER FILM HAVING FURANDICARBOXYLATE UNIT

It is provided that a method for producing a biaxially oriented polyester film that can be used for industrial and packaging applications. A method for producing a biaxially oriented polyester film, comprising: a step of feeding a polyester resin into an extruder, a step of extruding the molten polyester resin from an extruder to obtain a molten resin sheet at 250 to 310° C., a step of attaching the molten resin sheet closely to a cooling roll by an electrostatic application method to obtain an unstretched sheet, and a step of biaxially stretching the unstretched sheet, wherein the polyester resin fulfills the following (A) to (C): (A) the polyester resin comprises a polyethylene furandicarboxylate resin composed of a furandicarboxylic acid and ethylene glycol; (B) an intrinsic viscosity of the polyester resin is 0.50 dL/g or more; (C) a melt specific resistance value at 250° C. of the polyester resin is 3.0×10ω·cm or less. 1. A method for producing a biaxially oriented polyester film , comprising:a step of feeding a polyester resin into an extruder,a step of extruding the molten polyester resin from an extruder to obtain a molten resin sheet at 250 to 310° C.,a step of attaching the molten resin sheet closely to a cooling roll by an electrostatic application method to obtain an unstretched sheet, anda step of biaxially stretching the unstretched sheet,wherein the polyester resin fulfills the following (A) to (C):(A) the polyester resin comprises a polyethylene furandicarboxylate resin composed of a furandicarboxylic acid and ethylene glycol;(B) an intrinsic viscosity of the polyester resin is 0.50 dL/g or more;{'sup': '7', '(C) a melt specific resistance value at 250° C. of the polyester resin is 3.0×10Ω·cm or less.'}2. The method for producing a biaxially oriented polyester film according to claim 1 , wherein a melt specific resistance value of the molten resin sheet is 2.5×10Ω·cm or less at a temperature at which the molten resin sheet is extruded from the ...

METHOD FOR PRODUCING BIODEGRADABLE POLYESTER FILM

Provided is a method with which a biodegradable polyester film containing polyhydroxyalkanoate can be stably produced by film blowing under practical processing conditions. A method for producing a biodegradable polyester film containing a biodegradable aliphatic polyester (A) and a fatty acid amide (B) by film blowing, the biodegradable aliphatic polyester (A) containing polyhydroxyalkanoate, the method including: a step (I) of dry-blending the biodegradable aliphatic polyester (A) with a masterbatch containing the fatty acid amide (B) and a base material resin; and a step (II) of subjecting the mixture obtained in the step (I) to film blowing. 1. A method for producing a biodegradable polyester film , comprising:dry-blending a biodegradable aliphatic polyester (A) with a masterbatch comprising a fatty acid amide (B) and a base material resin; andsubjecting the dry-blended mixture to film blowing,wherein the biodegradable aliphatic polyester (A) comprises poly(3-hydroxyalkanoate), andthe biodegradable polyester film comprises the biodegradable aliphatic polyester (A) and the fatty acid amide (B).2. The method according to claim 1 , wherein the biodegradable polyester film further comprises an aliphatic-aromatic polyester (C).3. The method according to claim 1 , wherein the base material resin in the masterbatch is at least one selected from the group consisting of the biodegradable aliphatic polyester (A) and the aliphatic-aromatic polyester (C).4. The method according to claim 1 , wherein the fatty acid amide (B) is erucic acid amide.5. The method according to claim 1 , wherein a content of the fatty acid amide (B) in the masterbatch is 5 to 20% by weight.6. The method according to claim 2 , wherein a content of the fatty acid amide (B) in the biodegradable polyester film is 0.1 to 3 parts by weight based on 100 parts by weight of a total content of the biodegradable aliphatic polyester (A) and the aliphatic-aromatic polyester (C).7. The method according to claim ...

Cross-Linked Polyolefin Separator and Manufacturing Method Thereof

A method for manufacturing a crosslinked polyolefin separator and the crosslinked polyolefin separator obtained therefrom are provided. The method includes non-grafted polyolefin having a weight average molecular weight of 300,000 or more and silane-grafted polyolefin having a weight average molecular weight of 300,000 or more. The method minimizes gel formation, a side reaction occurring in an extruder during the manufacture of a-the separator, and provides a-the separator having a uniform surface. 1. A method for manufacturing a crosslinked polyolefin separator , comprising:{'b': '1', '(S) mixing non-grafted polyolefin having a weight average molecular weight of 300,000 or more, silane-grafted polyolefin having a weight average molecular weight of 300,000 or more, a diluting agent, an initiator, an alkoxysilane compound containing a carbon-carbon double bonded group and a crosslinking catalyst to an extruder and then carrying out reactive extrusion at 200° C. or higher to obtain a silane-grafted polyolefin composition;'}{'b': '2', '(S) molding and orienting the reactive extruded silane-grafted polyolefin composition in the form of a sheet;'}{'b': '3', '(S) extracting the diluting agent from the oriented sheet to obtain a porous membrane;'}{'b': '4', '(S) thermally fixing the porous membrane; and'}{'b': '5', '(S) crosslinking the porous membrane in the presence of water,'}wherein a content of the alkoxysilane compound containing the carbon-carbon double bonded group is 0.01-2 parts by weight based on 100 parts by weight of a total weight of the non-grafted polyolefin, silane-grafted polyolefin and the diluting agent.2. The method for manufacturing the crosslinked polyolefin separator according to claim 1 , wherein a weight ratio of the non-grafted polyolefin to the silane-grafted polyolefin is 90:10-20:80.3. The method for manufacturing the crosslinked polyolefin separator according to claim 1 , wherein the non-grafted polyolefin has a weight average molecular ...

MOLDED ARTICLE

The invention provides a molded article having excellent mechanical strength, heat resistance, surface roughness, and ferroelectricity. The molded article contains a crystal of a vinylidene fluoride/tetrafluoroethylene copolymer. The crystal is a β crystal and is a nano-oriented crystal that has a size of 100 nm or smaller. The molded article has an arithmetic average roughness of 3.0 μm or lower. 1. A molded article comprising a crystal of a vinylidene fluoride/tetrafluoroethylene copolymer ,the crystal being a β crystal and being a nano-oriented crystal that has a size of 100 nm or smaller,the molded article having an arithmetic average roughness of 3.0 μm or lower.2. The molded article according to claim 1 ,wherein the vinylidene fluoride/tetrafluoroethylene copolymer has high crystallinity.3. The molded article according to claim 1 ,wherein the vinylidene fluoride/tetrafluoroethylene copolymer contains 50 to 95 mol % of a vinylidene fluoride unit and 5 to 50 mol % of a tetrafluoroethylene unit relative to 100 mol % in total of the vinylidene fluoride unit and the tetrafluoroethylene unit.4. The molded article according to claim 1 ,wherein the molded article is a ferroelectric.5. The molded article according to claim 1 ,wherein the molded article has a melting point of 130° C. or higher.6. The molded article according to claim 1 ,wherein the molded article has a heatproof temperature of 90° C. or higher.7. The molded article according to claim 1 ,wherein the molded article has an elastic modulus of 1.0 GPa or higher.8. The molded article according to claim 1 ,{'sup': '2', 'wherein the molded article has a remanent polarization of 45 mC/mor higher.'}9. The molded article according to claim 1 ,wherein the molded article has a coercive field of 35 MV/m or lower. The invention relates to molded articles having excellent mechanical strength, heat resistance, surface roughness, and ferroelectricity.A variety of organic dielectric films and inorganic dielectric films ...

ACRYLIC RESIN FILM AND PRODUCTION METHOD THEREFOR

A resin film comprising a multilayer structure acrylic polymer and the film having an acid value of not more than 0.018 mmol/g in an acetone insoluble matter, an acid value of not more than 0.012 mmol/g in an acetone soluble matter, a glass transition temperature of not less than 80° C. and a thickness of 5 to 300 pm is obtained by a method comprising emulsion polymerization for producing a latex comprising multilayer structure acrylic polymer, coagulating the latex comprising the multilayer structure acrylic polymer to obtain a slurry, washing and dehydrating the slurry, drying the dehydrated slurry to remove the multilayer structure acrylic polymer, mixing 0 to 35% by mass of an acrylic resin and 65 to 100% by mass of the removed multilayer structure acrylic polymer and subjecting the resultant mixture melted to an extrusion molding. 1. A resin film , comprising:a multilayer structure acrylic polymer,wherein the film has an acid value of not more than 0.018 mmol/g in an acetone insoluble matter, an acid value of not more than 0.012 mmol/g in an acetone soluble matter, a glass transition temperature of not less than 80° C., and a thickness of 5 to 300 μm.2. The resin film according to claim 1 , whereinthe multilayer structure acrylic polymer comprises a polymer (a), a polymer (b) and a polymer (c),the polymer (a) is a polymer composed of 40 to 98.99% by mass of a structural unit derived from methyl methacrylate, 1 to 60% by mass of a structural unit derived from an alkyl acrylate having a 1 to 8 carbon alkyl group, 0.01 to 1% by mass of a structural unit derived from a grafting agent, and 0 to 0.5% by mass of a structural unit derived from a crosslinking agent;the polymer (b) is a polymer composed of 70 to 99.5% by mass of a structural unit derived from an alkyl acrylate having a 1 to 8 carbon alkyl group, 0 to 30% by mass of a structural unit derived from methyl methacrylate, 0.5 to 5% by mass of a structural unit derived from a grafting agent, and 0 to 5% by mass ...

OYSTER PAPER AND MANUFACTURING METHOD THEREOF

An oyster paper and a manufacturing method thereof are provided. The oyster paper is made of 60%-70% oyster shell powder, 10%-20% polymer, 15%-17% natural biodegradation inducing agent, and 3%-5% natural biodegradation assisting additive agent, by volume ratio, which are subjected to mixing and pre-melting processing, followed by compounding and pelletizing to prepare oyster paper pellets, which are then subjected to film blowing processing to be film-blown into an oyster paper product having a thickness of 0.05-0.5 millimeters. The oyster paper possesses the quality of wood pulp paper and shows bettered stiffness and wider applications. The oyster paper also provides, after being disposed and buried, an effect of being 100% natural degradation into compost for fertilizing the soil. As such, a kind of oyster paper featuring recycling and reuse of oceanic creature waste shell and natural microorganism induced degradation for composting and recycling and a manufacturing method thereof are provided. 1. An oyster paper , which is made of 60%-70% oyster shell powder , 10%-20% polymer , 15%-17% natural biodegradation inducing agent , and 3%-5% natural biodegradation assisting additive agent , by volume ratio , that are subjected to mixing and pre-melting processing according to such ratios , followed by compounding and pelletizing to prepare a plurality of oyster paper pellets , the oyster paper pellets being subsequently subjected to film blowing processing to be subjected to a film blowing operation to form an oyster paper having a thickness of 0.05 millimeters to 0.5 millimeters.2. The oyster paper according to claim 1 , wherein the oyster shell powder is selected as oyster shell powder that are calcinated at 600° C.-800° C. and sieved with a mesh number of 2000 to have a powder particle diameter less than 6.5 micrometers (μm).3. The oyster paper according to claim 1 , wherein the polymer is selected as one of a member of a polyethylene group and polypropylene or a ...

WATER SOLUBLE SHOPPING BAG AND PREPARATION METHOD THEREOF

A water-soluble shopping bag and a preparation method thereof. The water-soluble shopping bag consists of the following components according to the following parts by weight: 100 parts of polyvinyl alcohol, 8-20 parts of a composite plasticizer; 10-30 parts of a polysaccharide and the derivative thereof; 1-5 parts of a processing aid, 0.1-0.5 parts of a film slipping agent and 0.5-3.0 parts of a film anti-blocking agent. The preparation method comprises the following steps: mixing the components according to the parts by weight, extruding the mixture to form pellets after mixing, then performing blow molding to form a film, and then preparing various types and sizes of water-soluble shopping bags. The water-soluble shopping bag has higher bearing capacity and cold water solubility, is suitable for use in water-free environment, and dissolves upon contacting water without producing pollution after being used. 2. The water-soluble shopping bag according to claim 1 , wherein the polyvinyl alcohol is selected from partially alcoholized polyvinyl alcohol with a polymerization degree of 300 to 2400 and an alcoholysis degree of 88% claim 1 , which specifically comprises more than one powder materials with brand names of PVA-0388 claim 1 , PVA-0588 claim 1 , PVA-1788 claim 1 , PVA-2088 claim 1 , PVA-2288 and PVA-2488.3. The water-soluble shopping bag according to claim 1 , wherein the composite plasticizer comprises polyol claim 1 , polyol ether and fatty acid amine or fatty alcohol amine claim 1 , and the composite plasticizer is composed of polyol claim 1 , polyol ether and fatty acid amine or fatty alcohol amine in a mass ratio of 6:3:1.4. The water-soluble shopping bag according to claim 3 , wherein the polyol is water-soluble polyol claim 3 , which comprises one of glycerol claim 3 , ethylene glycol claim 3 , diethylene glycol claim 3 , sorbitol claim 3 , trimethylolpropane claim 3 , pentaerythritol and mannitol.5. The water-soluble shopping bag according to claim 1 , ...

Multilayer film structure comprising renewably sourced materials

A coextruded multilayer structure which can be oriented and a process therefor are disclosed in which the structure comprises a poly(hydroxyalkanoic acid) polymer (PHA) composition layer, a tie layer, and a sealant layer and the process comprises, consists essentially of, or consists of coextruding a PHA composition, a tie layer composition, and a sealant layer composition to produce a tubular multiplayer structure; cooling the multilayer film structure in a first bubble to produce a tubular multilayer structure; orienting the tubular multilayer structure under heating in a second bubble to produce an oriented tubular multilayer structure; and relaxing the oriented tubular multilayer structure under heating in a third bubble. The structure can be used to produce an article such as a packaging article.

METHOD FOR PRODUCING CURABLE SILICONE SHEET HAVING HOT MELT PROPERTIES

Provided herein is: a method of efficiently manufacturing a curable silicone sheet with excellent flatness and uniformity, containing a curable particulate silicone composition with excellent handling/workability and curing properties; and a method of manufacturing a laminate body containing the curable silicone sheet. A method of manufacturing a curable silicone sheet having hot melt properties, comprises the following steps: 1) a step of mixing organopolysiloxane resin fine particles, a curing agent, and a functional filler; 2) a step of kneading while heating and melting the mixture obtained in step 1); 3) a step of laminating the heated and melted mixture obtained in step 2) between films provided with at least one release surface; and 4) a step of stretching the laminate body obtained in step 3) between rollers to mold a curable silicone sheet having a specific film thickness. 1. A method of manufacturing a curable silicone sheet having hot melt properties , comprising the following steps:1) mixing organopolysiloxane resin fine particles, a curing agent, and a functional filler;2) kneading a mixture obtained in step 1) while heating and melting at a temperature of 120° C. or lower;3) laminating a heated and melted mixture obtained in step 2) between films provided with at least one release surface; and4) stretching a laminate body obtained in step 3) between rollers to mold a curable silicone sheet having a specific film thickness.2. The method of manufacturing a curable silicone sheet having hot melt properties according to claim 1 , wherein:the melt viscosity of the heated and melted mixture obtained in step 21, as measured by a Koka flow tester at 150° C., is within a range of 1 to 1,000 Pas,step 3) is further defined as a step of laminating the heated and melted mixture between the films having at least one release surface by discharging the heated and melted mixture while molding into a film or a string using a die and a nozzle, andas a pre-step of step 4) ...

Anti-Spoilage Packaging, Methods for Preparation, and Use Thereof

An anti-spoilage packaging material is composed of a film having one or more layers; and hygroscopic material embedded within at least one of the one or more layers. The hygroscopic material have an average particle size of 25 μm or less and is present in the one or more layers in amount from 1 wt. % to 20 wt. %. The packaging material maintains the equilibrium relative humidity (ERH) of packed goods between 95% and 100% and prevents spoilage of produce for a longer period than conventional packaging. 1. An anti-spoilage packaging material comprisinga film comprising one or more layers;hygroscopic material embedded within at least one of the one or more layers;{'sub': '4', 'wherein the hygroscopic material comprises a salt, SO, and at least one of magnesium and calcium;'}wherein the hygroscopic material has an average particle size of 25 μm or less and is present in the one or more layers in amount from 1 wt. % to 20 wt. %; andwherein the packaging material maintains an equilibrium relative humidity (ERH) of packed goods between 95% and 100%.2. The packaging material of claim 1 , wherein the average particle size is 20 μm or less.3. The packaging material of claim 1 , wherein at least one layer of the one or more layers comprises a foaming agent.4. The packaging material of wherein at least one of the one or more layers comprises micro-pores claim 1 , wherein the micro-pores are sufficiently large to allow access of water molecules within the packaging material to the hygroscopic material embedded in the at least one of the one or more layers.5. The packaging material of claim 1 , wherein the film comprises at least one polymer selected from ethylene vinyl acetate claim 1 , low density polyethylene claim 1 , linear low density polyethylene claim 1 , and medium density polyethylene.6. The packaging material of claim 1 , wherein the film further comprises at least one selected from anti-block agents claim 1 , antioxidants claim 1 , lubricants claim 1 , and ...

RETARDATION FILM AND PRODUCTION METHOD FOR RETARDATION FILM

A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B, the phase difference film including a lamellar phase separation structure that generates a structural birefringence, the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and the phase difference film satisfying the formulae (1A): f(A)>0.5 and (2):D(A)>D(B), or the formulae (1B): f(B)>0.5 and (2). f(A) represents a total weight ratio of the polymerization unit A in the copolymer P, f(B) represents a total weight ratio of the polymerization unit B in the copolymer P, D(A)=ReA(450)/ReA(550), D(B)=ReB(450)/ReB(550), and ReA(450), ReA(550), ReB(450) and ReB(550) are as defined in the description. 1. A phase difference film composed of a resin C containing a copolymer P including a polymerization unit A and a polymerization unit B ,the phase difference film including a lamellar phase separation structure that generates a structural birefringence,the phase separation structure including a phase (A) having the polymerization unit A as a main component and a phase (B) having the polymerization unit B as a main component, and [{'br': None, 'i': f', 'A, '()>0.5 \u2003\u2003(1A)'}, {'br': None, 'i': f', 'B, '()>0.5 \u2003\u2003(1B)'}, {'br': None, 'i': D', 'A', 'D', 'B, '()>() \u2003\u2003(2)'}], 'the phase difference film satisfying the following formulae (1A) and (2), or the following formulae (1B) and (2),'}whereinf(A) represents a total weight ratio of the polymerization unit A in the copolymer P, [{'br': None, 'i': D', 'A', 'ReA', 'ReA, '()=(450)/(550),'}, {'br': None, 'i': D', 'B', 'ReB', 'ReB, '()=(450)/(550),'}], 'f(B) represents a total weight ratio of the polymerization unit B in the copolymer P,'}ReA(450) represents an in-plane direction retardation (nm) of a film (A) formed from a polymer (A) composed of the ...

MANUFACTURING OF POLYETHYLENE THIN FILMS FOR HIGH-ALTITUDE BALLOONS

Aspects of the disclosure relate to manufacturing a balloon envelope for use in a stratospheric balloon system. For instance, a stream of polyethylene mixture us extruded. through an extruder in order to orient molecules of polymer chains of polyethylene and to provide an oriented film. The oriented film is passed through an electron beam and thereby crosslinking the polymer chains to provide a cross-linked film. The cross-linked film is heat sealed to form the balloon envelope 120-. (canceled)21. A balloon envelope for use in a stratospheric balloon , the balloon envelope comprising:a plurality of gores; anda plurality of tendons, each tendon of the plurality of tendons arranged at a respective one or more of the plurality of gores;the balloon envelope including a cross-linked film comprising an extruded polyethylene mixture having oriented molecules and crosslinked polymer chains, wherein the balloon envelope is formed by a process of:{'claim-text': 'bonding each of the plurality of tendons to each of the respective one or more of the plurality of gores,', '#text': 'heat bonding the cross-linked film to form the plurality of gores; and'}wherein crystallinity of the balloon envelope is greater than 50% and less than 62% after the process,wherein TD tensile strain is less than 2 mm/mm for a tensile stress of 150 MPa at −60° C. with a 50 mm/min pull rate, andwherein MD tensile strain is less than 2 mm/mm for a tensile stress of 150 MPa at −60° C. with a 50 mm/min pull rate.22. The balloon envelope of claim 21 , wherein TD tensile strain is less than 2 mm/mm for a tensile stress of 100 MPa at 23 C with a 50 mm/min pull rate.23. The balloon envelope of claim 21 , wherein MD tensile strain is less than 2 mm/mm for a tensile stress of 100 MPa at 23 C with a 50 mm/min pull rate.24. The balloon envelope of claim 21 , wherein ID tensile strain is less than 2 mm/mm for a tensile stress of 140 MPa at −40 C with a 50 mm/min pull rate.25. The balloon envelope of claim 21 , ...

CARBON NANOTUBE PRODUCT MANUFACTURING SYSTEM AND METHOD OF MANUFACTURE THEREOF

A method of manufacturing a carbon nanotube product comprising: blending an unaligned carbon nanotube material with solid solvent particles; activating a nanotube solvent by liquefying the solid solvent particles; producing a nanotube dope solution by mixing the nanotube solvent and the unaligned carbon nanotube material; forming a carbon nanotube proto-product by extruding the nanotube dope solution; and forming an aligned carbon nanotube product by solidifying the carbon nanotube proto-product. 118-. (canceled)19. A method of manufacturing a carbon nanotube product , comprising:mixing an unaligned carbon nanotube material comprising carbon nanotube molecules with a solvent precursor material;activating a nanotube solvent by reacting the solvent precursor material with a solvent activation agent;producing a nanotube dope solution by mixing the nanotube solvent and the unaligned carbon nanotube material;forming a carbon nanotube proto-product by extruding the nanotube dope solution thereby imparting alignment to carbon nanotube molecules of the carbon nanotube proto-product; andforming an aligned carbon nanotube product by solidifying the carbon nanotube proto-product.20. A carbon nanotube product manufacturing system , comprising:a blending unit configured to blend an unaligned carbon nanotube material with solid solvent particles;a homogenization unit configured to:activate a nanotube solvent by liquefying the solid solvent particles; andmix the nanotube solvent and the unaligned carbon nanotube material to produce a nanotube dope solution;an extrusion assembly configured to extrude the nanotube dope solution as a carbon nanotube proto-product; anda solidification module configured to solidify the carbon nanotube proto-product as an aligned carbon nanotube product.21. The method of claim 19 , wherein forming the carbon nanotube proto-product includes extruding the nanotube dope solution as a nanotube filament.22. The method of claim 19 , wherein forming the carbon ...

BIAXIALLY ORIENTED POLYESTER FILM

To provide a biaxially oriented polyester film that has extremely low content of antimony, excellent hygiene, few foreign substances, excellent transparency and heat resistance, and is excellent in printability, workability, and productivity. A biaxially oriented polyester film characterized by a content of antimony in the film of 10 ppm or less, a content of phosphorus in the film of 25 ppm or more and 75 ppm or less, an intrinsic viscosity of the film of 0.51 dl/g or more and 0.70 dl/g or less, and a number of defects with a size of 1 mm or more is 1.0 or less per 1000 square meters of the film. 1. A biaxially-oriented polyester film satisfying the following requirements (1) to (4):(1) a content of antimony in the film is 10 ppm or less;(2) a content of phosphorus in the film is 25 ppm or more and 75 ppm or less;(3) an intrinsic viscosity of the film is 0.51 dl/g or more and 0.70 dl/g or less; and(4) a number of defects with a size of 1 mm or more is 1.0 or less per 1000 square meters of the film.2. The polyester film according to claim 1 , wherein the polyester film is formed with a polyester resin as a polyester raw material containing at least one selected from aluminum compounds and at least one selected from phosphorus compounds as polymerization catalysts.3. The polyester film according to claim 1 , wherein the film has a haze of 1% or more and 8% or less.4. The polyester film according to claim 1 , wherein the film has a heat-shrinkage ratio in a longitudinal direction of 0.8% or more and 3% or less claim 1 , measured at 150° C. for 15 minutes.5. The polyester film according to claim 1 , wherein the film has a value of irregularity of thickness in each of a longitudinal direction and a transverse direction of 1% or more and 10% or less claim 1 , measured over a length of 1 m with a continuous contact-type thickness gauge.6. A packaging bag including one or more layers claim 1 , wherein at least one of the layer is the biaxially-oriented polyester film ...

EXTRUDABLE POLYMER COMPOSITES WITH MEMBRANE BARRIER PROPERTIES

The present disclosure generally relates to extrusion die systems. In particular, the present disclosure relates to the cyclical extrusion of materials to generate small sized grain features, generally in the range of nanosized grain features, in a tubular or profile shape, in which the individual nanolayers possess pores and/or polymer crystals oriented parallel to the extrusion flow direction and including products with enhanced permeation properties. 114-. (canceled)15. A blow molded product comprising 2-10 ,000 micro or nano polymer layers , at least one of the polymer layers including nanocomposites.16. The blow molded product according to claim 15 , wherein the blow molded product is packaging.17. The blow molded product according to claim 15 , wherein the blow molded product is a medical device.18. A blow molded product comprising 2-10 claim 15 ,000 micro or nano polymer layers claim 15 , at least one of the polymer layers including lamellar crystals aligned along the axis of extrusion.19. The blow molded product according to claim 18 , wherein the blow molded product is a packaging.20. The blow molded product according to claim 18 , wherein the blow molded product is a medical device.21. The blow molded product according to claim 18 , wherein the at least one of the polymer layers including lamellar crystals are aligned along the axis of extrusion to enhance barrier properties.22. The blow molded product according to claim 21 , wherein the blow molded product is packaging.23. The blow molded product according to claim 21 , wherein the blow molded product is a medical device.24. A blow molded product comprising 2-10 claim 21 ,000 micro or nano polymer layers claim 21 , at least one of the polymer layers including pores aligned along the axis of extrusion.25. The blow molded product according to claim 24 , wherein the blow molded product is packaging.26. The blow molded product according to claim 24 , wherein the blow molded product is a medical device.27. The ...

Heat-shrinkable polyester film and package

The invention provides a heat-shrinkable polyester film in which the differences in physical properties in the width direction are reduced even if the film has a small thickness. The heat-shrinkable polyester film has a main shrinkage direction in a width direction of the film and has (1) a thickness of 6-27 μm; (2) a maximum value of the molecular orientation angle of 5 degrees or less; (3) a hot-water shrinkage at 90° C. in the width direction of the film 40-85%; (4) a difference between a maximum value and a minimum value of the hot-water shrinkage at 90° C. in the width direction of the film of 2% or less; and (5) a difference between a maximum value and a minimum value of the maximum shrinkage stress at 90° C. in the width direction of the film of less than 0.3 MPa.

POLYTETRAFLUOROETHYLENE TUBE

A polytetrafluoroethylene tube is provided and has a thickness of 0.1 mm or less, a tensile elongation at break of 350% or more, and a melting energy of 0.6 J/g or more which is calculated from an endothermic peak at 370° C.±5° C. in a procedure of increasing a temperature in differential scanning calorimetry (DSC). 18-. (canceled)9. A method for manufacturing polytetrafluoroethylene tube having a thickness of 0.1 mm or less and a tensile elongation at break of 350% or more , comprising steps of extruding polytetrafluoroethylene with extension of 5% or less and sintering the extruded polytetrafluoroethylene at a temperature which is equal to or higher than a melting point of the extruded polytetrafluoroethylene.10. The method for manufacturing polytetrafluoroethylene tube according to claim 9 , wherein the thickness is 0.005 to 0.1 mm.11. The method for manufacturing polytetrafluoroethylene tube according to claim 9 , wherein the thickness is 0.01 to 0.08 mm.12. The method for manufacturing polytetrafluoroethylene tube according to claim 9 , wherein the tensile elongation at break is 450% or more.13. A method for manufacturing polytetrafluoroethylene tube having a thickness of 5% or less of an outer diameter of the polytetrafluoroethylene tube and a tensile elongation at break of 350% or more claim 9 , comprising steps of extruding polytetrafluoroethylene with extension of 5% or less and sintering the extruded polytetrafluoroethylene at a temperature which is equal to or higher than a melting point of the extruded polytetrafluoroethylene.14. The method for manufacturing polytetrafluoroethylene tube according to claim 13 , wherein the thickness is 4% or less of the outer diameter.15. The method for manufacturing polytetrafluoroethylene tube according to claim 13 , wherein the tensile elongation at break is 450% or more.16. A polytetrafluoroethylene tube having a thickness of 0.1 mm or less claim 13 , a tensile elongation at break of 350% or more claim 13 , and formed ...

Method for manufacturing resin film for thin film-capacitor and the film therefor

The present invention provides a resin film for a film capacitor making it possible to obtain the excellent heat resistance, materialize a reduction in a size of the film capacitor and an increase in a capacity thereof and satisfy a reduction in a thickness of the film and a high voltage resistance thereof. In a manufacturing method in which an extruding equipment 10 is charged with a molding material 1 to extrude a film 2 for a film capacitor from a T die 20, in which the above extruded film 2 for a film capacitor is interposed between plural rolls in a receiving device 30 and cooled and in which the above cooled film 2 for a film capacitor is wound on a winding tube 42 of a winding device 40 , 100 parts by mass of a polyetherimide resin is blended with 1 to 10 parts by mass of a fluorocarbon resin to prepare the molding material 1; the above molding material 1 is extruded through a filter 50 having apertures 51 which are 0.5 to 6 times or less as large as an average thickness of the film. 2 for a film capacitor, which is provided between the extruding equipment 10 and the T die 20; and a thickness of the film 2 for a film capacitor is controlled to 10 pm or less.

Biaxially oriented film having a particle-containing porous layer

The invention relates to a biaxially oriented single-layer or multilayer porous film which comprises at least one porous layer and said layer comprises at least one propylene polymer, at least one β-nucleating agent and particles, said particles having a melting point of over 200° C. and at most an agglomerate or at most a particle having a particle size of >1 μm being detectable on a REM recording of a film sample of 10mm2.

COMPOUND OR FILM CONTAINING THERMOPLASTIC STARCH AND A THERMOPLASTIC POLYMER

The invention relates to a method for producing a compound or a film containing thermoplastic starch, an alpha-hydroxycarboxylic acid ROHCOOH, in which R is CHor CHCH, in an amount of from 0.1 to 5, preferably 0.1 to 3, particularly preferably 0.1 to 1 wt. % in relation to the thermoplastic starch, and a thermoplastic polymer, in which method the compound or the film is exposed during or after its extrusion to an additional heating step to 100-140° C. A thermoplastic starch usable for the production of the compound, a compound produced by the method, and a transparent film produced from such a compound are also described.

POLYTETRAFLUOROETHYLENE TUBE

A polytetrafluoroethylene tube is provided and has a thickness of 0.1 mm or less, a tensile elongation at break of 350% or more, and a melting energy of 0.6 J/g or more which is calculated from an endothermic peak at 370° C.±5° C. in a procedure of increasing a temperature in differential scanning calorimetry (DSC). 1. A polytetrafluoroethylene tube having a thickness of 0.1 mm or less , a tensile strength at a tube displacement amount of 20 mm when being measured at a distance of 50 mm between chucks is 70 N/mmor more.2. The polytetrafluoroethylene tube according to claim 1 , wherein the thickness is 0.05 mm or less.3. (canceled)4. The A-polytetrafluoroethylene tube according to claim 1 , wherein a melting energy of 0.6 J/g or more which is calculated from an endothermic peak at about 370° C.±5° C. in a procedure of increasing a temperature in differential scanning calorimetry (DSC).5. The polytetrafluoroethylene tube according to claim 1 , wherein a tensile elongation at break is 350% or more.6. A polytetrafluoroethylene tube having a thickness of 0.1 mm or less claim 1 , tensile strength at a tube displacement amount of 10 mm when being measured at a distance of 50 mm between chucks is 50 to 93.0 N/mm.7. The polytetrafluoroethylene tube according to claim 6 ,{'sup': '2', 'wherein the tensile strength at a tube displacement amount of 10 mm when being measured at a distance of 50 mm between chucks is 68.0 to 93.0 N/mm.'}8. (canceled)9. The polytetrafluoroethylene tube according to claim 6 , wherein a melting energy of 0.6 J/g or more which is calculated from an endothermic peak at about 370° C.±5° C. in a procedure of increasing a temperature in differential scanning calorimetry (DSC).10. The polytetrafluoroethylene tube according to claim 6 , wherein the thickness is 0.05 mm or less.11. The polytetrafluoroethylene tube according to claim 6 , wherein a tensile elongation at break is 350% or more.12. A polytetrafluoroethylene tube having a thickness of 5% or less of ...

POLYOXYMETHYLENE FILM AND PREPARATION METHOD THEREOF

The invention is a polyoxymethylene film and a preparation method. The polyoxymethylene film comprises: 96 to 98 parts by weight of polyoxymethylene resin, 0.5 to 2 parts by weight of nucleating agent, 0.5 to 1 parts by weight of antioxidant, and 0.5 to 1 parts by weight of formaldehyde absorbent. In view of the high crystallinity and fast crystallization rate of polyoxymethylene, blown film process is used to directly blowing the molten mass extruded through a die of a screw extruder to form a blown film bubble. It is easy to form thin neck and easy to break when stretching, so the method is beneficial to form polyoxymethylene film, and has high processing efficiency, and is suitable for industrialization. Copolymerization unit —CH—CH—O— is introduced into the molecular chain of polyoxymethylene and its ratio is increased, thereby effectively reducing the crystallization rate of the materials and making it easier to form a film. 1. A method for preparing polyoxymethylene film , the polyoxymethylene film comprising:96 to 98 parts by weight of polyoxymethylene resin,0.5 to 2 parts by weight of nucleating agent,0.5 to 1 parts by weight of antioxidant, and0.5 to 1 parts by weight of formaldehyde absorbent,{'sub': 2', 'n', '2', '2', 'm', '2', '2', 'm, 'wherein the polyoxymethylene resin has a molecular formula of —(CH—O)—(CH—CH—O)—, wherein —(CH—CH—O)—are copolymerization units accounting for a molar ratio 3% to 30%,'}the method comprising the following steps:(1) forming a mixture by putting the above parts by weight of the polyoxymethylene, the nucleating agent, the antioxidant, and the formaldehyde absorbent into a high-speed mixer and mixing them uniformly;(2) forming a tube by placing the mixture into a hopper of a screw extruder, melting the mixture to obtain a molten mass, and extruding the molten mass through a die;(3) forming polyoxymethylene films by a blown film process, comprising stretching the tube upward and blowing compressed air into the tube to form a ...

Methods And Installations For Producing A Biaxially Oriented Tube From Thermoplastic Material

A method for producing a biaxially oriented tube from thermoplastic material, wherein a tube in preform condition is extruded from thermoplastic material and is subjected to a temperature conditioning. Use is made of an expansion device and of a drawing device which is arranged downstream of the expansion device. The expansion device includes a non-deformable expansion part and a run-on part located upstream of the expansion part and having an upstream sealing member. The expansion device further includes a first gas discharge duct having one or more first inlet ports in the exterior surface of the expansion device, a first inlet port being open or closed or partly closed dependent on whether or not the first inlet port is covered and closed, or partly closed, by the tube. 1. A method for producing a biaxially oriented tube from thermoplastic material comprising:drawing a tempered tube in preform condition over an expansion device using a drawing device to transform the tube from a tube in a preform condition into a biaxially oriented tube with thermoplastic material that is oriented in an axial direction and in a circumferential direction of the tube; andcooling the biaxially oriented tube;wherein the tube in preform condition is extruded from thermoplastic material using an extruder which is provided with an extruder die head having an inner die member, the inner die member forming a lumen in the tube in preform condition, wherein the tube in preform condition is subjected to a temperature conditioning, so that a tempered tube in preform condition is obtained having an orientation temperature which is suitable for the thermoplastic material;wherein the drawing device is arranged downstream of the expansion device; a non-deformable expansion part having a gradually increasing diameter to a maximum diameter at a downstream end thereof; and', 'a run-on part which is located upstream of the expansion part, the run-on part having an upstream sealing member arranged ...

RECYCLABLE PACKAGING MATERIAL AND PROCESS OF PREPARATION THEREOF

A recyclable article includes 50-90 wt % of at least one polyethylene having a density in the range 0.94 to 0.97 g/cm. The article exhibits Young's modulus less than 700 MPa; and a haze value less than or equal to 50%. The recyclable article can be included in a film or a laminate. The article can be prepared using a blown film extrusion process. 1. A recyclable article comprising:{'sup': '3', '#text': "50-90 wt % of at least one polyethylene having a density in the range 0.94 to 0.97 g/cm, wherein the article exhibits Young's modulus less than 700 MPa; and a haze value less than or equal to 50%."}2. The article as claimed in claim 1 , wherein the article exhibits Young's modulus less than 500 MPa; and a haze value less than or equal to 50%.3. The article as claimed in claim 1 , wherein the article is a film or a laminate.4. The article as claimed in claim 3 , wherein the film is a multilayer film having 3-11 layers.5. The article as claimed in claim 1 , wherein the at least one polyethylene is selected from high-density polyethylene claim 1 , medium-density polyethylene claim 1 , or combinations thereof.6. The article as claimed in claim 1 , wherein the article further comprises one or more component selected from high-density polyethylene claim 1 , low-density polyethylene claim 1 , linear low-density polyethylene claim 1 , or medium-density polyethylene.7. The article as claimed in claim 1 , wherein the article optionally comprises UV blocking agent claim 1 , pigment claim 1 , functional masterbatch claim 1 , or combinations thereof.8. The article as claimed in claim 1 , wherein the article has a thickness in the range of 50 μm to 520 μm.9. The article as claimed in claim 1 , wherein the film is made by blown film extrusion process.10. The article as claimed in claim 9 , wherein the blown film extrusion process is downward extrusion.11. The article as claimed in claim 4 , wherein the film has 5-7 layers made by downward extrusion blown film process comprising the ...

MULTI-LAYER FILMS AND METHODS OF MANUFACTURING THE SAME

The present disclosure relates to multi-layer film structures and methods of manufacturing the same. The films can be oriented and heat shrinkable. The films can include an ethylene vinyl alcohol layer. In certain instances, the films do not include an individual polyamide layer. 1. A heat shrinkable multi-layer film , comprising:an outer layer comprising at least one of polyethylene terephthalate, polyamide, or polypropylene;an inner layer comprising at least one of a polyolefin copolymer, a plastomer, an elastomer, or a terpolymer;a barrier layer comprising ethylene vinyl alcohol and an acid modified polyolefin; anda sealant layer comprising a sealant material;wherein the multi-layer film comprises an orientation factor of between about 2.0 and about 3.5 in the machine direction and between about 2.8 and about 4.0 in the cross-machine direction, wherein the multi-layer film is oriented at a temperature that is between about 85° C. and about 120° C.2. The multi-layer film of claim 1 , wherein the inner layer comprises at least one of a polyolefin plastomer claim 1 , a polyolefin elastomer claim 1 , a polyolefin terpolymer claim 1 , an ionomer claim 1 , or ethylene vinyl acetate.3. The multi-layer film of claim 2 , wherein the multi-layer film comprises ethylene vinyl acetate comprising between about 5% and about 50% claim 2 , between about 7.5% and about 40% claim 2 , between about 7.5% and about 30% claim 2 , between about 7.5% and about 25% claim 2 , between about 7.5% and about 20% claim 2 , between about 10% and about 20% claim 2 , or between about 10% and about 18% by weight of vinyl acetate.4. The multi-layer film of claim 2 , wherein the inner layer comprises a plastomer comprising propylene-ethylene or a derivative thereof.5. The multi-layer film of claim 1 , wherein the barrier layer comprises a blend of ethylene vinyl alcohol and an acid modified maleic anhydride grafted ethylene alpha olefin copolymer.6. The multi-layer film of claim 5 , wherein the ...

BIAXIALLY ORIENTED POLYPROPYLENE FILM

Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a stress at 5% elongation (F5) of the biaxially oriented polypropylene film at 23° C. is not lower than 40 MPa in a longitudinal direction and not lower than 160 MPa in a width direction, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction. 1. A biaxially oriented polypropylene film , wherein a stress at 5% elongation (F5) of the biaxially oriented polypropylene film at 23° C. is not lower than 40 MPa in a longitudinal direction and not lower than 160 MPa in a width direction , and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction.2. The biaxially oriented polypropylene film according to claim 1 , wherein a heat shrinkage rate of the biaxially oriented polypropylene film at 120° C. is not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction claim 1 , and the heat shrinkage rate at 120° C. in the longitudinal direction is lower than the heat shrinkage rate at 120° C. in the width direction.3. The biaxially oriented polypropylene film according to claim 1 , wherein a refractive index Ny in the width direction of the biaxially oriented polypropylene film is not lower than 1.5230 claim 1 , and ΔNy of the biaxially oriented polypropylene film is not lower than 0.0220.4. The biaxially oriented polypropylene film according to claim 1 , wherein the biaxially oriented polypropylene film has a haze of 5.0% or lower.5. The ...

Transparent films

The invention relates to an optically transparent polymer film or extrudate product made of a polymer composition comprising a semi-crystalline polyamide having a melting temperature of at least 270° C. or a blend of the semi-crystalline polyamide (A) and a second polymer (B), and optionally at least one additive, wherein the semi-crystalline polyamide (A) is present in an amount of more than 50 wt. %, relative to the total weight of the polymer composition, the polymer composition in the optically transparent polymer film or extrudate product has a melting temperature (Tm-C) in the range of 270-340° C., and wherein the film or a part of the extrudate product has a haze of less than 12% and a light transmittance, of at least 88% measured with the method according to ASTM D1003A.

Producing Method of Continuous Cylindrical Extruding Net and Equipment Thereof

A continuous extruding method of an elastomeric cylindrical mesh is provided with steps of: providing a thermoplastic elastomeric plastic for melting and mixing; and providing the melted thermoplastic elastomeric plastic from at least two concentric circles in opposite direction to form multiple thermoplastic elastomeric filaments, and the thermoplastic elastomeric filaments are fused at a site where overlapped to form the elastomeric cylindrical mesh. The extruding die head provided by the present invention is capable of continuously producing the mesh structure which could consider the relatively simple and low cost compared with the conventional production method. 1. A continuous extruding method of an elastomeric cylindrical mesh comprising steps of:providing a thermoplastic elastomeric plastic for melting and mixing; andproviding the melted thermoplastic elastomeric plastic from at least two concentric circles in opposite direction to form multiple thermoplastic elastomeric filaments, and the thermoplastic elastomeric filaments are fused at a site where overlapped to form the elastomeric cylindrical mesh.2. The method as claimed in claim 1 , wherein the elastomeric cylindrical mesh is further cooled and set.3. The method as claimed in claim 1 , wherein the elastomeric cylindrical mesh is further applied with an external force for pulling the site where the thermoplastic elastomeric filaments overlapped.4. A continuous extruding equipment of an elastomeric cylindrical mesh comprising:a mixing screw;a feeding tube;an extruding die head;a cooling unit;the mixing screw, the feeding tube, the extruding die head, and the cooling unit are set in order and connected by a melted fluid; whereinthe extruding die head comprises an outer output unit and an inner output unit in a concentric setting;the outer output unit and the inner output unit are rotated in the opposite direction;the outer output unit and the inner output unit each comprises multiple outer discharging ...

HEAT-SHRINKABLE POLYESTER FILM ROLL

The invention provides a heat-shrinkable polyester film roll containing a paper tube and a heat-shrinkable polyester film wound around the paper tube to form the heat-shrinkable polyester film roll, wherein (1) the film winding length is 2000-20000 m, (2) the film width is 400-2500 mm, (3) the film thickness is 5-30 μm, (4) unevenness in thickness in the film widthwise direction in a film roll surface layer part is 12% or less, (5) the paper tube has an inner diameter of 3 inches, a difference in clearance of the paper tube in a widthwise direction after removal of the film from the film roll is 0.5 mm or less, and a flat compressive strength of the paper tube after removal of the film is 1700 N/100 mm or more, and (6) the average value of winding hardness in the widthwise direction in the film roll surface layer part is 500-850. 1. A heat-shrinkable polyester film roll comprising:a paper tube,a heat-shrinkable polyester film having a shrinking rate in a main shrinking direction of the film after treated in hot water at 90° C. for 10 seconds of 40% or more, andthe film being wound around the paper tube to form the heat-shrinkable polyester film roll,wherein the heat-shrinkable polyester film and the film roll satisfy the following requirements (1) to (6):(1) a film winding length is 2000 m or more and 20000 m or less;(2) a film width is 400 mm or more and 2500 mm or less;(3) a film thickness is 5 μm or more and 30 μm or less;(4) unevenness in thickness in a film widthwise direction in a film roll surface layer part is 12% or less;(5) the paper tube has an inner diameter of 3 inches, a difference in clearance of the paper tube in a widthwise direction after removal of the film from the film roll is 0.5 mm or less, and a flat compressive strength of the paper tube after removal of the film is 1700 N/100 mm or more; and(6) an average value of winding hardness in a widthwise direction in the film roll surface layer part is 500 or more and 850 or less.2. The heat- ...

HIGH-POROSITY SEPARATOR FILM WITH COATING AND SHUT DOWN FUNCTION

The invention concerns a biaxially orientated, single- or multi-layered porous film which comprises at least one porous layer and this layer contains at least one propylene polymer and polyethylene; 133-. (canceled)35. The film as claimed in claim 34 , wherein the porosity is produced by transformation of β-crystalline polypropylene upon drawing the film.36. The film as claimed in claim 35 , wherein the β-nucleation agent is a calcium salt of pimelic acid and/or suberic acid and/or a nanoscale iron oxide.37. The film as claimed in claim 34 , wherein the density of the film is in the range 0.1 to 0.5 g/cm.38. The film as claimed in claim 34 , wherein the thickness of the film is 10 to 100 μm.39. The film as claimed in claim 34 , wherein the propylene polymers are not produced using metallocene catalysts.40. The film as claimed in claim 34 , wherein the polyethylene is present in quantities of at least 5% by weight with respect to the propylene polymers and/or propylene block copolymers present.41. The film as claimed in claim 34 , wherein the polyethylene is a HDPE or MDPE with a melting peak in the range 115° C. to 140° C.42. The film as claimed in claim 41 , wherein the HDPE has a MFI (50 N/190° C.) of more than 0.1 to 50 g/10 min measured using DIN 53 735 and a viscosity number claim 41 , measured using DIN 53 728 part 4 or ISO 1191 claim 41 , in the range 100 to 450 cm/g claim 41 , a density claim 41 , measured at 23° C. in accordance with DIN 53 479 claim 41 , method A or ISO 1183 claim 41 , in the range >0.94 to 0.97 g/cmand a melting point claim 41 , measured using DSC (maximum of melting curve claim 41 , heating rate 20° C./min) claim 41 , between 120° C. and 145° C.43. The film as claimed in claim 41 , wherein the MDPE has a MFI (50 N/190° C.) of more than 0.1 to 50 g/10 min claim 41 , measured using DIN 53 735 claim 41 , a density claim 41 , measured at 23° C. in accordance with DIN 53 479 claim 41 , method A or ISO 1183 claim 41 , in the range >0.925 to 0. ...

ARTICLE INCLUDING MICROPOROUS FILM AND METHOD OF MAKING THE SAME

The article includes at least a first layer having first and second major surfaces and a second layer adjacent the second major surface of the first layer. The first major surface of the first layer is at least a portion of a visible, outer surface of the article. At least a portion of the first layer is a see-through thermoplastic film that has a first color other than white. The second layer includes a microporous film having an opaque, microporous region and a nonporous region. When the opaque, microporous region and the nonporous region are seen through the first layer, they create an appearance on the outer surface of two different colors or two different shades of the same color. A method of making the article is also described. 1. An article comprising:a first layer having first and second major surfaces, wherein the first layer is a see-through thermoplastic film and has a first color other than white; anda second layer adjacent the second major surface of the first layer, wherein the second layer comprises a microporous thermoplastic film having an opaque, microporous region and a nonporous region,wherein the first major surface of the first layer is at least a portion of a visible, outer surface of the article, and wherein the opaque, microporous region and the nonporous region seen through the first layer create an appearance on the outer surface of two different colors or two different shades of the same color.2. The article of claim 1 , wherein the nonporous region is included in a pattern of nonporous regions claim 1 , which when seen through the first layer create the appearance on the outer surface of a pattern of two different colors or two different shades of the same color.3. The article of claim 1 , wherein the nonporous region is in the form of a number claim 1 , symbol claim 1 , picture claim 1 , geometric shape claim 1 , bar code claim 1 , an alphabetical letter claim 1 , or a combination thereof.4. The article of claim 1 , further comprising ...

HIGH PERFORMANCE COOLING SYSTEM

The present invention relates to an external cooling system for a molten film tube produced by a blown film tubular extrusion process, comprised of one or more enclosures with one or more respective cavities that directly receive a portion of cooling gas emanating from one or more associated cooling elements. Each enclosure includes a port containing a variable exhaust device and optional flow buffer, acting to maintain a pressure differential between the cavity and an adjacent inside volume of the molten film tube, adjustable to optimize molten film tube stability cooling element efficiency and spaced apart dimension between cooling elements. Additionally, at least one cooling element is provided, comprised of a divergent cooling element with a divergent cooling interface containing a cooling gas deflector spaced adjacent to the molten film tube and providing an expelled cooling gas. 1. An apparatus for cooling , the apparatus comprising:(a) a blown film die operable for producing a flow of a molten film tube;(b) a unidirectional cooling element for receiving the flow of the molten film tube, the unidirectional cooling element having a unidirectional cooling interface operable for expelling a cooling gas in a path with the flow of the molten film tube toward a first exit gap;(c) a divergent cooling element for receiving the flow of the molten film tube operably stacked adjacent the unidirectional cooling element, the divergent cooling element having a divergent cooling interface operable for expelling a cooling gas (i) in a path opposing the flow of the molten film tube toward a second exit gap and (ii) in a path with the flow of the molten film tube toward a third exit gap.2. The apparatus according to claim 1 , the apparatus further comprising a first stabilizer ring operably stacked adjacent the unidirectional cooling element between the unidirectional cooling element and the divergent cooling element claim 1 , and a second stabilizer ring operably stacked ...

Woven Irrigation Tubing, Apparatus and Method of Making Same

Woven irrigation tubing comprising a woven, extrusion coated & laminated tube formed of a high density polyethylene (HDPE) outer layer, a low density polyethylene (LDPE) middle layer and a linear low density polyethylene (LLDPE) inner layer. The finished tubing is treated for ultraviolet resistance. The tubing is tied off at a distal end with a proximal end connected to a pressurized irrigation source. Watering holes are created in the tubing at spaced intervals and the resulting water streams are directed into parallel plowed furrows. The tubing is completely recyclable. The tubing is formed by manufacturing tape for the woven outer tubing cover, stretching the tape along its length to strengthen it, weaving the outer layer from the tape, flattening the woven outer layer, extrusion coating each surface of the outer layer with LDPE, laminating the LLDPE inner layer to the LDPE, reversing and winding the tubing for storage and distribution. 1. An apparatus for making woven irrigation tubing , comprising:HDPE resin;an extruder for said HDPE resin;instruments to monitor pressure and flow rates for said extruder;a flat die for said extruder suitable for forming extruded sheets of HDPE resin;a quenching tank for cooling said extruded sheets of HDPE resin;a slitter for slitting said extruded sheets of HDPE resin into tape;a tentering frame machine for stretching said tape along its length to increase longitudinal tape strength of said tape;a first winding machine and storage bobbins for winding said tape onto said storage bobbins for further processing;loom unwind stations for positioning said wound storage bobbins prior to weaving;a circular loom for weaving said tape stored on said storage bobbins into a continuous woven seamless tube;a tubing flattener for flattening said woven seamless tube;a second winding machine for winding said flattened woven seamless tube onto a master storage roll;LDPE resin;LLDPE film;an extrusion coating laminating apparatus for coating a ...

BI-DIRECTIONALLY ORIENTED MULTILAYER FILM

The present invention relates to a multilayer film comprising: • an inner layer system comprising a first surface and a second surface; • a first skin layer bound to the inner layer system at the first surface of the inner layer system; and • a second skin layer bound to the inner layer system at the second surface of the inner layer system; wherein • the inner layer system comprises a first ethylene-based polymer; and • at least one of the first or the second skin layer(s) is a sealing layer and comprises a second ethylene-based polymer having a peak melting temperature Tof at least 10° C. below the Tof the first ethylene-based polymer, Tbeing determined as peak melting temperature in accordance with ASTM D3418 (2008); wherein the multilayer film is a bi-directionally oriented film wherein the orientation is introduced in the solid state. Such film allows for the production of a sealed package having a sufficiently high sealing strength at reduced sealing temperatures, also referred to as the seal initiation temperature. 1. A multilayer film comprising:an inner layer system comprising a first surface and a second surface;a first skin layer bound to the inner layer system at the first surface of the inner layer system; anda second skin layer bound to the inner layer system at the second surface of the inner layer system;whereinthe inner layer system comprises a first ethylene-based polymer; and{'sub': pm', 'pm', 'pm, 'at least one of the first or the second skin layer(s) is a sealing layer and comprises a second ethylene-based polymer having a peak melting temperature Tof at least 10° C. below the Tof the first ethylene-based polymer, Tbeing determined as peak melting temperature in accordance with ASTM D3418 (2008);'}wherein the multilayer film is a bi-directionally oriented film wherein the orientation is introduced in the solid state.2. The multilayer film according to claim 1 , wherein the first skin layer comprises the second ethylene-based polymer and wherein ...

BIAXIALLY ORIENTED POLYPROPYLENE FILM

The invention provides a biaxially oriented polypropylene film, wherein a relationship between a loop stiffness stress (S [mN]) in a longitudinal direction and a thickness (t [μm]) satisfies the formula S≥0.00020×t, a relationship between a loop stiffness stress (S [mN]) in a width direction and the thickness (t [μm]) satisfies the formula S≥0.0010×t, and a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction, a heat shrinkage rate of the biaxially oriented polypropylene film at 120° C. is not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction, and the heat shrinkage rate at 120° C. in the longitudinal direction is lower than the heat shrinkage rate at 120° C. in the width direction. 1. A biaxially oriented polypropylene film , wherein {'br': None, 'i': S≥', 't, 'sup': '3', '0.00020×,'}, 'a relationship between a loop stiffness stress (S [mN]) in a longitudinal direction and a thickness (t [μm]) satisfies the following formula,'} {'br': None, 'i': S≥', 't, 'sup': '3', '0.0010×, and'}, 'a relationship between a loop stiffness stress (S [mN]) in a width direction and the thickness (t [μm]) satisfies the following formula,'}a heat shrinkage rate of the biaxially oriented polypropylene film at 150° C. is not higher than 10% in the longitudinal direction and not higher than 30% in the width direction, a heat shrinkage rate of the biaxially oriented polypropylene film at 120° C. is not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction, and the heat shrinkage rate at 120° C. in the longitudinal direction is lower than the heat shrinkage rate at 120° C. in the width direction.2. The biaxially oriented polypropylene film according to claim 1 , wherein a refractive index Ny in the width direction of the biaxially oriented polypropylene film is not lower than 1.5230 ...

POLYESTER FILM WITH COATING

The invention relates to a transparent, single- or multilayer, biaxially oriented polyester film, having a barrier coating on at least one film surface, wherein 2. The film according to claim 1 , comprising particles claim 1 , preferably at a concentration below 0.5% by weight claim 1 , based on the total weight of the film claim 1 , and where particularly preferably the particles in a multilayer film are present in one or both outer layer(s).3. The film according to claim 1 , comprising three layers claim 1 , a base layer (B) and respectively an outer layer (A) and an outer layer (C) claim 1 , where the outer layer (A) has been applied on one of the sides of the base layer (B) and the outer layer (C) has been applied on the other side of the base layer (B).4. The film according to claim 3 , wherein the film having three layers has an ABC structure claim 3 , where the outer layer (C layer) opposite to the barrier coating (on the outer layer (A)) is a sealable layer.5. The film according to claim 4 , where the sealable layer is amorphous and at least 90% by weight thereof consists of a thermoplastic polyester claim 4 , this being a copolyester comprised of ethylene-glycol-derived monomer units and of terephthalic-acid-derived and isophthalic-acid-derived monomer units claim 4 , where the proportion of the isophthalic-acid-derived units claim 4 , based on the dicarboxylic-acid-derived units claim 4 , is preferably 10-30 mol %.6. The film according to claim 1 , wherein the average molar mass of the polyanion before neutralization is at least 10 000 g/mol.7. The film according to claim 1 , wherein the average molar mass of the polyethyleneimine is at least 25 000 g/mol.8. The film according to claim 1 , wherein the coating solution is an aqueous coating solution and comprises 3-30% by weight of solids.9. The film according to claim 1 , wherein the ratio by weight of the polyanion (before neutralization) to the polyethyleneimine is 90:10 to 50:50 claim 1 , preferably 80: ...

FILM THICKNESS GAUGE BY NEAR-INFRARED HYPERSPECRAL IMAGING

The present teachings include a method of measuring an entire film thickness. The method may include forming a polymeric film () and measuring the thickness of the film () with a camera () collecting spatial and spectral images of a plurality of points at one time. The camera may collect a line image from a line of the film. The camera may be a hyperspectral near-infrared camera. In analyzing raw data collected during the measuring step, fringes of the raw data may be corrected using a classical least squares analysis. 1. A method comprising steps of:a. obtaining a polymeric film, sheet, or plaque; andb. measuring a thickness of the film, sheet, or plaque;wherein the measuring step is performed using a camera collecting both spatial and spectral images of a plurality of points simultaneously.2. The method of claim 1 , wherein the camera collects a line image from a line of the film claim 1 , sheet claim 1 , or plaque.3. The method of claim 1 , wherein the film claim 1 , sheet or plaque has thickness of 2 mm or less.4. The method of claim 1 , wherein the camera collects light having a wavelength of from 780 nm or greater to 2500 nm.5. The method of claim 4 , wherein a light source emitting light having a wavelength of from 780 nm or greater to 2500 nm is positioned on an opposite side of the polymeric film claim 4 , sheet claim 4 , or plaque than the camera.6. The method of claim 5 , further comprising the step:forming the polymeric film using a blown film process.7. The method of claim 6 , wherein the blown film process comprises forming a bubble of film claim 6 , and wherein the measuring step is performed on the bubble to determine the thickness of the film forming the bubble.8. The method of claim 6 , wherein the blown film process comprises collapsing a bubble of film to produce a layflat claim 6 , and wherein the measuring step is performed on the layflat to determine the thickness of the layflat or one or more layers thereof. In general, the present teachings ...

Multilayer Film with Reversible Haze

The present disclosure provides a process. In an embodiment, the process includes elongating a multilayer film to a impart a haze value greater than 30% to the multilayer film. The multilayer film has at least two layers: (A) a core layer composed of an ethylene/α-olefin multi-block copolymer and (B) a first skin layer in contact with the core layer, the skin layer composed of an ethylene-based polymer. The process includes releasing the elongating force from the elongated multilayer film to form a hazed multilayer film having a haze value greater than 30%. The process includes stretching the hazed multilayer film to form a stretched multilayer film having a clarity value greater than 80%. The process includes relaxing the stretch force from the stretched multilayer film to form a relaxed multilayer film having a haze value greater than 30%.

UNIMODAL POLYETHYLENE COPOLYMER AND FILM THEREOF

A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer. 1. A unimodal ethylene-co-1-butene copolymer that , when in melted form at 190° C. , is characterized by a melt property space defined by a combination of shear thinning and melt elasticity properties , wherein the shear thinning property is defined according to equation 1 (Eq. 1): G′ (G″=3 ,000 Pa)<66.6*MFR5+630 (Eq. 1); and the melt elasticity property is defined according to equation 2 (Eq. 2): G′ (G″=3 ,000 Pa)<23.5*SH1000+1182 (Eq. 2); wherein < is less than; * is multiplication; / is division; = is equals; G′ (G″=3 ,000 Pa) is melt elasticity in Pascals (Pa) measured according to Melt Storage Modulus Test Method at loss modulus G″=3000 pascals; MFR5 is melt flow ratio I/I; Iis high-load melt index (HLMI) in grams per 10 minutes (g/10 min) measured according to ASTM D1238-13 (190° C. , 21.6 kg); Iis melt index in g/10 min measured according to ASTM D1238-13 (190° C. , 5.0 kg); SH1000=Eta0.126/Eta126; Eta0.126 is complex viscosity in Pascal-seconds (Pa-s) measured at 0.126 radian per second (rad/s) by Dynamic Mechanical Analysis Test Method; and Eta126 is complex viscosity Pa-s measured at 126 rad/s by the Dynamic Mechanical Analysis Test Method.2. The unimodal ethylene-co-1-butene copolymer of wherein the melt property space is further defined by any one of limitations (i) to (xii): (i) an Ifrom 13.0 to 25.0 g/10 min. claim 1 , measured according to ASTM D1238-13 (190° C. claim 1 , 21.6 kg); (ii) a MFR5 (“I/I”) from 20.0 to 27.0 claim 1 , measured according to ASTM D1238-13 (190° C. claim ...

High-Strength Separator

A separator for an electricity storage device has a cross-sectional crystal orientation of 0.85 or greater, and/or a method for producing the separator for an electricity storage device comprises a step of using a continuous mixer under conditions with a temperature of 20° C. to 70° C., a shear rate of 100 to 400,000 seconds −1 and a residence time of 1.0 seconds to 60 seconds, for mixing of polyethylene-containing polyolefin powder with a plasticizer to produce a mixed slurry, a step of extruding the mixed slurry and cooling it to solidification to process it into a cast sheet, and a step of biaxially stretching the cast sheet to an area increase factor of 20 to 200.

Diaphragm for alkaline water electrolysis, alkaline water electrolysis device, method for producing hydrogen, and method for producing diaphragm for alkaline water electrolysis

The diaphragm for alkaline water electrolysis according to the present invention comprises a porous polymer membrane, the porous polymer membrane comprising a polymer resin and hydrophilic inorganic particles. A porosity of the porous polymer membrane is 30% or more and 60% or less, average pore sizes at both surfaces of the porous polymer membrane is 0.5 μm or more and 2.0 μm or less, and a ratio of a mode particle size of the hydrophilic inorganic particles to the average pore size of the porous polymer membrane (mode particle size/average pore size) is 2.0 or more.

BIAXIALLY ORIENTED POLYPROPYLENE FILM

Provided is a biaxially oriented polypropylene film that has high stiffness, has excellent heat resistance at a high temperature of 150° C., easily maintains a bag shape when being made into a packaging bag, and has less pitch shift during printing or fewer wrinkles in a sealed portion when being heat-sealed. A biaxially oriented polypropylene film, wherein a half width of a peak derived from an oriented crystal in a width direction in azimuth dependence of a (110) plane of polypropylene α-type crystal obtained by wide-angle X-ray diffraction measurement is not larger than 27°, and a tan δ area in the width direction obtained from a ratio (E′E″) of a storage elastic modulus (E′) to a loss elastic modulus (E″) obtained by dynamic viscoelasticity measurement is not smaller than 0.2 and not larger than 0.4. 1. A biaxially oriented polypropylene film , wherein a half width of a peak derived from an oriented crystal in a width direction in azimuth dependence of a (110) plane of polypropylene αe crystal obtained by wide-angle X-ray diffraction measurement is not larger than 27° , and a tan δ area in the width direction obtained from a ratio (E′/E″) of a storage elastic modulus (E′) to a loss elastic modulus (E″) obtained by dynamic viscoelasticity measurement is not smaller than 0.2 and not larger than 0.4.2. The biaxially oriented polypropylene film according to claim 1 , wherein a heat shrinkage rate of the biaxially oriented polypropylene film at 120° C. is not higher than 2.0% in the longitudinal direction and not higher than 5.0% in the width direction claim 1 , and the heat shrinkage rate at 120° C. in the longitudinal direction is lower than the heat shrinkage rate at 120° C. in the width direction.3. The biaxially oriented polypropylene film according to claim 1 , wherein a refractive index Ny in the width direction of the biaxially oriented polypropylene film is not lower than 1.5230 claim 1 , and ΔNy of the biaxially oriented polypropylene film is not lower than ...

Pearl paper and method for manufacturing the same

A pearl paper and a method for manufacturing the same are provided. The pearl paper includes a first surface layer, a second surface layer, and a lightweight layer. The lightweight layer is disposed between the first surface layer and the second surface layer. The first surface layer is a polypropylene layer. The second surface layer is a polypropylene layer. The lightweight layer has a continuous phase part and a dispersed phase part. A material of the continuous phase part contains polypropylene and a material of the polymer dispersed phase part contains polyester.

Biaxially stretched polyester film, method of producing same, and solar cell module

Provided is a biaxially stretched polyester film in which a thickness is from 200 μm to 800 μm, fracture strength in both a longitudinal stretching direction and a lateral stretching direction is from 180 MPa to 300 MPa, an internal haze (Hin) is from 0.3% to 20%, a difference (ΔH=Hsur−Hin) between an external haze (Hsur) and the internal haze (Hin) is 2% or less, and an intrinsic viscosity is from 0.68 to 0.90, a method of the biaxially stretched polyester film, a solar cell power generation module using the biaxially stretched polyester film.

Extruded plastic film filled with metal particles, method of production and uses thereof

The present invention relates to a plastic film obtained by (co)extrusion or by a multilayer extrusion process. The purpose of the invention is to supply a plastic film having useful properties, in particular of thermal behaviour, adhesion, linear tearability, and having a reduced production cost. This film contains lamellar particles based on at least one metal and/or at least one metal oxide. It is obtained by the extrusion of a raw material constituted entirely or partly by a ground material from at least one coated film comprising at least one polyester and/or polyolefin film and at least one coating film based on at least one metal and/or at least one metal oxide. The invention also relates to a method of manufacture of the raw material of the plastic film according to the invention, a method of manufacture of said plastic film as well as the uses of said film. Application in the field of packaging, decoration and heat treatments.

Copolymers and films thereof

Copolymers of ethylene and α-olefins having C7-C12 carbon atoms having: (a) a density (D) in the range 0.900-0.940 g/cm 3 , (b) a melt index MI 2 (2.16 kg, 190° C.) in the range of 0.01-50 g/10 min, (c) a melt elastic modulus G′ (G″=500 Pa) in the range 20 to 150 Pa, and (d) a tear strength (MD) of ≧220 g, a tear strength (TD) of ≧470 g, and a Dart Drop Impact (DDI) of ≧1800 g of a blown film having a thickness of 25 μm produced from the copolymer; where MD is referred to the machine direction and TD is the transverse direction of the blown film are suitably prepared in the gas phase by use of a supported metallocene catalyst system. Particularly suitable are copolymers of ethylene and 1-octene and the resultant blown films show improved processability and exhibit an improved balance of film properties of dart impact and tear strength.

PTFE LAYERS AND METHODS OF MANUFACTURING

Thin PTFE layers are described having little or no node and fibril microstructure and methods of manufacturing PTFE layers are disclosed that allow for controllable permeability and porosity of the layers. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device. 1. A composite film comprising: a material comprising polytetrafluoroethylene; and', 'a closed cell microstructure with a plurality of interconnected high-density regions of polytetrafluoroethylene, the closed cell microstructure being substantially free of a node and fibril microstructure between the high-density regions; and, 'a first layer comprisinga second layer of expanded polytetrafluoroethylene having a substantial node and fibril microstructure secured to the first layer, the first layer and the second layer defining an inflatable space therebetween.2. The composite film of claim 1 , wherein the first layer has a thickness from 0.00005 inch to 0.005 inch.3. The composite of claim 1 , wherein the first layer has substantially no fluid permeability with a Gurley Number of greater than 12 hours for 100 cc of air at a pressure of 12.4 cm of water or a limited fluid permeability with a Gurley Number of greater than 1 claim 1 ,500 seconds for 100 cc of air at a pressure of 12.4 cm of water.4. The composite film of claim 1 , wherein the material comprises a copolymer of polytetrafluoroethylene.5. The composite film of claim 4 , wherein the copolymer of polytetrafluoroethylene is a fluorinated copolymer of polytetrafluoroethylene.6. The composite film of claim 4 , wherein the copolymer of polytetrafluoroethylene is perfluoropropylvinylether-modifiedpolytetrafluoroethylene.7. The composite film of claim 4 , wherein the copolymer of polytetrafluroethylene is about 2% or less of the mass of the material.8. A tubular structure comprising:a composite film having a first layer and a second layer, a material comprising polytetrafluoroethylene; and', 'a ...

BIAXIALLY STRETCHED POLYESTER FILM AND METHOD FOR PRODUCING THE SAME

A biaxially stretched polyester film and a method for producing the same are provided. The biaxially stretched polyester film includes a polyester resin base layer and a matte layer. The polyester resin base layer includes: (1) 50 to 95 wt % of a polyester resin base material, and an intrinsic viscosity of the polyester resin base material being between 0.5 and 0.8 dL/g; and (2) 0.01 to 5 wt % of a high viscosity polyester resin material, and an intrinsic viscosity of the high viscosity polyester resin material being between 0.9 and 1.1 dL/g. The matte layer includes: (1) 50 to 95 wt % of a polyester resin matrix material, and an intrinsic viscosity of the polyester resin matrix material being between 0.5 and 0.8 dL/g; and (2) 0.3 to 40 wt % of a plurality of filler particles, and the filler particles having an average particle size of between 0.15 μm and 10 μm. 1. A biaxially stretched polyester film , comprising: (1) a content of the polyester resin base material is between 50 wt % and 95 wt %, wherein an intrinsic viscosity of the polyester resin base material is between 0.5 dL/g and 0.8 dL/g; and', '(2) a content of the high viscosity polyester resin material is between 0.01 wt % and 5 wt %, wherein the high viscosity polyester resin material is dispersed in the polyester resin base material, and an intrinsic viscosity of the high viscosity polyester resin material is between 0.9 dL/g and 1.1 dL/g; and, 'a polyester resin base layer; wherein the polyester resin base layer includes: a polyester resin base material and a high viscosity polyester resin material, and based on the total weight of the polyester resin base layer being 100% wt,'} (1) a content of the polyester resin matrix material is between 50 wt % and 95 wt %, wherein an intrinsic viscosity of the polyester resin matrix material is between 0.5 dL/g and 0.8 dL/g; and', '(2) a content of the plurality of filler particles is between 0.3 wt % and 40 wt %, wherein the plurality of filler particles are ...

Method of manufacturing prismatic type battery case

Provided are extruding a raw material into a prismatic hollow material having both open ends (Step (a)), drawing the hollow material a plurality of times so as to have a desired thickness (Step (b)), manufacturing a main body by cutting the drawn hollow material to a predetermined length (Step (c)), forming a sealing cover having a shape corresponding to an open end of the main body (Step (d)), and adhering the sealing cover to the open end of the main body (Step (e)).

Environmentally friendly dry cleaning bags and methods of making same

A method of manufacturing a biodegradable dry cleaning bag is disclosed, the method including loading an environmentally friendly slurry into a hopper, extruding the environmentally friendly slurry, passing the environmentally friendly slurry through a die, inflating the environmentally friendly slurry into a cylindrical shape, thereby creating a cylindrical member, passing the cylindrical member over a first roller, and rolling the cylindrical member onto a roll.

METHOD FOR CONTROLLING FILM PRODUCTION

The invention relates to a method () for controlling a film production in which at least one film is produced depending on at least one specific recipe information (R), where the following steps are performed: 1. A method for controlling film production , in which at least one film is produced depending on at least one specific recipe information , where the following steps are performed:determining different fingerprints, the fingerprints characterizing different method executions for producing a film,determining in each case at least one result information for the respective fingerprint, the result information being specific for at least one product property of the produced film,storing the respective fingerprints and result information as data in a data system so that the data are provided as an evaluation basis for a control of at least one subsequent method execution.14. A control system for controlling film production , in which at least one film can be produced depending on at least one specific recipe information , with:at least one provision unit for providing different fingerprints, the fingerprints characterizing different method executions for producing a film, and for providing in each case at least one result information for the respective fingerprint, the result information being specific for at least one product property of the produced film,a processing unit for storing the respective fingerprints and result information as data in a data system, so that the data can be made available as an evaluation basis for the control of at least one subsequent method execution.16. A computer program product for controlling a film production in which at least one film is produced in dependence on at least one specific recipe information , the computer program product being adapted to be processed by a processing apparatus so that the following steps are performed:providing different fingerprint, the fingerprints characterizing different method executions for ...

PROCESS FOR PRODUCING PIPE BY BIAXIAL ELONGATION

The invention relates to a process for producing a biaxially oriented pipe, comprising the steps of: a) forming a polyethylene composition into a tube, wherein the polyethylene composition comprises a bimodal or a multimodal high-density polyethylene (HDPE) and b) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe, wherein step b) is performed at an axial draw ratio of 1.1 to 3.2 and an average hoop draw ratio of 1.1 to 2.0 or step b) is performed at an axial draw ratio of 1.1 to 1.9 and an average hoop draw ratio of 1.1 to 2.0, and wherein step b) is performed at a drawing temperature which is 1 to 30° C. lower than the melting point of the polyethylene composition. 1. A process for producing a biaxially oriented pipe , comprising:a) forming a polyethylene composition into a tube, wherein the polyethylene composition comprises a bimodal or a multimodal high-density polyethylene (HDPE), andb) stretching the tube of step a) in the axial direction and in the peripheral direction to obtain the biaxially oriented pipe,wherein step b) is performed at an axial draw ratio of 1.1 to 3.2 and an average hoop draw ratio of 1.1 to 2.0 and the obtained biaxially oriented pipe has an outer diameter of at least 60 mm and a wall thickness of at least 5.5 mm, orstep b) is performed at an axial draw ratio of 1.1 to 1.9 and an average hoop draw ratio of 1.1 to 2.0 and the obtained biaxially oriented pipe has an outer diameter of less than 60 mm, andwherein step b) is performed at a drawing temperature which is 1 to 30° C. lower than the melting point of the polyethylene composition.2. The process according to claim 1 , wherein the outer diameter of the biaxially oriented pipe is at least 60 mm and the axial draw ratio is at least 1.2 and/or at most 3.0.3. The process according to claim 1 , wherein the outer diameter of the biaxially oriented pipe is 60 to 150 mm and a wall thickness of 5.5 to 15 mm.4. The process ...

Hydrolysis resistant polyester film

The use of titanium dioxide particles coated by an organic coating for increasing the hydrolysis resistance of an oriented polyester film, particularly wherein the organic coating does not comprise or is not derived from a silane, and particularly wherein the organic coating is selected from an organophosphorus compound and a polymeric organic coating; and oriented polyester films comprising such titanium dioxide particles coated byan organic coating; and photovoltaic cells comprising such films.

SOLAR-REACTIVE MULCH FILM

A solar reactive mulch film comprising one or more layers of heat shrink material pre-strained at a predetermined temperature and tension. Immediately cooling the pre-strained layers retains molecular deformation stresses in the material which facilitate shrinkage but not expansion on exposure to solar radiation. The mulch film adapted to be laid over longitudinal growing beds and held tautly by burying its side edges in soil. Exposure of uncovered portions of film to solar radiation causes shrinkage in one or more directions whereby in combination with the weight of the soil holding it down, maintains tautness of the mulch over a growing period. Methods of manufacture and use of the same. 120-. (canceled)21. A method of creating a solar-reactive agricultural mulch film , comprising:heating one or more polymers beyond a melting temperature of each polymer to produce one or more melted polymers, wherein one or more of the polymers is a linear low density polyethylene (LLDPE) and/or a metallocene linear low density polyethylene (mLLDEP) having dispersed therein carbon black particles in an amount that ranges between 2% and 8% by weight;extruding one or more of the melted polymers to produce a film that includes one or more layers of LLDPE and/or mLLDPE having dispersed therein the carbon black particles;heating the film to a stretching temperature;stretching, at the stretching temperature, the film in a longitudinal direction beyond a yield point of each of one or more of the layers of LLDPE and/or mLLDPE such that main chain molecules of LLDPE and/or mLLDPE and/or side branched molecules of LLDPE and/or mLLDPE in each of the one more layers of LLDPE and/or mLLDPE are elongated in the longitudinal direction;cooling the stretched film;maintaining a stretching tension throughout the stretched film while cooling the stretched film such that resultant plastic deformation stresses, resulting from stretching beyond the yield point, are retained and each of the one or more ...

Multilayer Structure, and Packaging Material for Retort Using Same

The present invention relates to a multilayer structure at least an outer layer and an inner layer which contain a polypropylene resin as a main component, a barrier resin layer containing an ethylene-vinyl alcohol copolymer as a main component, and a metal deposited layer containing aluminum as a main component; a packaging material for a retort therewith; a method for recovering the multilayer structure; and a recovered composition comprising a recovered material of the multilayer structure. There is provided a multilayer structure exhibiting excellent recyclability and excellent appearance, gas barrier ability and shading performance both before and after retorting treatment, and a packaging material for a retort therewith. 1. A four or more layered multilayer structure comprising at least an outer layer (A) containing a polypropylene resin (a) as a main component , an inner layer (B) containing a polypropylene resin (b) as a main component , a barrier resin layer (C) containing an ethylene-vinyl alcohol copolymer (c) as a main component , and a metal deposited layer (D) containing aluminum as a main component , whereinthe barrier resin layer (C) and the metal deposited layer (D) are positioned between the outer layer (A) and the inner layer (B);the total thickness is 200 μm or less;the polypropylene resin (a) and the polypropylene resin (b) have a melting point of 140° C. or more and less than 170° C., respectively;the ethylene-vinyl alcohol copolymer (c) has an ethylene unit content of 15 to 60 mol % and a saponification degree of 85 mol % or more; andthe multilayer structure contains neither a layer containing a resin having a melting point of less than 140° C. as a main component, a layer containing a resin having a melting point of 240° C. or more, nor a metal layer having a thickness of 1 μm or more.2. The multilayer structure as claimed in claim 1 , wherein the barrier resin layer (C) and the metal deposited layer (D) are adjacent to each other.3. The ...

C2C3 Random Copolymer

New CCrandom copolymers, which combine low sealing initiation temperature (SIT), high hot-tack, low C6-solubles, good optical properties and an improved stiffness/impact balance, which are particularly suited for preparing blown films. The present invention is furthermore related to the manufacture of said copolymers and to their use, as well as to the blown films comprising such CCrandom copolymers. 1. A CCrandom copolymer (A) consisting of (i) an ethylene content in the range of from 2.0 to less than 5.5 wt % and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.5 to 5.0 g/10 min and'}], '50.0 to 85.0 wt % of polymer fraction (A-1) having'} (i) an ethylene content in the range of from 5.5 to 10.0 wt % and', {'sub': '2', '(ii) a melt flow rate MFR(230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.1 to 3.0 g/10 min,'}], '15.0 to 50.0 wt % of polymer fraction (A-2) having'}{'sub': 2', '2, 'wherein the melt flow rate MFR(230° C./2.16 kg) of polymer fraction (A-2) is lower than the MFR(230° C./2.16 kg) of polymer fraction (A-1), and'}{'sub': 2', '3, 'wherein the CCrandom copolymer has'}(a) a total ethylene content in the range of from 3.0 to 7.5 wt %;(b) a melt flow rate MFR2 (230° C./2.16 kg) measured according to ISO 1133 in the range of from 0.5 to 5.0 g/10 min and(c) a melting temperature Tm as determined by DSC according to ISO 11357 of from 110° C. to 135° C.2. The CCrandom copolymer according to claim 1 , wherein the CCrandom copolymer (A) has an amount of hexane solubles (C6 solubles claim 1 , FDA) measured on a 100 μm thick blown film according to FDA 177.1520 in the range of from 0.1 to 2.0 wt %.3. The CCrandom copolymer composition according to claim 1 , wherein the CCrandom copolymer (A) is obtained in the presence of a metallocene catalyst.5. The process according to claim 4 , wherein as cocatalyst (ii) a cocatalyst system comprising a boron containing cocatalyst and an ...

Touch fastener and method of manufacturing the same

There is provided a touch fastener that has high followability to the relative movement of portions to be engaged and does not easily separate from a mating member, and thus is usable in a wider range of applications. In the touch fastener, all the elements, that is, first strands, second strands, and engagement elements are formed of a thermoplastic elastomer. Further, the plurality of first strands and the plurality of second strands are disposed to intersect with each other, and consequently, hole portions each surrounded by the two adjacent first strands and the two adjacent second strands are provided. Accordingly, it has a high elastic function, easily stretches, and has high followability to the relative movement of portions to be engaged.

Multilayer structures and articles comprising the same

Embodiments of the present invention relate to multilayer structures and articles formed therefrom. In one aspect, a multilayer structure comprises (a) a biaxially oriented polyethylene film comprising a linear low density polyethylene having a density of 0.910 to 0.940 g/cm 3 , wherein the ultimate elongation in the machine direction of the biaxially oriented polyethylene film is at least 2 times greater than the ultimate elongation in the cross direction, and wherein the ultimate tensile strength of the biaxially oriented polyethylene film is at least 60 MPa in at least one of the machine direction and the cross direction; (b) an adhesive layer; and (c) a sealant film, wherein the ultimate elongation of the sealant film is at least 300% in at least one of the machine direction and the cross direction, wherein the ultimate tensile strength of the sealant film is less than 50 MPa in at least one of the machine direction and the cross direction, and wherein the sealant film has a heat seal initiation temperature of 105 ° Cor less; wherein the sealant film is laminated to the biaxially oriented polyethylene film by the adhesive. In some embodiments, the sealant film comprises at least one layer comprising at least 30 percent by weight of a polyolefin plastomer, a polyolefin elastomer, an ultra low density polyethylene, an ethylene acetate copolymer, an ethylene acrylic acid copolymer, or an ethylene acrylate copolymer.

Optical layered body, polarizer, method for producing polarizer, image display device, method for producing image display device, and method for improving visibility of image display device

The present invention provides a method for improving visibility of an image display device which is capable of providing an image display device excellent in anti-reflection properties and bright-field contrast even using an optical layered body including a light-transmitting substrate having in-plane birefringence, such as a polyester film. The method of the present invention is a method for improving visibility of an image display device that has an optical layered body including a light-transmitting substrate having in-plane birefringence and an optical functional layer disposed on one surface of the substrate. The method includes the step of disposing the optical layered body such that the slow axis showing a greater refractive index of the light-transmitting substrate is in parallel with the vertical direction of a display screen of the image display device.

Method and system for making a plastic film

A plastic film of a thermoplastic synthetic resin is made in a film-making system by extrusion from a die of an extruder. First the plastic is melted and extruded from the die as a tube or web that is, typically after cooling and stretching, formed into a package. At least one reference parameter is provided, and, during continuous operation of the system, two input parameters different from the reference parameter are measured by respective measuring devices An output is determined from these reference parameters and is compared with the reference parameter.

POLYMER/EXFOLIATED NANO-COMPOSITE FILMS WITH SUPERIOR MECHANICAL PROPERTIES

Nano-composite films and methods for their fabrication. The nano-composite films include a polymer matrix (e.g., polyethylene, polypropylene, or the like) and a filler capable of exfoliation such as graphene or hexagonal boron nitride (e.g., TrGO). The filler provides reinforcement, increasing tensile strength, Young's modulus, or both for the resulting nano-composite film, as compared to what it would be without the filler. The nano-composite film may have a specific tensile strength that is greater than 1 GPa/g/cm, a specific Young's modulus that is greater than 100 GPa/g/ccm, or both. Tensile strength and modulus values of up to 3.7 GPa/g/cmand 125 GPa/g/cm, respectively, have been demonstrated. The film maybe formed by combining powdered filler and polymer matrix powder in a solvent (e.g.,decalin), high-shear extruding the resulting solution to disentangle the polymer chains and exfoliate the filler, freezing the solution to form a solid film, and then drawing the film. 1. A nano-composite film comprising:a polymer matrix;an exfoliated filler disposed within the polymer matrix;{'sup': 3', '3, "wherein the nano-composite film has a specific tensile strength that is greater than 1 GPa/g/cm, a specific Young's modulus that is greater than 100 GPa/g/cm, or both."}2. A nano-composite film as recited in claim 1 , wherein the polymer matrix comprises polyethylene.3. A nano-composite film as recited in claim 1 , wherein the filler comprises one or more of graphene or hexagonal boron nitride (h-BN).4. A nano-composite film as recited in claim 1 , wherein filler comprises one or more of a thermally reduced graphene oxide claim 1 , a chemically reduced graphene oxide claim 1 , or a functionalized graphene oxide.5. A nano-composite film as recited in claim 1 , wherein the exfoliated filler is present in the nano-composite film in an amount of up to 1% by weight.6. A nano-composite film as recited in claim 1 , wherein the exfoliated filler is present in the nano-composite ...

QUANTUM-DOT FILM AND THE METHOD TO MAKE THE SAME

The present invention discloses a quantum-dot film, wherein the quantum-dot film comprises a binder and a plurality of quantum dots dispersed in the binder, wherein the plurality of quantum dots are capable of being water-resistant and oxygen-resistant. 1. A quantum-dot film comprising:a quantum-dot layer comprising a binder and a plurality of quantum dots dispersed in the binder, wherein the plurality of quantum dots are capable of being water-resistant and oxygen-resistant.2. The quantum-dot film according to claim 1 , wherein there is no barrier layer disposed over the quantum-dot layer for protecting the plurality of quantum dots from water or oxygen.3. The quantum-dot film according to claim 1 , wherein the quantum-dot layer further comprises a plurality of diffusing particles.4. The quantum-dot film according to claim 1 , wherein the binder comprises PET (polyethylene terephthalate).5. The quantum-dot film according to claim 1 , wherein the concentration of the quantum dots in the quantum-dot layer is 0.05-20%.6. The quantum-dot film according to claim 1 , wherein the concentration of the quantum dots in the quantum-dot layer is 0.05-8%.7. The quantum-dot film according to claim 1 , wherein the thickness of the quantum-dot film is in a range of 25-350 um.8. The quantum-dot film according to claim 1 , wherein the binder comprises at least one of the following: PET (polyethylene terephthalate) claim 1 , PEN (polyethylene naphtholate) claim 1 , PAR (polyacrylate) claim 1 , PC (polycarbonates) and TAC (cellulose triacetate).9. The quantum-dot film according to claim 1 , wherein the quantum-dot layer has a first major surface comprising a structured surface.10. An optical film comprising:a plurality of quantum dots dispersed in the optical film, wherein the plurality of quantum dots are capable of being water-resistant and oxygen-resistant.11. The optical film according to claim 10 , wherein there is no barrier layer disposed over the optical film for protecting ...

New or improved microporous membranes, battery separators, coated separators, batteries, and related methods

This application is directed to new and/or improved MD and/or TD stretched and optionally calendered membranes, separators, base films, microporous membranes, battery separators including said separator, base film or membrane, batteries including said separator, and/or methods for making and/or using such membranes, separators, base films, microporous membranes, battery separators and/or batteries. For example, new and/or improved methods for making microporous membranes, and battery separators including the same, that have a better balance of desirable properties than prior microporous membranes and battery separators. The methods disclosed herein comprise the following steps: 1.) obtaining a non-porous membrane precursor; 2.) forming a porous biaxially-stretched membrane precursor from the non-porous membrane precursor; 3.) performing at least one of (a) calendering, (b) an additional machine direction (MD) stretching, (c) an additional transverse direction (TD) stretching, and (d) a pore-filling on the porous biaxially stretched precursor to form the final microporous membrane. The microporous membranes or battery separators described herein may have the following desirable balance of properties, prior to application of any coating: a TD tensile strength greater than 200 or 250 kg/cm2, a puncture strength greater than 200, 250, 300, or 400 gf, and a JIS Gurley greater than 20 or 50 s.

STRETCHING APPARATUS AND PARTS REPLACEMENT METHOD OF STRETCHING APPARATUS

A film stretching apparatus includes: a pair of first and second link devices configured to be able to carry and stretch a film and each composed of a plurality of links coupled to form an endless chain; a heat treatment unit configured to cover a central portion of the first and second link devices and perform a heat treatment to the film; a sprocket (first link drive mechanism) arranged outside the heat treatment unit and on an inlet side of the film and configured to drive the plurality of links; a sprocket (second link drive mechanism) arranged outside the heat treatment unit and on an outlet side of the film and configured to drive the plurality of links; and a sprocket (link adjustment mechanism) arranged outside the heat treatment unit and on the outlet side of the film and configured to reduce a pitch of the plurality of links. 1. A film stretching apparatus comprising:a pair of link devices configured to be able to carry and stretch a film and each composed of a plurality of links coupled to form an endless chain;a heat treatment unit configured to cover a central portion of the pair of link devices and perform a heat treatment to the film;a first link drive mechanism arranged outside the heat treatment unit and on an inlet side of the film and configured to drive the plurality of links;a second link drive mechanism arranged outside the heat treatment unit and on an outlet side of the film and configured to drive the plurality of links; anda link adjustment mechanism arranged outside the heat treatment unit and on the outlet side of the film and configured to reduce a pitch of the plurality of links.2. The stretching apparatus according to claim 1 ,wherein each of the pair of link devices has a film side facing the film and a return side located opposite to the film side, andwherein the link adjustment mechanism is located between the second link drive mechanism and the central portion of the link device and on the return side in a conveying direction of ...

POLYESTER FILM AND PREPERATION METHOD THEREOF

A polyester-based film having excellent scratch resistance, durability, transparency, and visibility and a process for preparing the same. The polyester-based film comprises a base layer and a coating layer on at least one side of the base layer. The light passage according to Relationship 1 is 91% or more, or the total transmittance for light of 380 nm to 780 nm is 92% or more, it has excellent optical properties, durability, visibility, and reliability. Thus, it can be applied to display devices such as smartphones, tablet PCs, and laptops. In addition, in the polyester-based film according to an embodiment, the strain with respect to tensile load satisfies a specific range, whereby it is possible to achieve the flexibility that hardly causes deformation even when a certain load is maintained for a long period of time. Thus, it can be applied to flexible display devices, particularly, foldable display devices. 1. A polyester-based film , which satisfies the following Relationship 2 in a first direction in the plane:{'br': None, 'i': S', '−S, 'sub': 1', '2, '1.3≤||≤3.1\u2003\u2003[Relationship 2]'}{'sub': 1', '1%', '2%', '1%', '2%, 'in Relationship 2, Sis the final tensile rate (%) after Nis maintained for 20 minutes, and S2 is the final tensile rate (%) after Nis maintained for 20 minutes, wherein Nis the load that stretches the polyester-based film by 1% in the first direction, and Nis the load that stretches the polyester-based film by 2% in the first direction.'}2. The polyester-based film of claim 1 , which satisfies the following Relationship 3 in a second direction that is perpendicular to the first direction:{'br': None, 'i': S', '−S, 'sub': 3', '4, '0.5≤||≤5.2\u2003\u2003[Relationship 3]'}{'sub': 3', '1%', '4', '2%', '1%', '2%, 'in Relationship 3, Sis the final tensile rate (%) after Nis maintained for 20 minutes, and Sis the final tensile rate (%) after Nis maintained for 20 minutes, wherein Nis the load that stretches the polyester-based film by 1% in ...

EXTRUDABLE POLYMER COMPOSITES WITH MEMBRANE BARRIER PROPERTIES

The present disclosure generally relates to extrusion die systems. In particular, the present disclosure relates to the cyclical extrusion of materials to generate small sized grain features, generally in the range of nanosized grain features, in a tubular or profile shape, in which the individual nanolayers possess pores and/or polymer crystals oriented parallel to the extrusion flow direction and including products with enhanced permeation properties. 114-. (canceled)15. A transport device comprising an extruded product with 2-10 ,000 micro or nano-polymer layers in tubular or profile shapes , wherein the extruded polymer or a component of the polymer comprise lamellar crystals aligned along the axis of extrusion.16. The transport device according to claim 15 , where the transport device transports water.17. The transport device according to claim 15 , wherein the transport device transports alcohol.18. The transport device according to claim 15 , wherein the transport device transports hydrocarbons.19. The transport device according to claim 15 , wherein the transport device transports blood.20. The transport device according to claim 15 , wherein the extruded product includes PET.21. The transport device according to claim 15 , wherein the extruded product includes EVOH.22. The transport device according to claim 15 , wherein the extruded product includes PA.23. The transport device according to claim 15 , wherein the extruded product includes PEO. This application is a continuation application of U.S. patent application Ser. No. 14/244,843, titled “EXTRUDABLE POLYMER COMPOSITES WITH MEMBRANE BARRIER PROPERTIES” and filed on 3 Apr. 2014, which claims benefit to U.S. provisional application 61/807,888 entitled “EXTRUDABLE POLYMER COMPOSITES WITH MEMBRANE BARRIER PROPERTIES” and filed on 3 Apr. 2013, the disclosure of which is incorporated herein by reference in its entirety.The present disclosure generally relates to extrusion die systems. In particular, the ...

ADHESIVE ARTICLES COMPRISING POLYLACTIC ACID POLYMER FILM AND METHOD OF MAKING

A method of making an adhesive article is described comprising melt extruding a core film layer comprising a comport comprising at least 50% of a polylactic acid polymer. The method further comprises melt extruding an adhesive layer on a major surface of the core film layer such that regions of interdiffusion are present between the core film layer and adhesive layer. The adhesive layer may comprise C1-C10 (meth)acrylic acid or ester thereof, vinyl acetate, ethylene vinyl acetate, hydrolysed polyvinyl alcohol and combinations thereof. The adhesive layer may also be a pressure sensitive adhesive. The method further comprises melt extruding a release film layer on an opposing major surface of the core film layer. The layers are sequentially extruded or co-extruded and can be uniaxially or biaxially oriented. Articles comprising a core film layer comprising a composition comprising at least 50% of a polylactic acid polymer and an adhesive layer disposed on a major surface of the core layer are also described. 1. A method of making an adhesive article comprisingmelt extruding a core film layer comprising a composition comprising at least 50% of a polylactic acid polymer,melt extruding an adhesive layer on a major surface of the core film layer; wherein the adhesive layer comprises moieties that are miscible in the composition of the core layer such that regions of interdiffusion are present between the core film layer and adhesive layer, andoptionally melt extruding a release film layer on an opposing major surface of the core film layer.2. The method of wherein the layers are sequentially melt extruded or coextruded.3. The method of further comprising uniaxially or biaxially orienting the film layers.4. The method of further comprising heat setting the oriented film layers.5. The method of wherein the moieties of the adhesive layer comprise polymerized units of a C-C(meth)acrylic acid or ester thereof claim 1 , vinyl acetate claim 1 , ethylene vinyl acetate claim 1 , ...

PIPE WITH AN OUTER WRAP

This disclosure relates generally to corrugated pipe, and more particularly to corrugated pipe with an outer wrap. In one embodiment, a pipe includes an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests, separated by corrugation valleys. The pipe also includes an outer wrap applied to the outer wall. The outer wrap may include fibers and plastic. The outer wrap may span the corrugation crests producing a smooth outer surface. 126-. (canceled)27. A pipe , comprising:an axially extended bore defined by a corrugated outer wall having axially adjacent, outwardly-extending corrugation crests connected by corrugation valleys, the corrugation crests and valleys forming a continuous cross-section;an outer wrap applied to the outer wall, the outer wrap spanning the corrugation crests producing a smooth outer surface;a bell at a first end of the bore; anda spigot at a second end of the bore, wherein the outer wrap spans at least between the bell and the spigot.28. The pipe of claim 27 , wherein the spigot comprises a small outer diameter than an outer diameter of the bell.29. The pipe of claim 27 , wherein the bell comprises a proud bell having a larger outer diameter than the outer diameter of the bore.30. The pipe of claim 27 , wherein the bell comprises an integrated bell.31. The pipe of claim 27 , wherein the outer wrap completely covers the bell and the spigot.32. The pipe of claim 27 , wherein the outer wrap comprises fibers and plastic.33. The pipe of claim 32 , wherein the fiber comprises continuous strand fiberglass.34. The pipe of claim 32 , wherein the fiber comprises continuous strand carbon fiber.35. The pipe of claim 32 , wherein the fiber comprises short strands of fiberglass.36. The pipe of claim 35 , wherein the short strands of fiberglass have a length ranging from about 0.25 inches to about 1 inch.37. A pipe claim 35 , comprising:an axially extended bore defined by a corrugated outer ...

Polyester composition, electronic device, and method of forming film

Disclosed is a method for manufacturing a film. 50 wt % to 85 wt % of a first polyester and 50 wt % to 15 wt % of a second polyester are dried and mixed to form a mixture. The first polyester is polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or combinations thereof. The second polyester is copolymerized of 1 part by mole of terephthalic acid, m parts by mole of 1,4-cyclohexanedimethanol (1,4-CHDM), n parts by mole of 1,3-cyclohexanedimethanol (1,3-CHDM), and o parts by mole of ethylene glycol (EG). m+n+o=1, 0≦o≦0.4, 0.6≦m+n≦1, and 0.06≦n/m≦1.31. The mixture is melted and blended to form a polyester composition, which is extruded to form a sheet. The sheet is then biaxially stretched to obtain a film. The biaxially stretched film is then treated with a thermal setting.