СОЕДИНЕНИЕ ТОНКИХ ПРОВОЛОЧЕК В НЕТКАНЫЙ МАТЕРИАЛ ДЛЯ ИЗГОТОВЛЕНИЯ СОТОВЫХ ЭЛЕМЕНТОВ

Изобретение относится к области металлургии, в частности к нетканым материалам. Предложен способ изготовления нетканого материала (1) из тонких проволочек (2). Способ заключается в выполнении по меньшей мере следующих стадий: а) из тонких проволочек (2) формируют слой (3), б) по меньшей мере часть тонких проволочек (2) скрепляют первым методом соединения путем образования между ними первых неразъемных соединений (4), причем соединения выполняют по заданной схеме (6) их размещения с приданием нетканому материалу по меньшей мере одного анизотропного свойства, и в) тонкие проволочки (2) скрепляют вторым методом соединения путем образования между ними вторых неразъемных соединений (5). Заявлены нетканый материал, сотовый элемент (7) со множеством каналов (11), по меньшей мере частично образованных нетканым материалом (1), и устройство (12) для снижения токсичности отработавших газов с по меньшей мере одним нетканым материалом (1). Предложенный способ изготовления нетканого материала обеспечивает ...

ОБЪЕМНЫЙ НЕТКАНЫЙ МАТЕРИАЛ

Изобретение относится к нетканому материалу, содержащему придающий объем материал, в частности шарики волокон, пух и/или мелкие перышки, с максимальным растягивающим усилием, измеренным согласно DIN EN 29073 при плотности 50 г/мпо меньшей мере в одном направлении, по меньшей мере 0,3 Н/5см, в частности от 0,3 Н/5см до 100 Н/5см. 3 н. и 9 з.п. ф-лы.

Изделие(я) с мягким нетканым полотном

Предлагается изделие, включающее мягкое нетканое полотно. Изделие содержит проницаемый для жидкости слой; непроницаемый для жидкости слой; абсорбирующую сердцевину, расположенную между упомянутым проницаемым для жидкости слоем и упомянутым непроницаемым для жидкости слоем; и нетканое полотно, содержащее: по меньшей мере первый слой волокон, изготовленных из первой композиции, содержащей пропиленовый сополимер; и по меньшей мере второй слой волокон, изготовленных из второй композиции, при этом упомянутая вторая композиция содержит количество пропиленового сополимера в процентах по весу от веса упомянутой второй композиции, отличное от количества упомянутого пропиленового сополимера в процентах по весу от веса упомянутой первой композиции, по меньшей мере один промежуточный волокнистый слой, расположенный между упомянутыми первым и вторым волокнистыми слоями, при этом упомянутый промежуточный волокнистый слой содержит волокна, изготовленные из третьей композиции, и при этом упомянутое нетканое ...

ЛИСТ НЕТКАНОГО МАТЕРИАЛА И ЭКСТРАГИРУЮЩИЕ ФИЛЬТР И ПАКЕТ ИЗ НЕГО

Изобретение относится к листу нетканого материала, используемому в экстрагирующем фильтре и др. и позволяющему обеспечить высокую прочность закупоривания, а также к экстрагирующему фильтру и др., изготовленному с использованием листа нетканого материала. Этот лист нетканого материала включает первый слой, содержащий нетканый материал, полученный по технологии спанбонд из волокон полимера на полиэфирной основе с характеристической вязкостью 0,60-1,00, кристалличностью 30-80%, ориентацией кристаллов 60-95% и коэффициентом двулучепреломления (Δn) 0,040-0,100, причем нетканый материал спанбонд имеет секцию частичного термокомпрессионного скрепления, в которой доля площади термокомпрессионного скрепления составляет 5-30%; и второй слой, содержащий нетканый материал, полученный по технологии мелтблаун из волокон полимера на полиэфирной основе, раздутых на поверхность первого слоя и отвержденных с кристалличностью от 0 до 14%. Экстрагирующий фильтр и т.д. сформированы помещением второго слоя нетканого ...

ИЗГОТОВЛЕНИЕ ПОЛОТНА УПАКОВОЧНОГО МАТЕРИАЛА

Изобретение относится к устройству (100) и способу (400) изготовления полотна упаковочного материала для пакетированного изделия из снаффа для орального применения. Полотно является проницаемым для слюны нетканым полотном, содержащим волокна, причем от 0 до 95% волокна относится к первому типу, а от 5 до 100% - ко второму типу, волокна первого типа представляют собой штапельное волокно на основе целлюлозы, а волокна второго типа являются термопластичными волокнами, которые расплавляются и/или размягчаются по меньшей мере у поверхности. Устройство содержит блок (110) кардочесания для кардочесания волокна для формирования предварительного полотна, блок (130) связывания в потоке воздуха для связывания предварительного полотна посредством по меньшей мере частичного расплавления и/или размягчения волокон второго типа для формирования полотна и блок (140) каландрования для поверхностной обработки полотна. Изобретение позволяет создать прочный и гибкий упаковочный материал для пакетированного ...

ПЕТЕЛЬНЫЙ МАТЕРИАЛ

Многослойный петлевой материал, включающий по меньшей мере один опорный слой и петлевой слой, поддерживаемый опорным слоем, при этом как опорный слой, так и петлевой слой содержат нетканый слой, а нетканый слой опорного слоя уплотнен посредством тиснения, причем с одной стороны указанный петлевой материал может быть в широких пределах адаптирован относительно воздушной проницаемости и тем не менее сохранять устойчивость относительно характеристик сцепления, а с другой стороны может быть относительно недорогим и гибким, если многослойный петельный материал характеризуется тем, что нетканый материал опорного слоя уплотнен путем тиснения с поверхностной плотностью тиснения в диапазоне 10-95%, а петельный слой и опорный слой с промежутками соединены друг с другом с поверхностной плотностью соединения менее поверхностной плотности тиснения. 11 з.п. ф-лы, 8 ил.

ПЛАВКОЕ КЛЕЯЩЕЕ ПОЛИЭФИРНОЕ БИКОМПОНЕНТНОЕ ВОЛОКНО

Изобретение относится к производству химических волокон и касается плавкого клеящего полиэфирного бикомпонентного волокна. Плавкое клеящее бикомпонентное волокно получено посредством вытяжки невытянутой нити, содержащей сложный полиэфир в качестве первого компонента и олефиновый полимер с температурой плавления ниже температуры плавления первого компонента в качестве второго компонента. Двойное лучепреломление в первом компоненте из сложного полиэфира составляет не более 0,150, а отношение двойного лучепреломления в первом компоненте к двойному лучепреломлению во втором компоненте составляет не более 3,0. Степень ориентации оси С кристаллического элемента второго компонента плавкого клеящего бикомпонентного волокна составляет не менее 90%, а прочность одной нити плавкого клеящего бикомпонентного волокна составляет не менее 1,7 сН/дтекс. Изобретение обеспечивает получение сверхтонкого термоусадочного бикомпонентного волокна с высокой производительностью, при котором состояние вытяжки-течения ...

ПРЕСС-ФОРМОВАННЫЙ ОДНОКОМПОНЕНТНЫЙ ОДНОСЛОЙНЫЙ РЕСПИРАТОР С БИМОДАЛЬНОЙ ОДНОКОМПОНЕНТНОЙ ОДНОСЛОЙНОЙ СРЕДОЙ

Пресс-формованный респиратор изготавливается из однокомпонентного однослойного нетканого полотна, содержащего бимодальную по массовой доле/размеру волокон смесь переплетенных непрерывных однокомпонентных полимерных микроволокон и волокон большего размера того же самого полимерного состава. Полотно заряжают, затем осуществляют пресс-формовку заряженного полотна в чашеобразную пористую однокомпонентную однослойную матрицу, волокна которой скреплены одно с другим по меньшей мере в некоторых точках пересечения волокон. Матрица имеет значение коэффициента жесткости по Кингу больше 1 Н. При формовке респиратора не требуются слои, повышающие жесткость, двухкомпонентные волокна или другие средства для усиления материала фильтрующего слоя, кроме того, респиратор легко подвергается вторичной обработке. 2 н. и 13 з.п. ф-лы, 27 ил., 32 табл.

МНОГОКОМПОНЕНТНЫЕ ВОЛОКНА И НЕТКАНЫЕ МАТЕРИАЛЫ, РАЗРУШАЮЩИЕСЯ ПОД ДЕЙСТВИЕМ ВОДЫ

Описываются многокомпонентные волокна, в которых, по меньшей мере, один компонент будет обеспечивать связывание волокон между собой и с другими видами волокон и в котором этот первый компонент способен также разрушаться в водной среде. Такие волокна могут быть использованы для образования волокнистых нетканых материалов, которые могут применяться в качестве составных частей в таких готовых изделиях, как предметы медико-санитарного назначения, полотенца и впитывающие изделия личной гигиены. Технический результат: возможность удаления изделий после использования альтернативными существующими методами. 10 с. и 5 з.п.ф-лы, 3 ил., 1 табл.

НЕТКАНЫЙ УТЕПЛИТЕЛЬНЫЙ ОГНЕСТОЙКИЙ МАТЕРИАЛ

Полезная модель относится к нетканому волокнистому утеплительному материалу с огнестойкими свойствами и используется для формирования подкладочного слоя швейного изделия. Технический результат заключается в повышении огнестойкости при сохранении высокой прочности утеплительного материала. Нетканый утеплительный огнестойкий материал для формирования подкладочного слоя швейного изделия включает смесь полимерных волокон, объединенных в полотно термическим скреплением, и содержит полимерные волокна и бикомпонентное волокно типа «ядро-оболочка» с концентрическим расположением. Бикомпонентное волокно имеет линейную плотность 0,48 текс, а полимерные волокна включают модакриловое волокно с линейной плотностью 0,33 текс, вискозное огнестойкое волокно с линейной плотностью 0,33 текс, метаарамидное волокно с линейной плотностью 0,22 текс. Указанная смесь содержит, масс. %: бикомпонентное волокно 32, модакриловое волокно 33, вискозное огнестойкое волокно 33, метаарамидное волокно 2. 7 ил, 1 табл.

ВОЛОКНИСТЫЕ КОМПОЗИТНЫЕ МАТЕРИАЛЫ И ИХ ПРИМЕНЕНИЕ В СИСТЕМАХ ВАКУУМНОЙ ИЗОЛЯЦИИ

Настоящее изобретение описывает волокнистый композитный материал, предназначенный для использования в качестве изоляционного материала, включающий высокоэффективные полимерные волокна, характеризующиеся температурой плавления или температурой стеклования, по меньшей мере, 200°C и теплопроводностью твердой фазы не более 0,7 Вт/(мК), и связующие волокна. Причем содержание высокоэффективных полимерных волокон составляет, по меньшей мере, 70% масс., тогда как содержание связующих волокон не превышает 30% масс. Волокнистый композитный материал обладает плотностью от 50 до 300 кг/м, измеренной при нагрузке в направлении, перпендикулярном плоскости основной ориентации волокон от 1 мбар до 1000 мбар, а также слоеобразным расположением волокон, по меньшей мере, часть которых соединена друг с другом в точках контакта, которые могут быть созданы благодаря размягчению связующих волокон, и высокоэффективные полимерные волокна обладают поперечным сечением некруглой формы. Кроме того, в заявке описана ...

ТЕРМОСВЯЗЫВАЕМОЕ ГИДРОФИЛЬНОЕ ДВУХКОМПОНЕНТНОЕ ПОЛИОЛЕФИНОВОЕ ВОЛОКНО И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Использование: получение пушистых волокнистых гигиенических поглощающих материалов. Сущность изобретения: расплавляют два полиолефина, взятых в соотношении 30 : 70 - 70 : 30. Полиолефин ядра имеет более высокую температуру плавления, а в расплав компонента оболочки вводят 0,1 - 5,0% от массы сформованного волокна поверхностно-активного вещества. Элементы формуют в пучок, вытягивают и разрезают на отрезки длиной <35 мм. В качестве поверхностно-активного вещества может неионогенное, катионное, сложный эфир жирной кислоты и глицерина, амид жирной кислоты, полигликолевый амид. Двухкомпонентное термосвязываемое гидрофильное волокно имеет тонину 1 - 7 дтекс и может иметь до 4 извивов. 2 с. и 13 з.п. ф-лы, 4 табл., 4 ил.

Машина для продольного спаивания нетканых полотен с пропиточно-сушильным узлом

Заявлена машина для продольного спаивания нетканых полотен с пропиточно-сушильным узлом, выполнена с возможностью выполнять два автономных не зависимых друг от друга технологических процесса, продольного спаивания нетканых полотен и пропитку нетканого полотна с последующей его сушкой, которая позволяет производить нетканые полотна большой ширины до 12.4 м и придавать им различные физико-механических свойств. 1 з.п. ф-лы, 2 ил.

СПОСОБ ПОЛУЧЕНИЯ НЕТКАНОГО ЛИСТОВОГО МАТЕРИАЛА, СОДЕРЖАЩЕГО НЕПРОНИЦАЕМЫЙ СЛОЙ НА ОДНОЙ СТОРОНЕ И ПРОТИВОСКОЛЬЗЯЩЕЕ ПОКРЫТИЕ НА ДРУГОЙ СТОРОНЕ

Изобретение относится к способу получения нетканого листового материала, нетканому материалу и изделию для защиты поверхностей. Способ включает следующие стадии: прочесывания (2) волокон (1) с общей преобладающей ориентацией и формирования полотна, скрепления (4) волокон с получением нетканого листового материала, нанесения (7) противоскользящего покрытия на одну из поверхностей материала, нанесения полимера на вторую поверхность нетканого материала и сохранения ориентации волокон на протяжении всего процесса. Изобретение позволяет получить нетканый материал с более прочными свойствами, а также улучшенный в части производительности или скорости производства способ. 3 н. и 12 з.п. ф-лы, 4 ил.

ПЛАМЕГАСЯЩЕЕ НЕТКАНОЕ ПОЛОТНО

Предложено пламегасящее нетканое полотно, имеющее превосходную обрабатываемость и высокие пламегасящие свойства. Пламегасящее нетканое полотно имеет плотность 200 кг/мили более и включает неплавкие волокна A, степень высокотемпературной усадки которых составляет 3% или менее и модуль упругости которых, умноженный на площадь поперечного сечения волокон, составляет 2,0 Н или менее, и термопластические волокна B, значение LOI которых, определяемое согласно стандарту JIS K 7201-2 (2007), составляет 25 или более. 4 з.п. ф-лы, 1 ил., 1 табл.

СПОСОБ ИЗГОТОВЛЕНИЯ ОСОБО МЯГКОГО И ТРЕХМЕРНОГО НЕТКАНОГО МАТЕРИАЛА И НЕТКАНЫЙ МАТЕРИАЛ, ИЗГОТОВЛЕННЫЙ ЭТИМ СПОСОБОМ

... 1. Способ изготовления фильерного и/или кардного нетканого слоя, включающий в себя следующие последовательные операции, на которых осуществляют: a) размещение по меньшей мере одного слоя (T1) волокон или микроволокон фильерного и/или кардного нетканого типа на подходящей опоре S; b) обработку слоя T1 так, чтобы получить увеличение его толщины пропусканием слоя T1 через средство утолщения, которое содержит два валика (2, 3) и по меньшей мере одну поверхность, снабженную ребрами, имеющими высоту больше 1 мм, свободную головку с контактной поверхностью для волокон или микроволокон, имеющих удлинение меньше 0,80 мм2, при этом указанные ребра распределены так, что они покрывают менее 14% указанной по меньшей мере одной поверхности. 2. Способ по п.1, в котором указанные ребра имеют высоту около 2 мм, контактную поверхность их свободных головок около 0,50 мм2 и распределение на указанной поверхности такое, чтобы покрывалось 7-9% этой поверхности. 3. Способ по п.1 или 2, в котором операцию b) выполняют ...

СОЕДИНЕНИЕ ТОНКИХ ПРОВОЛОЧЕК В НЕТКАНЫЙ МАТЕРИАЛ ДЛЯ ИЗГОТОВЛЕНИЯ СОТОВЫХ ЭЛЕМЕНТОВ

... 1. Способ изготовления нетканого материала (1) из тонких проволочек (2), заключающийся в выполнении по меньшей мере следующих стадий: ! а) из тонких проволочек (2) формируют слой (3), ! б) по меньшей мере часть тонких проволочек (2) скрепляют первым методом соединения путем образования между ними первых сплошных или неразъемных соединений (4) и ! в) тонкие проволочки (2) скрепляют вторым методом соединения путем образования между ними вторых сплошных или неразъемных соединений (5). ! 2. Способ по п.1, при осуществлении которого на стадии б) в качестве первого метода соединения используют сварку. ! 3. Способ по п.1, при осуществлении которого на стадии в) в качестве второго метода соединения используют высокотемпературную обработку нетканого материала (1) для образования соединений спеканием. ! 4. Способ по п.1, при осуществлении которого на стадии б) соединения выполняют по заданной схеме (6) их размещения с приданием нетканому материалу по меньшей мере одного анизотропного свойства. !

НЕТКАНЫЙ МАТЕРИАЛ

Предложен нетканый материал 10, содержащий подвижный слой 4, имеющий переднюю и заднюю поверхности 10SA и 10SB, при этом подвижный слой 4 имеет диапазон подвижности, при котором одна поверхность из передней и задней поверхностей выполнена с возможностью перемещения на 5 мм или более в направлении вдоль упомянутой одной поверхности относительно другой поверхности. 3 н. и 27 з.п. ф-лы, 12 ил., 1 табл.

Чистящее изделие и способы его изготовления и применения

Биологически разлагающиес термопластичные нетканые материалы, предназначенные дл распределени жидкости

... 1. Нетканый материал, обладающий проницаемостью, находящейся в диапазоне от примерно 500 до примерно 1500 мкм2, и объемом пустот, превышающим 25 см3/г, причем материал включает первое биологически разлагающееся связывающее волокно, которое не подвергается значительной термической усадке, и второе биологически разлагающееся термопластичное волокно. 2. Нетканый материал по п.1, отличающийся тем, что первое волокно представляет собой многокомпонентное волокно, включающее полимолочную кислоту (ПМК). 3. Нетканый материал по п.2, отличающийся тем, что многокомпонентное волокно включает компонент, находящийся на поверхности, и компонент, не находящийся на поверхности, и компонент, находящийся на поверхности, обладает температурой плавления, которая не менее чем примерно на 10°С ниже температуры плавления компонента, не находящегося на поверхности. 4. Нетканый материал по п.3, отличающийся тем, что второе термопластичное волокно обладает температурой плавления, которая не менее чем примерно на ...

БИОЛОГИЧЕСКИ РАЗЛАГАЮЩИЕСЯ НЕТКАНЫЕ МАТЕРИАЛЫ, ПРЕДНАЗНАЧЕННЫЕ ДЛЯ РАСПРЕДЕЛЕНИЯ ЖИДКОСТИ

... 1. Нетканый материал, обладающий проницаемостью, находящейся в диапазоне от примерно 500 до примерно 1500 мкм2, и объемом пустот, превышающим 25 см3/г, причем материал включает первое биологически разлагающееся связывающее волокно, которое не подвергается значительной термической усадке, и второе биологически разлагающееся волокно, обладающее высокой прочностью на разрыв. 2. Нетканый материал по п.1, отличающийся тем, что первое волокно представляет собой многокомпонентное волокно, включающее полимолочную кислоту (ПМК). 3. Нетканый материал по п.2, отличающийся тем, что многокомпонентное волокно включает компонент, находящийся на поверхности, и компонент, не находящийся на поверхности, и компонент, находящийся на поверхности, обладает температурой плавления, которая не менее чем примерно на 10°С, ниже температуры плавления компонента, не находящегося на поверхности. 4. Нетканый материал по п.3, отличающийся тем, что компонент, находящийся на поверхности, представляет собой L,D-полилактид ...

ТРЯПКА ДЛЯ УБОРКИ

... 1. Тряпка для уборки, содержащая: лист подложки и множество пучков длинных волокон, предусмотренных, по меньшей мере, на одной стороне листа подложки, где каждый упомянутый пучок длинных волокон выполнен посредством объединения длинных волокон, ориентированных, по существу, в одном направлении; где пучки длинных волокон расположены параллельно и присоединены к листу подложки, при этом:- каждый упомянутый пучок длинных волокон сформирован посредством соединения длинных волокон вместе с помощью множества участков для соединения волокон, каждый из которых проходит прямолинейно в направлении, пересекающемся с направлением ориентации длинных волокон, и каждый упомянутый пучок длинных волокон присоединен к листу подложки с помощью множества участков для присоединения к листу;- каждый упомянутый участок для присоединения к листу выполнен таким образом, чтобы он был наложен на часть одного из участков для соединения волокон; и- каждый упомянутый пучок длинных волокон разрезан множеством прямолинейно ...

ВОЛОКНА ТИПА ОБОЛОЧКА-СЕРДЕЧНИК С ВЫСОКОПРОЧНЫМИ ТЕРМИЧЕСКИМИ СВЯЗЯМИ, ПОЛУЧЕННЫЕ ФОРМОВАНИЕМ ИЗ РАСПЛАВА

Способ и устройство для формования полимерных нитей позволяет получать нити со структурой типа оболочка - сердечник путем подачи полимерной композиции на фильеру со скоростью, достаточной для обеспечения скорости формования через фильеру от примерно 10 до 200 м/мин, нагревания полимерной композиции на фильере или в области, прилегающей к фильере, так, чтобы нагреть полимерную композицию до температуры, достаточной для изготовления нити со структурой типа оболочка - сердечник после ее охлаждения в окислительной среде, экструзии нагретой полимерной композиции через фильеру со скоростью формования от примерно 10 до 200 м/мин с получением расплавленных нитей и охлаждения расплавленных нитей в окислительной среде с целью достижения деградации путем окислительного расщепления цепочки по крайней мере на поверхности расплавленных нитей для получения нитей, обладающих структурой типа оболочка - сердечник.

УСТРОЙСТВО ДЛЯ СКРЕПЛЕНИЯ ТЕКСТИЛЬНЫХ ВОЛОКОН ПОСРЕДСТВОМ ГОРЯЧИХ ГАЗОВ

... 1. Устройство для скрепления текстильных изделий в виде полотен посредством горячих газов, в частности, для скрепления нетканого материала, содержащего расплавляемые волокна и/или элементарные нити, содержащее:- барабан, установленный с возможностью вращения внутри обрабатывающей камеры, в которую подают горячий воздух, причем упомянутый барабан содержит периферическую поверхность, выполненную газопроницаемой за счет множества отверстий и частично обернутую полотном, подлежащим скреплению;- установку для отсасывания воздуха, спаренную с барабаном, посредством которой в барабане создается такое разрежение, что горячий воздух проходит из обрабатывающей камеры сквозь материал в виде полотна, подлежащий скреплению; и где- нагреватель для нагрева воздуха, выводимого из барабана;при этом:структурированная подкладка, которая тиснит текстильное изделие с помощью множества отверстий во время процесса скрепления, обвита на периферическую поверхность барабана, выполненную газопроницаемой, и упомянутые ...

ИЗДЕЛИЯ, СОДЕРЖАЩИЕ ВОЛОКНА И/ИЛИ ФИБРИДЫ, ВОЛОКНА И ФИБРИДЫ И СПОСОБ ИХ ПОЛУЧЕНИЯ

... 1. Способ получения изделия, усиленного с помощью волокон, отличающийся тем, что изделие содержит, по меньшей мере, волокна и/или фибриды, сформованные из смеси полимеров, которая включает в себя, по меньшей мере, один термостойкий полимер и один термопластичный полимер, выбранные из группы полисульфидов и полисульфонов, причем укрепление указанного изделия достигают термическим прессованием при температуре, превышающей температуру стеклования указанного термопластичного полимера. 2. Способ по п.1, отличающийся тем, что термостойкий полимер выбирают из ароматических полиамидов, ароматических полиамид-имидов или полиимидов. 3. Способ по п.1, отличающийся тем, что термопластичный полимер выбирают из простого полиэфирсульфона или полифениленсульфона. 4. Способ по любому из пп.1-3, отличающийся тем, что термопластичный полимер и теплостойкий полимер растворимы в одном и том же растворителе. 5. Способ по любому из пп.1-3, отличающийся тем, что смесь полимеров содержит, по меньшей мере, 10 мас ...

Verbundvliesstoffe

Spinnverfahren zur Herstellung von Polyolefinfasern mit hoher Wärmeverschweissbarkeit

Kern-Mantel-Faser mit hoher thermischer Haftfestigkeit in einem Schmelzspinnsystem

Schmetzklebende Verbundfasern, Verfahren zu ihrer Herstellung und daraus hergestellter schmelzgebundener Stoff oder Oberflächenmaterial

VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG EINES GEWELLTE FASERN ENTHALTENDEN FASRIGEN MATERIALS

Decklage für Körperflüssigkeitabsorbierende Artikel

VERBINDUNG VON FASERN

THERMISCH-VERSCHWEISSBARE POLYOLEFINFASERN ENTHALTENDE STATISTISCHE POLYMERE AUS PROPYLEN

Textilprodukt, Verfahren zur Herstellung des Textilproduktes sowie Verwendungen des Textilproduktes

Die Erfindung betrifft ein Textilprodukt, aufweisend Trägerfasern und Bindefasern, wobei die Trägerfasern ein Polymerblend mit einer Glasübergangstemperatur > 70°C aufweisen. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines Textilproduktes, umfassend die Schritte: – Bereitstellen von Trägern- und Bindefasern und – Verarbeiten der Träger- und Bindefasern zu einem Textilprodukt, wobei die Trägerfasern ein Polymerblend mit einer Glasübergangstemperatur > 70°C aufweisen. Außerdem betrifft die Erfindung die Verwendung eines Textilproduktes zur Herstellung von textilen Gegenständen, bevorzugt Inferior-Textilien, semitechnischen Textilien, technischen Textilien, Heimtextilien, Kleidung und/oder medizintechnischen Textilien.

Verfahren zur Herstellung von Material für Kissen

FASERGRUNDMATERIAL UND INNENRAUMMATERIAL, DAS DIESES VERWENDET

Das vorgestellte lagenförmige Fasergrundmaterial (1) hat Fasern und ein thermoplastisches Harz. Die Fasern sind durch das thermoplastische Harz gebunden, und das Fasergrundmaterial (1) weist eine Vielzahl von Bereichen (3, 5) auf, die sich beim Flächengewicht unterscheiden. Das Fasergrundmaterial kann einen Einschnitt haben, und das Flächengewicht eines um den Einschnitt herumliegenden Einschnittumgebungsbereichs kann höher als das eines um den Einschnittumgebungsbereich herumliegenden Bereichs sein. Das vorgestellte Innenraummaterial hat das Fasergrundmaterial (1) und eine Oberflächenschicht, die auf einer Seite des Fasergrundmaterials (1) angeordnet ist.

Bewitterungsstabiler Vliesstoff

Dreidimensionales Faserformteil, Vorrichtung und Verfahren zur Herstellung eines dreidimensionalen Faserformteils

Die Erfindung betrifft ein dreidimensionales Faserformteil (1) aufweisend Fasern (2), die in eine Form (17) eingeblasen und untereinander durch Wärmezufuhr und/oder ein Bindemittel verbunden worden sind. Wesentlich ist, dass das Faserformteil (1) zusätzlich ein mit den Fasern (2) vermischtes Granulat (3) aufweist. Weiter betrifft die Erfindung ein Verfahren sowie eine Vorrichtung (10) zum Herstellen eines dreidimensionalen Faserformteils (1).

AUFBUEGELBARER EINLAGEVLIESSTOFF

VERFAHREN ZUR HERSTELLUNG VON VERFORMBAREN, NICHTGEWOBENEN STOFFBAHNEN.

Material zur inneren Polsterung von Fahrzeugen

Faserförmige Polsterung für Innenmaterialien von Fahrzeugen, wobei wenigstens zwei oder mehr Lagen einer faserförmigen Basis, die durch Mischen von Poly(1,4-cyclohexandimethanolterephthalat) (PCT) mit beliebigen Bindefasern aus der Gruppe Polybutylenterephthalat (PBT), Co-Poly(1,4-cyclohexandimethanolterephthalat) (Co-PCT) und Polypropylen (PP) hergestellt ist, laminiert sind, und wobei zwischen den benachbarten Lagen der faserförmigen Basis Abstandsstoffe zwischengeordnet sind, deren Hauptkomponente aus PCT-Fasern mit einer Hilfskomponente co-polymerisiert ist, welche aus der Gruppe Polybutylenterephthalat (PBT), Co-Poly(1,4-cyclohexandimethanolterephthalat) (Co-PCT) und Polypropylen (PP) gewählt ist, so dass die Abstandsstoffe aus PCT/PBT, PCT/Co-PCT oder PCT/PP gefertigt sind.

Thermal bonding for non-wovens of two-component fibres

A single carrier medium in the form of a perforated conveyor belt or a perforated drum is used to carry the loose material through a hot zone and then into a cold zone. In the hot zone the temps are 5-15 degrees C above the melting point of the fibres' cladding so that it melts and the fibres fuse together while the cores remain in the solid state. The length of heat application is achieved by an adjustable shield. The hot air is kept relatively free of oxygen to reduce yellowing. In the cold zone the melted fibre cladding is set to provide a bonded non-woven at speeds comparable to needle bonding equipment.

Dyeing nylon heterofibres stable to bonding - with aq. acid soln of reactive dye

The heterofibres are dyed stable to subsequent bonding treatment by contacting them with an aq. weakly acid soln. of a halogen-contg. dye able to form covalent bonds with the amino gps. present in the nylon.

Reibbelag

Es wird ein Reibbelag mit einer porösen Faserschicht beschrieben, der sich dadurch auszeichnet, daß die Faserschicht aus einem gesinterten Faserverbund vorzugsweise aus Polyimidfasern besteht.

POLYESTERFASER

FEUCHTIGKEIT ABSORBIERENDE UND ABGEBENDE SYNTHETISCHE FASER UND DARAUS HERGESTELLTES VERFLOCHTENES FADENGEMISCH, STRICKWAREN, GEWEBE UND VLIESSTOFFE

Vorrichtung zur Herstellung eines Faservlieses, z.B. aus Baumwolle, Chemiefasern o.dgl.

Bei einer Vorrichtung zur Herstellung eines Faservlieses, z. B. aus Baumwolle, Chemiefasern o. dgl., ist einer Flockenspeisereinrichtung ein Vliesbildner und/oder ein Vliesverfestiger nachgeschaltet und ist das Fasermaterial förderbar. DOLLAR A Um auf einfache Art die Herstellung eines gleichmäßigen Faservlieses zu ermöglichen, ist zwischen der Flockenspeisereinrichtung einerseits und dem Vliesbildner und/oder dem Vliesverfestiger andererseits eine Streckeinrichtung zur Verstreckung des Flockenmaterials angeordnet.

ABBAUBARE POLYMERFASERN: HERSTELLUNG, PRODUKTE UND VERWENDUNGSVERFAHREN

Kohlenstofffaser-Wirrvliesherstellungsverfahren und Dreidimensional-Vliesherstellungsverfahren sowie Kohlenstofffaser-Wirrvliesherstellungsanordnung und Faservlies

Die Erfindung betrifft ein Kohlenstofffaser-Wirrvliesherstellungsverfahren aus Kohlenstofffasern bis zu einer Faserlänge von 100 mm, umfassend die Schritte: I. Zuführen von Kohlenstofffasern; II. Auflösen/-kämmen und aerodynamisches Vereinzeln der Kohlenstofffasern; III. aerodynamisches Beruhigen der vereinzelten Kohlenstofffasern; IV. Einleiten der beruhigten und vereinzelten Kohlenstofffasern in einen vertikal angeordneten Luftschacht (1), wobei das Einleiten am oberen Ende (12) des Luftschachtes (1) erfolgt; V. kontaktloses Durchmischen der Kohlenstofffasern innerhalb des Luftschachtes (1) durch Luftverwirbeln mittels einer Vielzahl von einzelnen Luftströmen; VI. aerodynamisches Ablegen der Kohlenstofffasern auf eine unterhalb des Luftschachtes (1) angeordnete sich bewegende Form oder Ablegefläche (2), wobei das aerodynamische Ablegen durch ein Absaugen unterhalb der Form oder der Ablegefläche (2) erfolgt. Ferner betrifft die Erfindung eine Kohlenstofffaser-Wirrvliesherstellungsanordnung ...

Filtermedium

Thermisch geprägter Vliesstoff und Verfahren zu seiner Herstellung

Die Erfindung betrifft einen thermisch geprägter Vliesstoff, geeignet zur Herstellung einer Dekorschicht für den Autoinnenraum, wobei der Vliesstoff thermoplastische Fasern enthält, vernadelt ist und eine Höchstzugdehnung von mindestens 30 % zeigt, und wobei der Vliesstoff eingeprägte Vertiefungen aufweist, die an ihrem Grund Grundflächen aufweisen, wobei das Verhältnis zwischen der Dicke des Vliesstoffs im Bereich der Grundflächen der Vertiefungen und der Dicke des Vliesstoffs im Bereich der ungeprägten Bereiche höchstens 0,1 beträgt, wobei der Anteil der Gesamtgrundfläche der Vertiefungen an der Gesamtfläche des Vliesstoffs von 0,5 % bis 30 % beträgt.

Faserverbundwerkstoff und Verfahren zu seiner Herstellung

BIOLOGISCH ABBAUBARE THERMOPLASTISCHE VLIESSTOFFE ZUR FLÜSSIGKEITSKONTROLLE

Verfahren zur Herstellung eines gewebeartigen oder filzartigen Materials

Faservlies mit Pulver, Verfahren und zugehörige Flächengebilde

KOMPRIMIERTE OLEFINFASERN

VLIESSCHICHTSTOFFE MIT VERBESSERTEM SCHÄLWIDERSTAND

WASSERSTABILE FASERN UND ARTIKEL MIT STÄRKE, SOWIE HERSTELLUNGSVERFAHREN

Making pleated non-woven material for filters involves passing heated batt of drawn filaments with thermoplastic or thermosetting binder between shaped rollers

A non-woven batt (1), e.g. of 200 g/m 2>, containing drawn synthetic fibers with a thermoplastic or thermosetting binder is heated in an oven (2), e.g. to about 200 [deg]C, and then passed between profiled calender rollers (3), e.g. at 80 to 90 [deg]C, to pleat and cool it. The pleats have grooves to act as spacers, with a height equal to at least a quarter of the material thickness.

Verfahren und Vorrichtung zur Behandlung von Kunststoff-Bahnmaterial

Filtermedium

Verfahren zur Herstellung von thermoadhäsiven Konjugatfasern und von dieselben verwendenden Vlies"

Verfahren zur Herstellung von thermoadhäsiven Konjugatfasern, wobei das Verfahren umfasst: Bereitstellen einer ersten thermoplastischen Harzkomponente (I), die ein mit mindestens einer Art an reaktiver funktioneller Gruppe modifiziertes Polyolefin enthält, und einer zweiten thermoplastischen Harzkomponente (II), umfassend Polyester oder Polyolefin, mit einem höheren Schmelzpunkt als der Schmelzpunkt der ersten thermoplastischen Harzkomponente (I), wobei das mit mindestens einer Art an reaktiver funktioneller Gruppe modifizierte Polyolefin ein Copolymer aus einem Olefinmonomer und einer ungesättigten Carbonsäure, deren Ester oder deren Anhydrid ist, und das Komponentenverhältnis der ersten Komponente und der zweiten Komponente des Faserquerschnitts im Bereich von 10/90 bis 90/10 liegt, Verspinnen der ersten thermoplastischen Harzkomponente (I) und der zweiten thermoplastischen Harzkomponente (II) bei einer Temperatur von 180 bis 350°C, so dass Konjugatfasern erhalten werden, welche die erste ...

Verfahren zur Herstellung von Faservliesen

Olefin polymers

Perforated nonwoven fabrics

Forming of consolidation regions in a web and a web comprising such regions

Process of and apparatus for the manufacture of paper-like materials from thermoplastic synthetic materials

... 735,175. Paper &c. made from synthetic filaments; agglutinated fibrous sheet materials. LINGS, J. B. (Roser Ges., C. F.). June 10, 1952, No. 14640/52. Drawings to Specification. Classes 96 and 140. A fleece of thermoplastic filaments, e.g. of polyvinyl products or mixed polymers, polyacryl polyamides, super-polyamides, or cellulose esters or mixed esters, e.g. 4 to 6 cm. in length, is subjected to pressure exerted, e.g., through wire-mesh fabrics of 200 to 400 meshes per square cm. to unite the filaments, e.g. with the aid of heat or of a solvent or a swelling agent, at the points of contact of the filaments with each other. The fleece may be multi-layered with the filaments of different layers at rightangles &c. A coating of the same plastic as that of the filaments may be applied and the product calendered. In one form, the fleece is conveyed between two endless wire fabrics and is pressed against a heated roller on one side, cooled, pressed against a heated roller on the other side, ...

NON-WOVEN LAMINATED MATERIAL

Nonwoven Fabric Having Improved Wet Strenght.

... 1,171,941. Non-woven fabric; paper. JOHNSON & JOHNSON. 1 Nov., 1966 [17 Nov., 1965], No. 48954/66. Headings D2B and D1R. A nonwoven fabric of improved wet strength comprises 25-95% cellulose fibres (i.e. cotton or regenerated cellulose fibres) and 5-75% partially fused polypropylene fibres in bonding relationship therewith. The polypropylene fibres are distributed throughout the cellulose fibres but substantial areas of the cellulose fibres are free of partially fused polypropylene fibres whereby the fabric has absorbency for liquids. The bonded polypropylene fibres may cover no more than 20% of the fabric surface. The polypropylene fibres are generally ¢-2" long and 1-5 denier. The regenerated cellulose fibres can be rayon. The mixed fibrous web can be formed by carding, air-laying or waterlaying, or by sprinkling polypropylene fibres on or between cellulose fibre webs. The fibres in the web may be aligned. The polypropylene fibres can be uniformly distributed or may be in an intermitted ...

SURGICAL DRESSING

Variable stretch material and process to make it

A stretchable nonwoven web, or laminate of a stretchable nonwoven web and an elastic sheet, is treated with a plurality of bond lines in one or more regions thereof to provide controlled stretching properties. In one embodiment, the nonwoven web or laminate has at least one first region having a plurality of bond lines in a direction parallel to the machine direction and at least one second region having a plurality of bond lines in a direction parallel to the cross-machine direction to provide controlled stretching in different directions in different regions of the web. The bond lines can be substantially continuous in length, or segmented. When segmented bond lines are employed, the length of the bond line segments and spacing between them can be varied to impart variable stretch properties to the nonwoven web or laminate.

Formation of leather sheet material using hydroentanglement

Leather sheet material is made by hydroentangling a web (4) of mixed reclaimed leather fibres and synthetic fibres. The synthetic fibres are meltable bicomponent fibres which are heated prior to entanglement to fuse and form a supporting network for the leather fibres. A sheet of tissue paper (1a) is laid over the surface of the leather fibre web (4) and hydroentanglement jets (16) are directed through the tissue paper into the web.

Bicomponent fibers and textiles made therefrom

A bicomponent sheath core fiber is used to make a polymeric non-woven material having textile qualities. The sheath is an oriented polymer and the core is a polymer that flows or melts at a temperature lower than the melting point of the sheath. Non-woven mats are made of these fibers by heating the mat so that the core material melts, flows, and bonds to adjacent fibers in the non-woven mat The non-woven material may have the qualities of a synthetic leather.

Nonwoven fabric formed from alloy fibres

Bonded Fibrous Materials and Methods for Making them.

... 1,160,428. Non-woven fabric, yarns, finishing fabrics, paper. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 Sept., 1967 [20 Sept., 1966], No. 41859/66. Headings D1R, D1S, D1W, D2A and D2B. A bonded fibrous material is made by forming composite "fibres" into a fibrous structure and heating to render one of the fibre components adhesive so as to bond the fibres to each other. The composite fibres comprise at least two immiscible polymers, at least one of which is dispersed in the other(s) and at least one of which, but not all, is rendered adhesive by heating under conditions which leave the other polymer(s) unaffected. The polymers may be polyolefins, polyamides, polyesters, poly (epsiton caprolactam), poly (aminoundecanoic acid) and copolymers thereof. Pigments, brightners, stabilisers and dispersing agents may also be present in the fibres. The term "fibres" includes staple and flock fibres and continuous filaments. The heating may be by air, hot plates or rolls, radiant heat, ultrasonic or dielectric ...

Fluid permeable web

A fluid nervous thermoplastic containing web is provided which has a predetermined barrier pattern consisting of fused lines. The web is useful as a wrap for absorbent sanitary appliances or for toweling in which the fused barrier in each instance minimizes surface runoff and excessive wicking. The invention also includes a process for making a sanitary appliance with the web of the subject invention.

Non-woven synthetic fiber structures

... 932,483. Non-woven webs; paper containing Synthetic fibres. E. I. DU PONT DE NEMOURS & CO. May 8, 1961 [May 9, 1960 (2)], No. 16610/61. Drawings to Specification. Classes 42 (2) and 96. A non-woven web comprises at least 50% by weight of synthetic organic spontaneously elongatable fibres and from 3 to 50% by weight of a synthetic organic polymer binder disposed uniformly throughout the web. By the term " spontaneously elongatable fibres " is meant fibres which are capable of elongating spontaneously at least 3% upon heating at a temperature 30‹ C. above the second order transition temperature of the fibres for five minutes. Suitable materials for the fibres are polyethylene terephthalate, polyhexahydro-p-xylylene terephthalate, polymers of monomers prepared by reacting terephthalic acid with ethylene glycol, poly(p-xylylene azelaeamide), polymethanes, acrylonitrile polymer and polypropylene. The fabric may be made by preparing a suspension of the spontaneously elongatable fibres and the ...

Hot-melt adhesive fibers

Hot melt-adhesive fibers for nonwoven fabrics are provided which (i) comprise a polyethylene resin composition (C) alone, consisting of 50 to 100% by weight of a polyethylene (A) having a density of 0.910 to 0.940 g/cm<3> and a Q value (Q=Mw/Mn) of 4.0 or less and 50 to 0% by weight of a polyethylene (B) having a density of 0.910 to 0.930 g/cm<3> and a Q value of 7.0 or more, or (ii) are composite fibers which contain said composition (C) as one of the composite components and in which said composition (C) forms continuously at least a part of the composite fiber surface. The composite fibres may be obtained by co-spinning with, for example, high density polyethylene, polypropylene or polyester.

Fabric member

A curable fabric member comprising first and second curing reactants in elongate, preferably extruded, form. The reactants may be coextruded orsequentially extruded to form aa single filament, or may be provided as separate staple fibres incorporated in a spun yarn, or as separate continuous filaments assembled into a multi-filament yarn.

Method for manufacture of shaped article of acetate fibers

A method for the manufacture of a self form-retaining shaped article of mutually randomly joined acetate fibers comprising dissolving the surface layer of said acetate fibers with a bonding agent, intimately joining the dissolved surfaces of adjacent acetate fibers, and drying said acetate fibers as joined, said bonding agent applied to the surface layer of the acetate fibers being a liquid containing a lactam compound possessing a cyclicamide structure having 5 to 7 carbon atoms in the cyclic ring thereof. The product may be a sheet, cigarette filter or felt pen core.

Sterilizable medical wrap

A sterilizable medical wrap comprises a melt blown microfibre matt which at localised regions disposed thereacross is welded face-to-face to a non-woven reinforcing web of discontinuous fibres at least some of which are thermoplastic.

A SYNTHETIC VELOUR SPLIT LEATHER AND ITS PRODUCTION

An artificial split suede leather, especially for sport or casual style shoes, is a split, needled, nonwoven material of unshrunk fibers containing at least 20% polyamide fibers by weight of the fibers having a trilobate, Y-shaped cross section. In a process of making it, only needling is used for consolidating the fibers. A spherical filler may also be used.

Processes for the treatment of fibrous materials

The pilling resistance, dimensional stability and body of fibrous materials are improved by treating them with a single-phase liquid solution comprising a liquid medium and an inert extender and a latent solvent for the fibres which are soluble in or miscible with the liquid medium, insolubilizing the inert extender on the surface of the fibres, thereby converting the system to a plurality of phases, activating the latent solvent on the fibres sufficiently to point-bond the fibres at a number of point sites and removing all the remaining components of the liquid solution from the fibrous materials. Staple fibres, monofilaments, tow, sliver, yarns, woven knitted and non-woven fabrics, including pile fabrics, made from polyamides, polyesters, polyacrylonitrile and copolymers of acrylonitrile with vinylacetate, vinyl chloride, methyl acrylate and vinyl pyridine, acrylonitrile/methyl acrylate/sodium styrene sulphonate terpolymers, vinyl and vinylidine polymers and copolymers, polycarbonates ...

NONWOVENS HAVING SPACED-APART BONDING SPOTS

METHOD AND APPARATUS FOR SHAPING FIBER MATS

A PROCESS FOR THE PRODUCTION OF BONDED NON WOVEN FIBRE FLEECES

... 1300813 Fleece of composite fibres FARBENFABRIKEN BAYER AG 13 March 1970 [15 March 1969] 12124/70 Heading D1R A bonded non-woven fleece or mat consists of or contains synthetic fibres, or mixtures of synthetic and natural fibres, which contains at least 30% by weight of two component fibres having a sheath/core structure, the core component being a polyamide-6 and the sheath component being a copolyamide of amiriocaproic acid and aminoundecanoic acid, the sheath component having a softening range at least 20‹C below that of the core component. The fleece is produced by heating an unbonded fleece at a temperature in the softening range of the sheath component which becomes plastic and acts as a binder while the core is unchanged. The fleece may be formed by a carding machine. The two-component fibres may be mixed with fibres having a crimp. An example is given of them mixed with fibres of carbonised wool. Heating may be effected by calendering at a temperature between 100 and 150‹C. The ...

JOINING FABRICS

... 1332037 Seaming non-metallic sheet material COURTAULDS Ltd 28 Jan 1971 3357/71 Heading B5K A seam 5 between two portions 1, 2 of thermoplastic fabric consisting wholly or partly of thermoplastic filaments, threads or yarns, comprises spaced welds 8 located along two lines 6, 7 which are in spaced relation to one another and further welds 10 located between the lines 6, 7. The total area of the welds 8, per unit length of the seam, in each of the lines 6, 7 is greater than the total area of the welds 10, per unit length of the seam. The lines 6, 7 extend side-by-side in the longitudinal direction of the seam 5 and may be parallel and they may be curved. The further welds 10 may be line or spot welds arranged in a zig-zag pattern between the lines 6, 7. In a modification, Fig. 4, the further welds may be elongated welds 14 inclined at 45 degrees to the lines 6, 7. The seam 5 may be formed by a heated bar or a radio frequency electrode, e.g. of brass or aluminium, having upstanding studs thereon ...

Improvements in and relating to porous fibrous bodies

A stiff elongate porous bonded fibrous body comprises filaments a major portion of which are crimped, a major portion also being continuous filaments which extend between the two end faces of the body, the filaments being bent in addition to the crimps at random locations, and between bends extending transversely to the length of the body, the filaments being bonded together at points where they lie in contact. A tow (2) (Fig. 1 not shown) of preponderantly continuous filaments which may be treated with a plasticiser is fed by means of foraminous sleeves (6, 7) which rotate about hollow cylinders (4, 5) into a tapered guide (3). Air is supplied under pressure from the cylinders (4, 5) through apertures (9) therein and through the sleeves (6, 7) into the guide (3) and serves to distribute the filaments of the two across the cross-section of the enlarged end of the guide (3). Alternatively the tow as a whole may be made to oscillate thereby laying itself in zig zag form in layers across the ...

Bonded needled felt

The process of the parent Specification is modified by including the additional step of compacting the web by needling at the same time as or before activating the latent solvent. A second compacting step may be applied after the needling, e.g. in a heated press so that the activation of the latent solvent takes place during the pressing.

A method of making non-woven fabrics

... 946,449. Laminates. R. FREUDENBERG, H. FABRICUS, H. E. FREUDENBERG, K. KRAFT, O. SCHILDHAUER, P. WENTZLER, H. FREUDENBERG, and D. FREUDENBERG, [trading as CARL FREUDENBERG]. March 11, 1960 [March 18, 1959], No. 8617/60. Drawings to Specification. Heading B5N. [Also in Division D1] A fibrous sheet usable as an overlay for glass fibre reinforced polyester resin material is made by impregnating a polyester, cotton, wool or other fleece containing 0.5-8% of polyvinyl alcohol fibres with a hot aqueous liquid, removing excess water, and drying between 100‹ C. and 150‹ C. Specification 876,444 is referred to.

Production of Microporous Sheet Structures Based on Poly (Thio) Ether Urethanes

... 1,161,746. Laminates. FARBENFABRIKEN BAYER A.G. 1 Nov., 1966 [5 Nov., 1965], No. 48981/66. Heading B5N. [Also in Divisions B2 and C3] Microporous polyurethane sheet structures permeable to water vapour are prepared by the reversal process by spraying on to a support a solution of 3 to 50% solids content and a Ford viscosity of 10 to 120 sec. (4 mm. outflow nozzle at spray temperature) of the following components: (a) a reaction product of (i) a poly- (thio)ether and/or a poly(thio)ether urethane or urea containing hydroxyl and/or amino groups and having a M.W. of 500 to 20,000; (ii) if desired, a chain extender of M.W. below 500 and (iii) a polyisocyanate in an amount of 90 to 150% based on the total reactive hydrogen atoms and comprising 0À03 to 0À5 equivalent per cent of the reaction product; (b) 2 to 50% by weight of (a) of a polyisocyanate and/or formaldehyde or a formaldehyde donor; and (c) if desired up to 50 equivalent per cent excess, based on polyisocyanate (b) of a further compound ...

Improved surge management fibrous nonwoven web for personal care absorbent articles and the like

NON-WOVEN FABRICS

... 1453701 Laminated fibres IMPERIAL CHEMICAL INDUSTRIES Ltd 6 Dec 1973 [8 Dec 1972] 56676/72 Heading B5N A bonded fibrous sheet material comprises a non-woven web of fibres or filaments which include at least a proportion of multicomponent fibres and a scrim fabric attached to one face of said non-woven web at least in part by bonds formed between said scrim fabric and fibres or filaments of the web oriented in planes perpendicular or substantially perpendicular to the plane of the sheet, said bonds being derived from the multicomponent fibres. The bonded fibrous sheet may be made by forming a non- woven web from fibres at least a proportion of which are multicomponent fibres which can be activated into an adhesive state, placing a scrim fabric on one side of the non-woven web and needle punching the resultant assembly from the side of the non-woven web opposite to that contacting the scrim fabric in a needle loom and finally treating the needle-punched assembly to activate the multicomponent ...

Improvements in impedance testing devices for electrical distribution networks

... 809,003. Resistance; impedance measurement. FOSTER TRANSFORMERS Ltd., and JENNINGS, R. E. May 25, 1956 [June 1, 1955], No. 15709/55. Class 37. In testing the impedance between earth and neutral or between main and subsidiary earths of a distribution network a connection socket of the network having line L, neutral N and earth E conductors is flexibly connected to apparatus wherein a neon lamp 1 between the neutral and earth inputs lights when line and neutral are transposed and a relay 2 between earth and line inputs operates on correct connection thereof to close contacts 21, 22 to energize the primary 3 of a transformer over reversing switch 4. A secondary 31 wound to develop a voltage dependent on the current load thereupon is connected between the neutral and earth conductors and through a three-way range switch 71 to selected tapping points of a voltage divider 41, 42, 43, 44, while a secondary 32 closely coupled to the primary and decoupled from secondary 31 develops a constant reference ...

Moulded plastics material

Moulded plastics material having an attractive wood-like appearance and a high impact strength is produced by subjecting a tow or fabric of filaments of an acrylonitrile copolymer to the action of steam at a temperature of at least 115 DEG C, at a pressure of at least 0.7 kg/cm<2> (gauge) (10 psig) and moulding the tow or fabric within a shaping enclosure. The steam treatment can be carried out while confining the tow within a shaping enclosure or steam treatment can be followed by moulding. A tow of filaments may be shaped by being drawn through a fixed die or the tow or fabric may be compression moulded.

Process for the manufacture of non-woven fibrous sheet materials

... 882,359. Agglutinated fibrous materials; paper &c. made from synthetic filaments. FARBWERKE HOECHST A.G. Feb. 13, 1958 [Feb. 13, 1957], No. 4819/58. Classes 96 and 140. Non-woven fibrous sheet material is made by bringing into sheet form a mass of fibres consisting wholly or partly of fibres of polyvinyl alcohol or a water-soluble derivative or copolymer thereof or fibres obtained from a mixture of polyvinyl alcohol with up to 20%, based on the weight of the polyvinyl alcohol, of another water-soluble linear polymer, said fibres being capable of swelling in water at temperatures from 40‹ to 90‹ C. with retention of fibrous structure, then heating the sheet material in the presence of water at a temperature such that the said fibres swell with retention of their fibrous structure and finally drying the resulting sheet material. Specified derivatives of polyvinyl alcohol are the partial acetates with formaldehyde, acetaldehyde, pyridine aldehyde or glyoxylic acid whereas the copolymers specified ...

Improved abrasive articles comprising adhesive bonded fibrous materials

... 884,204. Agglutinated fibrous materials; laminates. MINNESOTA MINING & MANUFACTURING CO. Feb. 21, 1958 [Feb. 21, 1957], No. 5737/58. Class 140. [Also in Group XXIII] An abrasive article comprises a non-woven open skeletal structure of resilient springy fibrous members incorporating an adhesive, randomly bonding members to each other, and abrasive grains also bonded to the members, the article containing from 75 to 95% by volume of uniformly distributed voids. Specified fibres are nylon, polyethylene terephthalate and latex - treated cotton threads. Specified abrasives are silicon carbide, aluminium oxide, cerium oxide, emery, quartz and tripoli. Specified adhesives are a solution of phenol aldehyde resin in ethylene glycol monoethyl ether, an epoxy resin consisting of the reaction product of bisphenol A and epichlorhydrin, maleic anhydride-propylene glycol polyesters, rigid polyurethane resins, animal glue, polystyrene, polyvinyl chloride, polyacrylates and polyamides. As shown, fibres ...

FEATHER/SPRING FILLING, PROCEDURE AND DEVICE

Нетканый огнестойкий утеплительный материал

Полезная модель Нетканый огнестойкий утеплительный материал для формирования подкладочного слоя для всех видов одежды, изделий специального назначения и аксессуаров, преимущественно в производстве высокотехнологичной верхней одежды для защиты от термических рисков. Решаемая задача: одновременное повышение термостойкости и суммарного теплового сопротивления утеплительного материала при высокой прочности и огнестойкости. Сущность полезной модели: нетканый огнестойкий утеплительный материал, включающий смесь полимерных волокон и бикомпонентных волокон, объединенных в полотно термическим скреплением, выполненный в виде трех слоев - верхнего, нижнего и внутреннего, причем верхний и нижний слои имеют более высокую прочность, чем внутренний слой, дополнительно содержит огнестойкую вискозу, при этом слои сформированы горизонтальной раскладкой смеси волокон, а содержание волокон в смеси с учетом допустимых отклонений составляет, %:Окисленное полиакрилонитрильное волокно с линейной плотностью 0,22 текс - 50Огнестойкая вискоза с линейной плотностью 0,33 текс - 15Бикомпонентное волокно с линейной плотностью 0,44 текс - 35Верхний и нижний слои нетканого огнестойкого утеплительного материала могут быть сформированы дополнительным термическим скреплением наружных участков материала горячими валами каландра. Неровнота по массе полотна нетканого огнестойкого утеплительного материала может составлять не более 5%. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК A41D 27/02 B32B 33/00 D04H 1/54 C09K 21/00 (11) (13) 203 722 U1 (2006.01) (2006.01) (2012.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК A41D 27/02 (2021.02); B32B 33/00 (2021.02); C09K 21/00 (2021.02); D04H 1/54 (2021.02) (21)(22) Заявка: 2020121319, 22.06.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью "С2 ГРУПП" (RU) Дата регистрации: 16.04.2021 (56) Список документов, цитированных в отчете о ...

Liquid-pervious fibrous non-woven fabric

A liquid-pervious fibrous non-woven fabric includes staple fibers made of thermoplastic synthetic resin fused together which is formed on its upper surface with a plurality of ridges, and a plurality of grooves extending in parallel in a longitudinal direction. The ridges and grooves are arranged alternately in a transverse direction. On the upper surface, some of the staple fibers extend across the ridges to the adjacent grooves on each side of the ridges and are, in the respective grooves, fused to the staple fibers of a different type from the former staple fibers.

Antistatic ultrafine fiber and method for producing the same

According to the present invention, there are provided a polyester ultrafine fiber excellent in durability and having an antistatic property, and a method for producing the same. Further, there are provided an antistatic polyester ultrafine fiber capable of being imparted with various functions such as ultraviolet blocking effect, cation dyeability, flame retardancy, spun-like bulkiness, soft touch and resilience of the surface, reboundability, dryness, naturalness, and spunize appearance, wool-like touch feel, wrinkle recoverability, and water absorbing/quick drying property, by introduction of a third component into the antistatic polyester ultrafine fiber, combination with other fibers, change in cross sectional shape, and the like, and a method for producing the same.

Dispersible nonwoven wipe material

The presently disclosed subject matter relates to a dispersible, nonwoven multistrata wipe material that is stable in a wetting liquid and flushable in use. More particularly, the presently disclosed subject matter relates to multilayered structures including, but not limited to, two, three, or four layers to form the dispersible nonwoven wipe material. The layers contain combinations of cellulosic and noncellulosic fibers, and optionally a binder or additive.

Porous Multilayer Articles and Methods of Making

Porous multilayer articles and methods of making are disclosed. Multicomponent polymeric fibers are introduced into a forming chamber and are deposited onto a first porous substrate. The multicomponent fibers are then bonded to each other to form a porous coherent web, and the porous coherent web is bonded to the first porous substrate, so as to form a porous multilayer article. The porous coherent web contains particles that are bonded to the multicomponent fibers of the web. The particles in the porous coherent web may be e.g. abrasive, absorbent, etc.

Rugged elastic nonwoven fabric and method for manufacturing the same

To provide a rugged elastic nonwoven fabric, in which a first fibrous layer containing heat-shrinkable fibers ( 1 A) being latent crimp conjugate fibers, and a second fibrous layer containing heat-fusible heat-shrinkable fibers ( 2 A) or non-heat-shrinkable fibers ( 2 B) both having smaller shrinkage as compared with the fibers ( 1 A) are laminated, and both of the fibrous layers are partially bonded and united with a number of bonded parts arranged at intervals, wherein a maximum shrinkage development temperature of the first fibrous layer is 135° C. or higher, a melting or softening point of a heat-fusible component of the fibers ( 2 A) or ( 2 B) is 70° C. or higher to 130° C. or lower, the second fibrous layer between the bonded parts is projected in a convex by shrinking of the first fibrous layer, and fibers constituting the first fibrous layer are not bonded with each other.

Water stable compositions and articles comprising starch and methods of making the same

Thermoplastic polymer compositions comprising starch and articles made therefrom are water stable or may be rendered so. One method of making water stable thermoplastic compositions comprises the steps of mixing destructured starch with polyhydric alcohol and acid, and forming an ester condensation reaction product from at least a portion of the polyhydric alcohol and acid. In some embodiments, a pre-polymer formed from the ester condensation reaction may be provided as a pre-polymer that is mixed with the starch.

Vapor-Permeable, Substantially Water-Impermeable Multilayer Article

This disclosure relates to an article that includes a nonwoven substrate and a film supported by the nonwoven substrate. The film can include a first polymer and a polymer that is immiscible with the first polymer. The first polymer can include a polyolefin and the second polymer can include a polycycloolefin, a polymethylpentene, or a copolymer thereof.

Method for producing polylactic acid-based air-through nonwoven fabric, and polylactic acid-based air-through nonwoven fa

The invention provides a method of producing an air-through nonwoven fabric comprising the steps of: forming a web comprising composite fibers comprising a first polylactic acid and a second polylactic acid having a lower melting point than the melting point of the first polylactic acid; a step of exposing the web to a first air-through treatment in the temperature range of the following temperature T 1 : glass transition temperature of second polylactic acid<T 1 <melting point of second polylactic acid; and a step of exposing the web that has been exposed to the first air-through treatment, to a second air-through treatment in the temperature range of the following temperature T 2 : melting point of second polylactic acid−5° C.≦T 2 ≦melting point of second polylactic acid+15° C., to produce an air-through nonwoven fabric, wherein the degree of crystallinity of the air-through nonwoven fabric is in the range of 44% to 68%.

Nonwoven nanofiber webs containing chemically active particulates and methods of making and using same

Nonwoven fibrous webs including a multiplicity of discrete fibers, a population of sub-micrometer fibers having a population median diameter less than one micrometer adjoining the discrete fibers, and a multiplicity of chemically active particulates secured to the nonwoven fibrous web. In some embodiments, more than 0% and less than 10% wt. of the nonwoven fibrous web is made of discrete fibers that are thermoplastic polymeric fibers, and which optionally at least partially melt and coalesce to secure the discrete polymeric fibers to each other. In certain embodiments, at least some of the particulates are bonded to the thermoplastic polymeric fibers. In other embodiments, at least some of the particulates are secured within interstices of the fibrous web, without substantial bonding to the discrete fibers. Methods of making and using such nonwoven fibrous webs are also described.

Patterned air-laid nonwoven electret fibrous webs and methods of making and using same

Nonwoven electret fibrous webs including randomly oriented discrete fibers comprising electret fibers, the webs including a multiplicity of non-hollow projections extending from a major surface of the nonwoven electret fibrous web, and a multiplicity of substantially planar land areas formed between each adjoining projection in a plane defined by and substantially parallel with the major surface. In some exemplary embodiments, the randomly oriented discrete fibers include multi-component fibers having at least a first region having a first melting temperature and a second region having a second melting temperature, wherein the first melting temperature is less than the second melting temperature. At least a portion of the oriented discrete fibers are bonded together at a plurality of intersection points with the first region of the multi-component fibers. In certain embodiments, the patterned air-laid nonwoven electret fibrous webs include particulates. Methods of making and using patterned electret fibrous webs are also disclosed.

Nonwoven Fabrics Made From Polymer Blends And Methods For Making Same

The present invention is directed to polymer blends for use in nonwoven fabric applications, and to fabrics formed from the polymer blends. In one or more embodiments, the polymer blends comprise from about 70 to about 99.9 wt %, based on the total weight of the composition, of a first propylene-based polymer and from about 0.1 to about 30 wt % of a second propylene-based polymer. The first polymer has a melt flow rate of from about 100 to about 5,000 g/10 min, and the second polymer has a melt flow rate of from about 1 to about 500 g/min, and the second polymer has either a lower melt flow rate or a higher triad tacticity than the first polymer.

Assembled intermediate comprising staple fiber nonwoven web and articles

An assembled intermediate is described comprising a fluid transport element proximate an absorbent material is described. The fluid transport element comprises a thermoplastic nonwoven web comprising a plurality of bonded staple fibers having an average diameter of 20 to 500 microns and the web has a thickness of 3 to 20 mm, a density ranging from 0.01 to 0.10 g/cm 3 , and a work of compression no greater than 20 kJ/m 3 . Also described are articles comprising such assembled intermediate.

MICRO AND NANOFIBER NONWOVEN SPUNBONDED FABRIC

The invention provides methods for the preparation of nonwoven spunbonded fabrics and various materials prepared using such spunbonded fabrics. The method generally comprises extruding multicomponent fibers having an islands in the sea configuration such that upon removal of the sea component, the island components remain as micro- and nanofibers. The method further comprises mechanically entangling the multicomponent fibers to provide a nonwoven spunbonded fabric exhibiting superior strength and durability without the need for thermal bonding. 1. A nonwoven spunbonded fabric , comprising: mechanically entangled multicomponent fibers , said multicomponent fibers having a predetermined average diameter and having an islands in the sea configuration comprising a plurality of island components comprising a first polymer surrounded by a sea component comprising a second polymer; said fabric being devoid of thermal bonds.2. The fabric of claim 1 , wherein the multicomponent fibers comprise an outer surface claim 1 , and wherein the sea component completely surrounds the island components such that none of the island components form any portion of the outer surface of the multicomponent fibers.3. The fabric of claim 2 , wherein the sea component completely surrounds the island components such that the sea component forms a sheath around the island components claim 2 , the sheath having a thickness measured between the outer surface of the multicomponent fiber and the islands nearest the outer surface of the multicomponent fiber.4. The fabric of claim 3 , wherein the sheath has a thickness that is greater than or equal to an average diameter of the island components.5. The fabric of claim 1 , wherein said multicomponent fibers comprise extruded fibers having an average diameter in the range of about 5 μm to about 25 μm.6. The fabric of claim 1 , wherein said multicomponent fibers comprise extruded fibers having an average diameter in the range of about 10 μm to about 20 μm ...

Three-dimensional net-shaped structure and method and apparatus for manufacturing thereof

A manufacturing apparatus of three-dimensional net-like structure includes: a nozzle with a plurality of extrusion holes that are arrayed to extrude and drop downward a thermoplastic synthetic resin in a molten state and thereby form a filament assembly of a plurality of filaments; a pair of chutes arranged across longitudinal faces of the filament assembly to have inclined surfaces that are sloped toward the filament assembly and opposed to each other across a distance that is less than a short side length of the array of the extrusion holes; water supply ports arranged to supply cooling water to the inclined surfaces; and a pair of haul-off machines configured to have endless belts arranged to be in contact with the longitudinal faces of the filament assembly and haul off the filament assembly and opposed to each other across a less distance than the distance between the pair of chutes.

Multilayer filter medium for use in filter, and filter

A multilayer filter medium, which is used as a constituent member of a filter and has a multilayer structure, includes a wet type nonwoven fabric layer A containing 0.5 to 20% by weight, based on layer weight, of short-cut nanofibers which are composed of a fiber-forming thermoplastic polymer, have a single fiber diameter (D) of 100 to 1,000 nm and are cut so that the ratio (L/D) of the length (L) to the single fiber diameter (D) is within the range of 100 to 2,500 and core-sheath conjugate type binder fibers having a single fiber diameter of 5 μm or more, and a nonwoven fabric layer B having a lower density than that of the wet type nonwoven fabric layer A. A filter uses the multilayer filter medium and has the nonwoven fabric layer B arranged on a fluid inlet side.

REINFORCED THERMOPLASTIC ARTICLES, COMPOSITIONS FOR THE MANUFACTURE OF THE ARTICLES, METHODS OF MANUFACTURE, AND ARTICLES FORMED THEREFROM

A composition for the manufacture of a porous, compressible article, the composition comprising a combination of: a plurality of reinforcing fibers; a plurality of polysulfone fibers; and a plurality of polymeric binder fibers; wherein the polymeric binder fibers have a melting point lower than the polysulfone fibers; methods for forming the porous, compressible article; and articles containing the porous, compressible article. An article comprising a thermoformed dual matrix composite is also disclosed, wherein the composite exhibits a time to peak release, as measured by FAR 25.853 (OSU test), a 2 minute total heat release, as measured by FAR 25.853 (OSU test), and an NBS optical smoke density of less than 200 at 4 minutes, determined in accordance with ASTM E-662 (FAR/JAR 25.853). 1. A composition for the manufacture of a porous , compressible article , the composition comprising a combination of:a plurality of reinforcing fibers;a plurality of polysulfone fibers; anda plurality of polymeric binder fibers;wherein the polymeric binder fibers have a melting point lower than the polysulfone fibers.2. The composition of claim 1 , further comprising an aqueous solvent.3. The composition of claim 1 , whereinthe average fiber length of the reinforcing fibers is from 5 to 75 millimeters and the average fiber diameter of the reinforcing fibers is from 5 to 125 micrometers;the average fiber length of the polysulfone fibers is from 5 to 75 millimeters, and the average fiber diameter of the polysulfone fibers is from 5 to 125 micrometers; andthe average fiber length of the polymeric binder fibers is from 2 millimeters to 25 millimeters, and the average fiber diameter of the polymeric binder fibers is from 5 to 50 micrometers.4. A method for forming a porous article claim 1 , the method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'forming a layer comprising a suspension of the composition of in a liquid;'}at least partially removing the liquid from the ...

Non-woven fabric composites from coir fibers

A non-woven fabric composite containing coir fibers and a method for producing such composites. The non-woven fabric composite is comprised of coir fibers, which are large diameter, lignin-rich fibers, with a high viscous flow temperature and a high degradation temperature combined with fibers made of a thermoplastic polymer with a lower viscous flow temperature such as polypropylene (“PP”), polyethylene (“PE”), polylactic acid (“PLA”), and polyester (“PET”) or mixtures thereof. A hot-pressed non-woven fabric composite material prepared from the non-woven fabric composite.

Melt-blown nonwoven fabric, and production process and apparatus for the same

It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 μm, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.

Nonwoven wipe with bonding pattern

A nonwoven wipe has multiplicity of fibers, bonded portions, and unbonded portions. The bonded portions are spaced apart from one another, each bonded portion comprises portions of the fibers that are bonded together, and each bonded portion has a thickness extending perpendicularly between opposite faces of the nonwoven wipe. Each unbonded portion comprises portions of the fibers that are not bonded together, and each unbonded portion has a thickness extending perpendicularly between the opposite faces of the nonwoven wipe. The thicknesses of the unbonded portions is greater than the thicknesses of the bonded portions. The bonded portions are sized and arranged for providing a desirable balance of properties.

THIN MACROPOROUS POLYMERIC FOILS

The invention relates to a foil which includes polymeric fibres, the polymeric fibres of which are interwelded, more particularly heat welded, solvent welded, cold welded, ultrasonically welded and/or at least partly interfused or positively or nonpositively interconnected at the crossing points between the pores at least, a process for production thereof, and also use thereof. 1. A porous foil ,comprising:interwelded polymeric fibres,wherein the polymeric fibres are heat welded, solvent welded, cold welded, ultrasonically welded, at least partly interfused or positively or nonpositively interconnected at crossing points between pores, or any combination thereof.2. The foil according to claim 1 , wherein the foil has a thickness of not more than 100 μm claim 1 , an open area of not less than 20% claim 1 , or both.3. The foil according to claim 1 ,whereinthe polymeric fibres comprise a thermoplastic polymer.4. The foil according to claim 3 ,whereinthe thermoplastic polymer is at least one selected from the group consisting of polyacrylonitrile, polyester, polyamide, polyimide, polyaramid, polyolefin, PTFE, PVDF, PES, and PUR.5. The foil according to claim 1 ,whereinthe polymeric fibres comprise a thermoplastic polymer, a nonthermoplastic polymer, a core-shell fibre, or a coextrudate.6. A process for producing the foil according to claim 1 , the process comprising:densifying a woven or loop-formingly knitted fabric comprising the polymeric fibres one or more times under an area or line pressure of not more than 500 N/mm and a temperature of not more than 50% below a melting temperature of a polymer with the lowest melting temperature,wherein the woven or loop-formingly knitted fabric comprises thermoplastic polymeric fibres.7. The process according to claim 6 ,whereinthe woven or loop-formingly knitted fabric is densified two or more times, andevery subsequent densification differs from a preceding densification in at least one of line pressure, nip size, and ...

Electrospinning of ptfe with high viscosity materials

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.

Nonwoven Fabric and Method and Apparatus for Manufacturing the Same

A nonwoven fabric includes a plurality of discontinuous fibers, a plurality of natural keratin fibers, and a plurality of meltblown fibers. The discontinuous fibers, the natural keratin fibers, and the meltblown fibers form a continuous bonding web structure.

DIMENSIONALLY STABLE BONDED NONWOVEN FIBROUS WEBS

A dimensionally stable bonded nonwoven fibrous web formed by extruding melt blown fibers of a polymeric material, collecting the melt blown fibers as an initial nonwoven fibrous web, and annealing the initial nonwoven fibrous web with a controlled heating and cooling operation, is described. The bonded nonwoven fibrous web shrinkage is typically less than 4 percent relative to the initial nonwoven fibrous web. 1. A bonded nonwoven fibrous web comprising melt blown fibers having a diameter in a range of 1 micrometer to 20 micrometers , wherein the melt blown fibers are substantially free of strain induced crystallization.2. The bonded nonwoven fibrous web of claim 1 , which is dimensionally stable at a temperature in a range of 80° C. to 200° C. for at least 2 hours.3. The bonded nonwoven fibrous web of claim 1 , exhibiting a shrinkage less than 4 percent relative to a non-bonded nonwoven fibrous web of the same composition.4. The bonded nonwoven fibrous web of claim 1 , wherein the melt blown fibers of the bonded nonwoven fibrous web are substantially unoriented.5. The bonded nonwoven fibrous web of claim 1 , wherein the melt blown fibers of the bonded nonwoven fibrous web are essentially discontinuous.6. The bonded nonwoven fibrous web of claim 1 , wherein the melt blown fibers of the bonded nonwoven fibrous web are at least monocomponent.7. The bonded nonwoven fibrous web of claim 1 , wherein the melt blown fibers of the bonded nonwoven fibrous web comprise polymeric material is selected from the group consisting of polyesters claim 1 , polyamides claim 1 , cyclic polyolefins and combinations thereof.8. The bonded nonwoven fibrous web of claim 7 , wherein the polymeric material comprises poly(ethylene terephthalate).9. The bonded nonwoven fibrous web of claim 7 , wherein the polymeric material comprises poly(lactic acid).10. The bonded nonwoven fibrous web of claim 1 , wherein the diameter of the melt blown fibers is in a range of 1 micrometer to 10 micrometers.11 ...

Nonwoven Fabrics Comprised of Individualized Bast Fibers

Nonwoven textile fabrics in accordance with the present invention are formed primarily of individualized bast fibers substantially free of pectin. The nonwoven fabric can include staple fibers to a lesser extent than the individualized bast fibers. Individualized bast fibers include fibers derived from the flax and hemp plants. The nonwoven textile fabric is formed into a web while in a dry state and subsequently bonded to produce a nonwoven fabric. 1. A nonwoven fabric comprising a majority of individualized fibers which are substantially straight , plant-based , and substantially pectin-free and have a mean length greater than 6 millimeters (min).2. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , plant-based substantially pectin-free fibers are bast fibers.3. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , plant-based substantially pectin-free fibers are fibers extracted from flax claim 1 , hemp claim 1 , jute claim 1 , ramie claim 1 , nettle claim 1 , Spanish broom claim 1 , kenaf plants claim 1 , or any combination thereof.4. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , plant-based substantially pectin-free fibers have less than 10% by weight of the pectin content of the naturally occurring fibers from which the substantially pectin-free fibers are derived.5. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , plant-based substantially pectin-free fibers have less than 15% by weight of the pectin content of the naturally occurring fibers from which the substantially pectin-free fibers are derived.6. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , plant-based substantially pectin-free fibers have less than 20% by weight of the pectin content of the naturally occurring fibers from which the substantially pectin-free fibers are derived.7. The nonwoven fabric of claim 1 , wherein the substantially straight claim 1 , ...

Composite fiber having a high surface area and flexibility and method for manufacturing the same, and substrate containing the composite fiber and method for manufacturing the same

The present invention provides a composite fiber having a high surface area and flexibility and a method for manufacturing the same, and a substrate containing the composite fiber and a method for manufacturing the same. The composite fiber contains a first component and a second component, and has a maximum diameter and a circumference. The first component has a central portion and a plurality of extension portions. A maximum length of the central portion is less than three quarters of the maximum diameter. The first component is in an amount of 50 wt % to 95 wt %, based on the total weight of the composite fiber. The second component has a plurality of outer portions disposed between two extension portions, and the second component is in an amount of 5 wt % to 50 wt %, based on the total weight of the composite fiber.

Antimicrobial cleaning cloth and a method and system for manufacturing the same

The present subject matter provides an antimicrobial cleaning cloth, including: nonwoven fabric fibers; and copper fibers. A method for manufacturing the antimicrobial cleaning cloths includes: mixing nonwoven fabric fibers and copper fibers; carding the nonwoven fabric fibers and copper fibers; cross-lapping the nonwoven fabric fibers and copper fibers; needle-punching the nonwoven fabric fibers and copper fibers to form a nonwoven fabric comprising copper fibers; slitting the nonwoven fabric comprising copper fibers to form nonwoven fabric sheets; winding the nonwoven fabric sheets to form nonwoven fabric sheet rolls; and cutting the nonwoven fabric sheet rolls to antimicrobial cleaning cloths. A system for manufacturing the antimicrobial cleaning cloth and additional embodiments of the antimicrobial cleaning cloth, the method of manufacturing the same and the system for manufacturing the same are disclosed herein as well.

NONWOVEN SOLID MATERIAL SUITABLE FOR TOPICAL APPLICATIONS

The invention relates to a nonwoven solid material, preferably a cosmetic or dermatological nonwoven solid material, comprising a plurality of fibers, wherein said fibers comprise a body comprising at least one polymeric material and a body coating comprising at least one hydrophilic polymer, said nonwoven solid material further comprising at least one releasable cosmetic ingredient or composition. The invention relates to a face mask, a manufacturing process and applications of said nonwoven solid material or face mask. 1. A nonwoven solid material , preferably a cosmetic or dermatological nonwoven solid material , comprising a plurality of fibers , wherein said fibers comprise a body comprising at least one polymeric material and a body coating comprising at least one hydrophilic polymer , said nonwoven solid material further comprising at least one releasable cosmetic ingredient or composition.2. The nonwoven solid material according to claim 1 , wherein said fibers are conjugate fibers comprising a body made from at least two polymeric materials and a body coating comprising at least one hydrophilic polymer.3. The nonwoven solid material according to claim 1 , wherein said body comprises at least one polymeric material forming the core of the body claim 1 , at least one polymeric material forming a sheath of the body claim 1 , and at least one hydrophilic polymer forming said body coating.4. The nonwoven solid material according to claim 1 , wherein said nonwoven solid material comprises at least one a releasable ingredient or composition providing a skin benefit to a keratin material.5. A face mask comprising said nonwoven solid material according to .6. A process for manufacturing a nonwoven solid material according claim 1 , said process comprising (i) extruding at least one polymeric material claim 1 , (ii) forming a plurality of fibers comprising said at least one polymeric material claim 1 , (iii) coating said fibers by at least one hydrophilic polymer ...

Nonwoven fabric for outer sheet of absorbent article, and absorbent article including the nonwoven fabric as outer sheet

A nonwoven fabric for an outer sheet of an absorbent article has a liquid-impermeable sheet having moisture vapor permeability, the nonwoven fabric having a thickness direction and a planar direction, and a first surface and a second surface, the nonwoven fabric including thermoplastic resin fibers, and cellulosic fibers that are cellulosic fibers of which at least a portion form a plurality of fiber masses, the nonwoven fabric comprising a plurality of gaps that are adjacent to first regions of each of the plurality of fiber masses that are facing the first surface, wherein each of the plurality of fiber masses are not joined with the thermoplastic resin fibers.

SHORT FIBER NONWOVEN FABRIC, LOOP MEMBER FOR SURFACE FASTENER, AND SANITARY ARTICLE

One of challenges to be overcome is providing short-fiber nonwoven and loop component with appropriate balance of air-permeability and softness. One of solutions is loop component for mechanical fastener including top layer comprising short-fiber nonwoven and substrate layer comprising short-fiber nonwoven, wherein ratio [average fineness (denier) of the top layer] against [average fineness (denier) of the substrate layer] is 1.5-30, softness of the substrate is less than 60 mm in MD direction and less than 50 mm in CD direction by 45 degree cantilever method, and air permeability of the substrate is 10 to 100 cm3/sec*cm2 by Frajour type method. 1. Loop component for mechanical fastener including top layer comprising short-fiber nonwoven and substrate layer comprising short-fiber nonwoven , whereinratio [average fineness (denier) of the top layer] against [average fineness (denier) of the substrate layer] is 1.5-30,softness of the substrate is less than 60 mm in MD direction and less than 50 mm in CD direction by 45 degree cantilever method, andair permeability of the substrate is 10 to 100 cm3/sec*cm2 by Frajour type method.2. The loop component described in claim 1 , the substrate layer is compressed with temperature that is lower than the melting point of the surface of the short fiber in the substrate layer.3. The loop component described in claim 1 , the substrate layer is compressed with temperature that is lower than 120 degrees Celsius.4. The loop component described in claim 1 , the substrate layer is compressed with pressure of more than 7 MPa.5. The loop component of described in claim 1 , 90 degree peel strength is between 0.2N/25.4 mm and 5.0N/25.4 mm against hook component claim 1 , when loop and hook components are detached (20th detached) after repeatedly attached/detached 20 times.6. The loop component described in claim 1 , the loop layer includes fused short-fiber nonwoven.7. The loop component described in claim 6 , the short-fiber nonwoven in ...

ASSEMBLED INTERMEDIATE COMPRISING STAPLE FIBER NONWOVEN WEB AND ARTICLES

An assembled intermediate is described comprising a fluid transport element proximate an absorbent material is described. The fluid transport element comprises a thermoplastic nonwoven web comprising a plurality of bonded staple fibers having an average diameter of 20 to 500 microns, a thickness of at least 3, and a density ranging from 0.01 to 0.10 g/cm. Also described are articles comprising such assembled intermediate. 1. An assembled intermediate consisting of a thermoplastic nonwoven web prepared from a hydrophobic polymer proximate an absorbent material; wherein the nonwoven web consists of a plurality of bonded staple fibers having an average diameter of 20 to 500 microns and the nonwoven web has a thickness of at least 3 mm , a density ranging from 0.01 to 0.06 g/cm , and a work of compression no greater than 20 kJ/m; and the nonwoven web is free of hydrophilic fibers and superabsorbent polymer such that the nonwoven web exhibits a vertical wicking of saline solution of no greater than 5 mm.2. The assembled intermediate of wherein the staple fibers have an average diameter of no greater than 200 microns.3. The assembled intermediate of wherein the nonwoven web has a work of compression of no greater than 20 kJ/m.4. The assembled intermediate of wherein the nonwoven web has a work of compression of no greater than 15 kJ/m.5. The assembled intermediate of wherein the nonwoven web has a basis weight ranging from 100 gsm to 400 gsm.6. The assembled intermediate of wherein the nonwoven web has a basis weight less than 300 gsm.7. The assembled intermediate of wherein the nonwoven web has a thickness no greater than 10 mm.8. The assembled intermediate of wherein the nonwoven web exhibits any one or combination of fluid transport rate properties selected froma fluid transport rate of no greater than 15 seconds with a weight of 4 kg;a fluid transport rate of no greater than 30 seconds with a weight of 12 kg; anda fluid transport rate of no greater than 60 seconds ...

Electrospinning of ptfe with high viscosity materials

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat.

BICOMPONENT NONWOVEN FABRIC HAVING AN IMPROVED STRENGTH AND AIR PERMEABILITY AND MANUFACTURING METHOD THEREOF

A nonwoven fabric having improved air permeability and strength is formed with a filament of sheath-core shape, the core part being constituted with blending a polyethylene terephthalate (PET) having melting point (Tm) of 250˜270° C. of 40 to 60 parts by weight with a polytrimethylene terephthalate (PTT) having melting point of 215˜235° C. of 10 to 50 parts by weight, the sheath part being constituted with a polyethylene terephthalate (PET) having melting point of 210˜230° C. of 10 to 30 parts by weight, and the core and sheath parts being spun with conjugate respectively, and formed with a web. The bicomponent nonwoven fabric uses a bicomponent polymer and improved spin method with conjugate and blending spinning to produce PTT nonwoven fabric having an improved strength and air permeability and soft property and proper resistance which are required for a variety of uses and to produce it economically. 1. The bicomponent nonwoven fabric having improved strength and air permeability which is formed with a filament of sheath-core shape , wherein the core part is constituted with blending a polyethylene terephthalate (PET) having melting point (Tm) of 250 18 270° C. of 40 to 60 parts by weight with a polytrimethylene terephthalate (PTT) having melting point of 215˜235° C. of 10 to 50 parts by weight , and the sheath part is constituted with a polyethylene terephthalate (PET) having melting point of 210˜230° C. of 10 to 30 parts by weight , and the said core and sheath parts are spun with conjugate respectively , and then formed with a web.2. The nonwoven fabric of claim 1 , wherein the said nonwoven fabric is formed by heat pressing the said web with free-embossing or embossing pattern of single or multi layer.3. The nonwoven fabric of claim 1 , wherein a basic weight of the said nonwoven fabric is 40 to 100 g/m.4. The nonwoven fabric of claim 1 , wherein the air permeability of the said nonwoven fabric is above 200 ccs.5. The nonwoven fabric of claim 1 , wherein the ...

NONWOVEN FABRIC AND PROCESS FOR FORMING THE SAME

The present invention relates to a nonwoven fabric comprising a plurality of polypropylene-containing fibers that form a nonwoven web, which fibers in addition contain a slip agent, the web has a side which is provided with an alternating pattern which consists of individualized bonded areas which bonded areas are in the form of rods which are arranged in the cross direction of the web, the alternating pattern of individualized bonded areas defines a non-bonded area, the web has a basis weight on the range of from 5-25 g/m, the surface of the bonded areas is in the range of 5-20% of the total surface of the side, and the surface of the non-bonded area is in the range of 80-95% of the total surface of the side. The present invention further relates to a process for forming the nonwoven fabric. 1. A nonwoven fabric comprising a plurality of polypropylene-containing fibers that form a nonwoven web , which fibers in addition contain a slip agent , the web has a side which is provided with an alternating pattern which consists of individualized bonded areas which are in the form of rods which are arranged in the cross direction of the web , the alternating pattern of individualized bonded areas defines a non-bonded area , the web has a basis weight on the range of from 5-25 g/m , the surface of the bonded areas is in the range of 5-20% of the total surface of the side , and the surface of the non-bonded area is in the range of 80-95% of the total surface of the side.2. A nonwoven fabric according to claim 1 , wherein the surface of the non-bonded area is in the range of from 8-15% of the total surface area of the side.3. A nonwoven fabric according to claim 2 , wherein the surface of the non-bonded area is in the range of from 85-92% of the total surface area of the side.4. A nonwoven fabric process according to any one of - claim 2 , wherein the slip agent is a hydrocarbon compound having one or more functional groups selected from hydroxide claim 2 , aryls and ...

FIBER STRUCTURE AND METHOD FOR PRODUCING SAME

A fiber structure includes crimped staple fibers and heat-bonding conjugate staple fibers mixed in a specific weight ratio, the heat-bonding conjugate staple fibers having, as a heat-bonding component disposed on the surface thereof, a thermoplastic resin having a melting point lower by 40° C. or more than that of a thermoplastic resin constituting the crimped staple fibers, the fiber structure having scattered fixing points in which the heat-bonding conjugate staple fibers are heat-fused and intersect together and/or scattered fixing points in which the heat-bonding conjugate staple fibers and the crimped staple fibers are heat-fused and intersect together, the fiber structure having a specified thickness and density and having a laminated structure of three or more layers, wherein the hardness ratio between an intermediate layer portion and a surface layer portion defined when the fiber structure is equally divided into three portions is 0.60 or more. 1. A fiber structure comprising crimped staple fibers and heat-bonding conjugate staple fibers mixed in a weight ratio of 90/10 to 10/90 , the heat-bonding conjugate staple fibers having , as a heat-bonding component disposed on a surface thereof , a thermoplastic resin having a melting point lower by 40° C. or more than that of a thermoplastic resin constituting the crimped staple fibers ,the fiber structure having scattered fixing points in which the heat-bonding conjugate staple fibers are heat-fused and intersect together and/or scattered fixing points in which the heat-bonding conjugate staple fibers and the crimped staple fibers are heat-fused and intersect together,{'sup': '3', 'the fiber structure having a thickness of 30 mm or more and a density of 10 kg/mor more,'}the fiber structure having a laminated structure of three or more layers in at least a thicknesswise direction, wherein a hardness ratio between an intermediate layer portion and a surface layer portion defined when the fiber structure is equally ...

Nonwoven web with improved cut edge quality, and process for imparting

A process for producing a nonwoven web material with improved edge quality, and the product thereof, are disclosed. The process may include the steps of forming a batt of polymeric fibers; consolidating the batt in a z-direction and thereby forming a nonwoven web material, conveying the nonwoven web material to a nip between a bonding roller and anvil roller, and impressing a pattern of bond impressions into the nonwoven web material, the bond impressions lying a long a cut path. When the web is subsequently cut along the cut path, fibers proximate the cut path are immobilized by the bonds, providing for relatively neater, cleaner cut edges and reducing the number of loose fibers that may be released into the plant environment in downstream processing operations.

SHEET FOR PACKAGING EDIBLE MEAT, AND CASING FOR PACKAGING EDIBLE MEAT

A sheet for packaging edible meat is provided that includes a layer A and a layer B thermally adhered to each other. In the sheet, the layer A is a wet-laid nonwoven fabric produced by mixing a first core-in-sheath fiber (a) having a core made of polyester and a sheath made of polyethylene, a second core-sheath fiber (b) having a core made of polyester and a sheath made of a low-melting-point polyester, and an ultrafine polyester fiber (c). The layer B is a spunbonded nonwoven fabric produced from a third core-sheath fiber having a core made of polyester and a sheath made of polyethylene. Also a casing for packaging edible meat is provided that is formed from the sheet for packaging edible meat. 1. A sheet for packaging edible meat comprising a layer A and a layer B thermally adhered to each other , whereinthe layer A is a wet-laid nonwoven fabric produced by mixing a first core-sheath fiber (a) having a core made of polyester and a sheath made of polyethylene, a second core-sheath fiber (b) having a core made of polyester and a sheath made of a low-melting-point polyester, and an ultrafine polyester fiber (c), andthe layer B is a spunbonded nonwoven fabric formed of a third core-sheath fiber having a core made of polyester and a sheath made of polyethylene.2. The sheet for packaging edible meat according to claim 1 , wherein the melting point of the low-melting-point polyester of the fiber (b) is 110° C. or higher and lower than 140° C.3. The sheet for packaging edible meat according to claim 1 , wherein the thickness of the fiber (c) is 0.11 to 0.55 decitex (dtx).4. The sheet for packaging edible meat according to claim 1 , wherein the basis weight thereof is 25 to 90 g/m.5. The sheet for packaging edible meat according to claim 1 , having a toughness value of the sheet for packaging edible meat of 150 or more and 400 or less claim 1 , wherein the toughness value is determined by the following formula:{'br': None, 'i': 'N', 'Toughness value=|tensile strength (/15 ...

NONWOVEN FABRIC COMPRISED OF CRIMPED BAST FIBERS

The invention relates to a nonwoven fabric containing at least a portion of individualized bast fibers with a mean length of greater than about 6 mm which have been treated to produce a crimp, and which can be further coated with one or more thermoplastic polymers to ensure compatibility with QAC sanitizers, and which typically having a reduced level of naturally occurring pectin. The coating and crimp of the bast fibers in these nonwoven fabrics is beneficial to forming a drylaid, airlaid or wetlaid nonwoven fabric that has desirable properties related to performance in a variety of nonwoven product applications. 1. A nonwoven fabric comprising crimped plant based fibers which have a mean length of greater than about 6 mm.2. The nonwoven fabric of claim 1 , wherein the plant based fibers are bast fibers.3. The nonwoven fabric of claim 2 , wherein the plant based fibers are extracted from flax claim 2 , hemp claim 2 , jute claim 2 , ramie claim 2 , nettle claim 2 , Spanish broom claim 2 , kenaf plants claim 2 , or any combination thereof.4. The nonwoven fabric of claim 2 , wherein the fibers have been treated chemically or mechanically to impart a planned crimp of at least 1 claim 2 , and up to 8 claim 2 , crimps per centimeter.5. The nonwoven fabric of claim 2 , where said crimped bast fibers have been cleaned to remove naturally occurring pectin.6. The nonwoven fabric of claim 2 , wherein the nonwoven fabric comprises 5-49% by weight of the crimped bast fibers.7. The nonwoven fabric of claim 2 , wherein the nonwoven fabric comprises 51-100% by weight of the crimped bast fibers.8. The nonwoven fabric of claim 2 , further comprising natural staple fibers claim 2 , man-made staple fibers claim 2 , or a combination thereof claim 2 , the staple fibers being crimped or uncrimped.9. The nonwoven fabric of claim 2 , where the nonwoven fabric is a dry laid claim 2 , air laid claim 2 , or wet laid nonwoven fabric.10. The nonwoven fabric of claim 9 , where the nonwoven ...

Soft Nonwoven Fabric and Method of Manufacturing Thereof

Fabrics having a desirable softness and exhibiting a low lint level are provided. The fabrics include an embossed bonding pattern, in which the embossed bonding pattern includes a plurality of icons (e.g., geometric shapes, caricatures, etc.). The plurality of icons may be defined by a plurality of perimeter bonding points. Additionally, from 1 to about 10 internal bonding points may be located within at least one of the plurality of icons. 114-. (canceled)15. An embossing roll , comprising: a cylindrical base surface area and a plurality of embossing protrusions extending outwardly from the cylindrical base surface and defining an embossing protrusion pattern; the embossing protrusion pattern comprising a (i) a plurality of icons , each of the plurality of icons being defined by a first group of embossing protrusions comprising a plurality of perimeter embossing protrusions and (ii) a plurality of internal embossing protrusions located within at least one of the plurality of icons;wherein the plurality of icons includes a first discrete icon comprising a first plurality of perimeter embossing protrusions and a second discrete icon comprising a second plurality of perimeter embossing protrusions.16. The embossing roll according to claim 15 , wherein the plurality of icons each comprise an icon area from about 1 mmto about 50 mm.17. The embossing roll according to claim 15 , wherein the first discrete icon comprises a first icon area and the second discrete icon comprises a second icon area; wherein the first icon area is different than the second icon area.18. The embossing roll according to claim 15 , wherein each of the plurality of icons include from 2 to 5 internal embossing protrusions.19. The embossing roll according to claim 15 , wherein the embossing roll comprises a total embossing protrusion area comprising from about 3% to about 25% of a total area of the embossing roll.20. (canceled)21. The embossing roll according to claim 15 , wherein each of the ...

Cleaning Product With Low Lint and High Fluid Absorbency and Release Properties

The present disclosure is directed to a wiping product well suited to absorbing a solvent and releasing the solvent onto an adjacent surface. The wiping product can also be constructed so as to have excellent abrasion resistance. The wiping product can be used in numerous applications and is particularly well suited for wiping unfinished surfaces, such as metal surfaces and composite surfaces for removing contaminants, such as oil and grease. The wiping product is made from a hydroentangled and thermally bonded web containing staple fibers and conjugated fibers. 1. A wiper product comprising:a nonwoven web containing a mixture of staple fibers and conjugate fibers, the staple fibers being comprised of regenerated cellulose or a thermoplastic polymer, the staple fibers being present in the nonwoven web in an amount from about 60% to about 90% by weight, the conjugate fibers comprising a core comprising a first polymer and a sheath comprising a second polymer, the conjugate fibers being present in the nonwoven web in an amount from about 10% to about 40% by weight; and 'wherein the fibers contained in the nonwoven web are thermally bonded together and wherein the web has a water capacity of greater than about 5 g/g and has a water delivery of greater than about 4 g/g.', 'a solvent, the nonwoven web being presaturated therewith2. A wiper product as defined in claim 1 , wherein the nonwoven web comprises a hydroentangled web.3. A wiper product as defined in claim 1 , wherein the nonwoven web contains the conjugate fibers in an amount from about 25% to about 40% by weight.4. A wiper product as defined in claim 1 , wherein the nonwoven web has a water delivery of greater than about 5 g/g.5. A wiper product as defined in claim 1 , wherein the nonwoven web has a water capacity of greater than about 5.5 g/g.6. A wiper product as defined in claim 1 , wherein the staple fibers comprise polyester fibers.7. A wiper product as defined in claim 1 , wherein the staple fibers and ...

INTERIOR TRIM PART OF AN AUTOMOTIVE VEHICLE COMPRISING A VELVET FONT LAYER

An interior trim part made by a method that includes the steps of bringing a fiber web onto a conveyor, needlepunching the fiber web to form a base in contact with the conveyor, and introducing a binder component on the base. The binder component introduced on the base is a thermoplastic polymer in solid form. The method includes a step for heating the base to cause the thermoplastic polymer making up the binder component to penetrate the base over a thickness smaller than the thickness of the base. 1. An interior trim part of a motor vehicle , comprising:a web of needlepunched fibers comprising base fibers forming a velvet font layer and a base,a binder component arranged in the base;wherein the fiber web comprises a quantity of strictly more than 0 wt % and of less than 15 wt % of binder fibers that are at least partially fusible,the binder component arranged in the base being a melted solid thermoplastic polymer having penetrated the base over a thickness smaller than the thickness of the base.2. The part according to claim 1 , wherein the binder fibers comprise bicomponent fibers comprising a core and an envelope surrounding the core claim 1 , the melting point of the envelope being lower than that of the core claim 1 , or fibers having a melting point lower than the melting point of the base fibers of the fiber web.3. The part according to any one of claim 1 , wherein the maximum penetration thickness of the thermoplastic polymer making up the binder component in the base after at least partial melting is less than 30% of the thickness of the base.4. The part according to claim 1 , wherein the melt flow index of the thermoplastic polymer making up the binder component is comprised between 50 g/10 mn and 70 g/10 mn.5. The part according to claim 1 , wherein the base fibers are formed with a base of a thermoplastic polymer of the same nature as the thermoplastic polymer making up the binder component claim 1 , the thermoplastic polymer of the base fibers in the ...

Airlaid substrates having at least one bicomponent fiber

An airlaid substrate includes at least one bicomponent fiber having a first region and a second region. The first region includes polypropylene and the second includes a blend of an ethylene-base polymer and an ethylene acid copolymer. The ethylene-base polymer has a density from 0.920 g/cm3 to 0.970 g/cm3 and a melt index (I2) from 0.5 g/10 min to 150 g/10 min. The ethylene acid copolymer includes the polymerized reaction product of from 60 wt % to 99 wt % ethylene monomer and from 1 wt % to 40 wt % unsaturated dicarboxylic acid comonomer, based on the total weight of the monomers in the ethylene acid copolymer. The ethylene acid copolymer having a melt index (I2) from 0.5 g/10 min to 500 g/10 min.

BLENDED NONWOVEN FABRIC, FILTER MEDIUM, AND FILTER UNIT

The present invention provides a filter medium causing a low pressure drop. The present invention is a filter medium including a porous fluororesin membrane and an air-permeable support member laminated on at least one surface of the porous fluororesin membrane. In this filter medium, the air-permeable support member is a blended nonwoven fabric containing: core-sheath fibers (A) having a polyester core and a polyolefin sheath; polyester fibers (B); and core-sheath fibers (C) having a polyester core and a copolymerized polyester sheath. 1. A filter medium comprising: a porous fluororesin membrane; and an air-permeable support member laminated on at least one surface of the porous fluororesin membrane , whereinthe air-permeable support member is a blended nonwoven fabric comprising: core-sheath fibers (A) having a polyester core and a polyolefin sheath; polyester fibers (B); and core-sheath fibers (C) having a polyester core and a copolymerized polyester sheath.2. The filter medium according to claim 1 , wherein the core-sheath fibers (A) are core-sheath fibers having a polyethylene terephthalate core and a polyethylene sheath claim 1 , the polyester fibers (B) are polyethylene terephthalate fibers claim 1 , and the core-sheath fibers (C) are core-sheath fibers having a polyethylene terephthalate core and a copolymerized polyethylene terephthalate sheath.3. The filter medium according to claim 1 , wherein the blended nonwoven fabric comprises 10 to 40 wt. % of the core-sheath fibers (A) claim 1 , 20 to 80 wt. % of the polyester fibers (B) claim 1 , and 10 to 40 wt. % of the core-sheath fibers (C).4. The filter medium according to claim 1 , wherein the core-sheath fibers (A) have a fineness of 1 to 6 dtex claim 1 , the polyester fibers (B) have a fineness of 6 to 25 dtex claim 1 , and the core-sheath fibers (C) have a fineness of 1 to 6 dtex.5. The filter medium according to claim 1 , wherein the blended nonwoven fabric has a porosity of 65% or more and a weight per ...

METHOD FOR PRODUCING HEAT-RESISTANT RESIN COMPOSITE AND HEATRESISTANT RESIN COMPOSITE

A method may produce a heat-resistant resin composite excellent in heat resistance and bending properties. This heat-resistant resin composite is constituted of a matrix resin and reinforcing fibers dispersed in the matrix resin. The matrix resin is constituted of a heat-resistant thermoplastic polymer having a glass transition temperature of 100° C. or higher, and a polyester-based polymer comprising a terephthalic acid unit (A) and an isophthalic acid unit (B) at a copolymerization proportion (molar ratio) of (A)/(B)=100/0 to 40/60. The proportion of the heat-resistant thermoplastic polymer in the composite is 30 to 80 wt %. 1. A method for producing a heat-resistant resin composite , the method comprising:preparing one or more of the non-woven fabrics to be overlaid with each other; andthermo-compressing one or more of the non-woven fabrics at a temperature of equal to or higher than a flow starting temperature of the heat-resistant thermoplastic fiber to carry out thermo-forming,wherein the non-woven fabrics comprise:a heat-resistant thermoplastic fiber;a reinforcing fiber; anda polyester-based binder fiber suitable to bind other fibers,wherein the heat-resistant thermoplastic fiber has a glass transition temperature of 100° C. or higher, an average fineness of 0.1 to 10 dtex, and an average fiber length in a range of from 0.5 to 60 mm,wherein the polyester-based binder fiber comprises a polyester-based polymer comprising a terephthalic acid unit (A) and an isophthalic acid unit (B) in an (A)/(B) molar copolymerization ratio in a range of from 100/0 to 40/60, andwherein a proportion of the heat-resistant thermoplastic fiber in the non-woven fabric is in a range of from 30 to 80 wt.%.2. The method of claim 1 , wherein the polyester-based binder fiber has a degree of crystallinity of 50% or less.3. The method of claim 1 , wherein a (i)/(ii) weight ratio of the (i) polyester-based binder fiber to (ii) the heat-resistant thermoplastic fiber in the heat-resistant ...

SPUN-LAID WEBS WITH AT LEAST ONE OF LOFTY, ELASTIC AND HIGH STRENGTH CHARACTERISTICS

A continuous filament spun-laid web includes a plurality of polymer fibers within the web, the web having a first thickness and the web being free of any thermal or mechanical bonding treatment. Activation of the web results in at least one of an increase from the first thickness prior to activation to a second thickness post activation in which the second thickness is at least about two times greater than the first thickness, a decrease in density of the web post activation in relation to a density of the web prior to activation, the web being configured to withstand an elastic elongation from about 10% to about 350% in at least one of a machine direction (MD) of the web and a cross-direction (CD) of the web, and the web having a tensile strength from about 50 gram-force/cmto about 5000 gram-force/cm. 1. A continuous filament spun-laid web comprising:{'sup': 3', '3', '2', '2, 'a plurality of polymer fibers entangled within the web such that the web has a thickness from about 0.05 mm to about 76 mm, a density from about 0.002 g/cmto about 0.25 g/cm, and at least one of a tensile strength of at least about 300 gram-force/cmand an indentation force deflection (IFD) of at least about 5 gram-force/cmwhen the web is deflected to reduce web thickness by 65%.'}2. The continuous filament spun-laid web of claim 1 , wherein the polymer fibers include two or more different polymer components.3. The continuous filament spun-laid web of claim 2 , wherein at least two of the polymer components comprise polypropylene and polylactic acid.4. The continuous filament spun-laid web of claim 2 , wherein the fibers have cross-sections selected from the group consisting of side-by-side claim 2 , multilobal claim 2 , sheath-core claim 2 , islands-in-the-sea claim 2 , solid round claim 2 , and hollow round.5. The continuous filament spun-laid web of claim 4 , wherein two or more fibers within the web have different fiber cross-sections.6. The continuous filament spun-laid web of claim 1 , ...

BI-COMPONENT FIBER FOR THE PRODUCTION OF SPUNBONDED FABRIC

A bi-component fiber (), in particular for the production of spunbond fabrics (), with a first component () and a second component (), whereby the first component () has a first polymer as an integral part and the second component has a second polymer as an integral part. It is provided that the difference between the melt-flow indices of the first component () and the second component () is less than or equal to 25 g/10 minutes and that the melt-flow indices of the first component () and the second component () in each case are less than or equal to 50 g/10 minutes. 1. Bicomponent fiber for the production of spunbond fabrics , with a first component and a second component , whereby the first component has a first polymer as an integral part and the second component has a second polymer as an integral part ,characterized in thatmelt-flow indices of the first component and the second component differ by an amount that is less than or equal to 25 g/10 minutes, and in that the melt-flow indices of both of the first component and the second component are less than or equal to 50 g/10 minutes.2. Bicomponent fiber according to claim 1 , characterized in that the component with the higher melt-flow index forms an outer surface of the bicomponent fiber viewed in a cross-sectional direction of the fiber.3. Bicomponent fiber according to claim 1 , characterized in that the component with the higher melt-flow index completely surrounds the component with a higher melting point.4. Bicomponent fiber according to claim 1 , characterized in that the difference between the melt-flow indices of the first component and the second component is less than or equal to 20 g/10 minutes.5. Bicomponent fiber according to claim 1 , characterized in that the difference between the melt-flow indices of the first component and the second component is 15 g/10 minutes.6. Bicomponent fiber according to claim 1 , characterized in that the difference between the melt-flow indices of the first ...

Nonwoven Tack Cloth for Wipe Applications

A nonwoven web material that contains fibers formed by compounding at least one polymer with a tackifier is provided. The nonwoven web material can be used as a wipe or tack cloth and can exhibit a dust holding capacity of at least about 10 grams/mand a lint potential of less than about 5 fibers/cm. In addition to containing a tackifier that is compounded with the polymer(s) used to form the fibers of the web, the nonwoven web material can be textured, post-bonded, apertured, or treated with elemental fluorine gas to further improve its dust holding capacity and minimize lint production. In addition, the nonwoven web material leaves minimal residue after contacting a surface. 119-. (canceled)20. A method of forming a tack cloth comprising a nonwoven web material , the method comprising:compounding a first polymer with a second polymer, wherein the first polymer comprises an olefin homopolymer and the second polymer comprises an olefin-based plastomer having a glass transition temperature of less than about 25° C., to form a first polymer blend;forming fibers from the first polymer blend; and{'sup': 2', '2, 'collecting the fibers onto a foraminous surface to form the nonwoven web material, wherein the nonwoven web material exhibits a dust holding capacity of from about 10 grams/mto about 130 grams/m.'}21. The method of claim 20 , further comprising:passing the nonwoven web material through a nip formed by at least one patterned roll; andat the nip, concurrently melt bonding fibers in the nonwoven web material and forming apertures in the nonwoven web material.22. The method of claim 21 , wherein the roll is patterned with raised bonding elements.23. The method of claim 20 , further comprising treating the nonwoven web material with elemental fluorine gas.24. The method of claim 20 , wherein a tackifier is compounded with the first polymer and the second polymer.25. The method of claim 20 , wherein the olefin-based plastomer comprises an ethylene/α-olefin copolymer ...

Sea-island composite fiber, composite ultra-fine fiber, and fiber product

A sea-island composite fiber in which island components are interspersed in a sea component on a fiber cross-section, wherein the island components have a composite structure formed with two or more different polymers joined together, and the ratio (L/D) of the length (L) of the joint section of the island component and the diameter (D) of the composite island component is 0.1 to 10.0. The sea-island composite fiber has satisfactory high-order processability, and therefore can be produced with high productivity and quality using existing equipment, and thin fibers obtained by removing the sea component have functions of structure control while having an excellent tactile impression.

NONWOVEN FABRIC SHEET, AND EXTRACTION FILTER AND EXTRACTION BAG USING THE SAME

The present invention provides a nonwoven fabric sheet for use in extraction filters having high sealing strength and extraction filters manufactured using the nonwoven fabric sheet. The nonwoven fabric sheet includes a first layer including a spunbonded nonwoven fabric formed from a polyester-based resin having an IV value of 0.60 to 1.00, a crystallinity of 30% to 80%, a crystalline orientation of 60% to 95%, and a birefringence (Δn) of 0.040 to 0.100 and provided with a partial thermocompression bonding section whose thermocompression bonding area rate is in the range of 5% to 30%, and a second layer including a meltblown nonwoven fabric formed from a polyester-based resin blown onto a surface of the first layer and solidified to have a crystallinity of 0% to 14%. The extraction filters are formed by sealing by welding the nonwoven fabric sheet with the second layer of the sheet placed inside. 1. A nonwoven fabric sheet comprising:a first layer including a spunbonded nonwoven fabric formed from fibers of a polyester-based resin having an IV value of 0.60 to 1.00, a crystallinity of 30% to 80%, a crystalline orientation of 60% to 95%, and a birefringence (Δn) of 0.040 to 0.100 and provided with a partial thermocompression bonding section having a thermocompression bonding area rate of 5% to 30%; anda second layer including a meltblown nonwoven fabric formed from fibers of a polyester-based resin blown onto a surface of the first layer and solidified, the polyester-based resin of the fibers forming the meltblown nonwoven fabric having a crystallinity of 0% to 14%.2. The nonwoven fabric sheet according to claim 1 , wherein:{'sup': '2', 'the spunbonded nonwoven fabric has a basis weight of 8.0 to 25.0 g/mand a fiber diameter of 10 to 40 μm;'}{'sup': '2', 'the meltblown nonwoven fabric has a basis weight of 2.0 to 10.0 g/m; and'}{'sup': '3', 'the nonwoven fabric sheet has a bulk density of 0.15 to 0.40 g/cm.'}3. An extraction filter formed by employing the nonwoven ...

FLAME-RESISTANT NONWOVEN FABRIC

A nonwoven fabric and a method of making thereof. The nonwoven fabric includes a plurality of randomly-oriented fibers, the plurality of randomly-oriented fibers including: at least 60 wt % of oxidized polyacrylonitrile fibers; and from to less than 40 wt % of reinforcing fibers having an outer surface comprised of a (co)polymer with a melting temperature of from 100° C. to 450° C.; and a fluoropolymer binder on the plurality of randomly-oriented fibers; wherein the plurality of randomly-oriented fibers is bonded together to form the nonwoven fabric, optionally wherein the nonwoven fabric has a thickness of one millimeter or less. 1. A nonwoven fabric comprising at least 60 wt % of oxidized polyacrylonitrile fibers; and', 'from 0 to less than 40 wt % of reinforcing fibers having an outer surface comprised of a (co)polymer with a melting temperature of from 100° C. to 450° C.; and, 'a plurality of randomly-oriented fibers, the plurality of randomly-oriented fibers comprisinga fluoropolymer binder on the plurality of randomly-oriented fibers;wherein the plurality of randomly-oriented fibers is bonded together to form the nonwoven fabric, optionally wherein the nonwoven fabric has a thickness of one millimeter or less.2. The nonwoven fabric of claim 1 , wherein the reinforcing fibers comprise at least one of monocomponent or multi-component fibers.3. The nonwoven fabric of claim 2 , wherein the reinforcing fibers comprise polyethylene terephthalate claim 2 , polyphenylene sulfide claim 2 , poly-aramide claim 2 , or polylactic acid.4. The nonwoven fabric of claim 2 , wherein the reinforcing fibers are multicomponent fibers having an outer sheath comprising polyolefin.5. The nonwoven fabric of claim 2 , wherein the polyolefin is selected from the group consisting of polyethylene claim 2 , polypropylene claim 2 , polybutylene claim 2 , polyisobutylene claim 2 , polyethylene naphthalate claim 2 , and combinations thereof.6. The nonwoven fabric of claim 1 , wherein the ...

NONWOVEN MATERIAL FOR CLEANING AND SANITIZING SURFACES

Nonwoven materials having at least one layer are provided, as well as their use in cleaning articles. More particularly, the nonwoven materials can include a rough outer surface useful for scrubbing purposes. Alternatively or additionally, the nonwoven materials can include a carrier composition including a binder and a blocking agent. The carrier composition can repel a sanitizing agent, such as a quaternary ammonium compound, from the surface of the nonwoven material. 1. A nonwoven material , comprising:a first outer layer comprising synthetic fibers;a second outer layer comprising cellulose fibers and/or synthetic fibers; and a carrier composition comprising a binder and a blocking agent, wherein the binder is present in the nonwoven material in an amount of from about 2 wt-% to about 30 wt-% and the blocking agent is present in the nonwoven material in an amount of from about 0.1 wt-% to about 10 wt-%,wherein the first outer layer has a static coefficient of friction ranging from about 0.01 to about 3.0 and a kinetic coefficient of friction ranging from about 0.0001 to about 2.0.2. The multi-layer nonwoven material of claim 1 , wherein the nonwoven material comprises:from about 10 wt-% to about 90 wt-% of cellulose fibers; andfrom about 10 wt-% to about 90 wt-% of synthetic fibers.3. The multi-layer nonwoven material of claim 1 , wherein the synthetic fibers are bicomponent fibers.4. The multi-layer nonwoven material of claim 1 , wherein the first layer further comprises cellulose fibers and the second layer comprises both cellulose fibers and synthetic fibers.5. The multi-layer nonwoven material of claim 1 , wherein the blocking agent is an alkali metal salt.6. (canceled)7. (canceled)8. The multi-layer nonwoven material of claim 1 , wherein the blocking agent is a non-ionic surfactant.9. The multi-layer nonwoven material of claim 8 , wherein the nonionic surfactant is an alcohol ethoxylate compound or a polysorbate compound.10. (canceled)11. (canceled)12. The ...

PROSTHETIC DEVICE INCLUDING ELECTROSTATICALLY SPUN FIBROUS LAYER AND METHOD FOR MAKING THE SAME

In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated. 128-. (canceled)29. A deposited fiber mat comprising a portion of a medical device , the fiber mat comprising:deposited fibers having diameters of 10 nm to 2000 nm.30. The deposited fiber mat of claim 29 , wherein the fiber mat comprises pores with diameters from about 0.05 to about 50 μm.31. A method of manufacturing a polymeric material comprising: obtaining a sheet comprising a mat of polymeric fibers; sintering the sheet; and expanding the sheet in a first direction after the fibers are deposited.32. The method of claim 31 , wherein obtaining the sheet comprises: mixing a PTFE-water dispersion comprising from 10% to 85% PTFE solids by weight with PEO to create a mixture having about 1 to 10 wt % PEO/mL of total mixture or more; spinning the mixture; collecting spun fibers on a rotating tube assembly; and wherein the sintering is at a temperature of 35° C. to 485° C. The present application is a continuation of U.S. application Ser. No. 14/331,422, filed Jul. 14, 2014; which application is a continuation of U.S. application Ser. No. 13/564,927, filed on Aug. 2, 2012, now U.S. Pat. No. 9,034,031, issued May 19, 2015; which application is a continuation application of U.S. application Ser. No. 12/852,993, filed on Aug. 9, 2010; now U.S. Pat. No. 8,262,979, issued Sep. 11, 2012; which is based on and claims priority to U.S. Provisional Application 61/232,252, filed Aug. 7, 2009, and all of the foregoing are incorporated herein in their entirety by this reference.The successful use of ...

FIBERS AND ARTICLES INCLUDING THEM

A multi-component fiber including at least first and second components. In some cases, at least a portion of the first component is opaque and microporous, and the second component is different from the first component. In some cases, at least a portion of the second component can be seen through at least a portion of the first component. A fiber having an opaque, microporous region and a see-through region of lower porosity is also disclosed. Fibrous webs including such fibers are also disclosed. In some cases, the fibrous web has at least one first region where first portions of the multiple fibers are opaque and microporous and at least one second region where second portions of the multiple fibers form a see-through region of lower porosity. Articles and laminates including the fibrous webs are disclosed. Methods of making the fibers, fibrous webs, and articles are also disclosed. 1. A multi-component fiber comprising at least first and second components , wherein at least a portion of the first component is opaque and microporous , and wherein the second component is different from the first component.2. The multi-component fiber of claim 1 , wherein the first component further comprises a see-through region of lower porosity than the portion that is opaque and microporous.3. The multi-component fiber of claim 2 , wherein at least a portion of the second component can be seen through the see-through region of lower porosity.4. The multi-component fiber of claim 1 , wherein the multi-component fiber is a core-sheath fiber claim 1 , wherein the sheath comprises the first component claim 1 , and wherein the core comprises the second component.5. The multi-component fiber of claim 1 , wherein the first component and second component are different colors or different shades of the same color.6. A fiber comprising an opaque claim 1 , microporous region and a see-through region of lower porosity.7. The fiber of claim 6 , wherein the fiber comprises a beta-nucleating ...

ELECTROSPINNING OF PTFE WITH HIGH VISCOSITY MATERIALS

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat. 1. A polymeric material comprising: a membrane comprised of deposited polymeric fibers , the polymeric fibers having been expanded in a first direction after the fibers are deposited.2. The polymeric material of claim 1 , wherein the deposited fibers comprise sintered fibers.3. The polymeric material of claim 1 , wherein the deposited fibers are exposed to an elevated temperature.4. The polymeric material of claim 1 , wherein the deposited fibers are generally aligned in the first direction.5. The polymeric material of claim 1 , wherein the membrane is more resistant to creep in the first direction after the membrane is expanded.6. The polymeric material of claim 1 , wherein the deposited polymeric fibers have been expanded in a second direction.7. The polymeric material of claim 1 , wherein the deposited polymeric fibers comprise serially deposited polymeric fibers.8. A deposited fiber mat comprising a portion of a device claim 1 , the deposited fiber mat comprising deposited fibers claim 1 , wherein all of the fibers have diameters of 400 nm to 3200 nm.9. The deposited fiber mat of claim 8 , wherein the deposited fiber mat comprises spun polytetrafluoroethylene fibers.10. The deposited fiber mat of claim 8 , wherein all of the fibers have diameters from 800 nm to 2.4 μm.11. The ...

Cleaning Sheet

A cleaning sheet that is capable of reliably capturing dust without damaging a cleaning target surface regardless of size and the like of dust falling on the cleaning target surface is described. The cleaning sheet for cleaning a cleaning target object includes a base material sheet, a first brush portion that is provided to the base material sheet and is formed of a fiber material, and a second brush portion that is provided to the base material sheet and is formed of crushed pulp materials that are layered.

Self-Crimped Ribbon Fiber and Nonwovens Manufactured Therefrom

Multi-component fibers or filaments that are ribbon shaped are provided having polymer components positioned in a side-by-side fashion. For example, the multi-component fibers may be bicomponent fibers having ribbon shape. The polymer components of the fibers are selected to have differential shrinkage behavior. Nonwovens are also provided that are manufactured from such ribbon shaped multi-component fibers or filaments. 120-. (canceled)21. A method of preparing a crimped fiber , comprising:(i) forming a continuous bicomponent fiber including a first polymer component and a second polymer component in a side-by-side configuration; wherein the continuous bicomponent fiber has a ribbon-shaped cross-section; and(ii) activating the continuous bicomponent fiber to initiate self-crimping of the continuous bicomponent fiber and to form the crimped fiber.22. The method of claim 21 , wherein activating the continuous bicomponent fiber comprises subjecting the continuous bicomponent fiber to thermal energy claim 21 , a mechanical force claim 21 , or both.23. The method of claim 22 , wherein the mechanical force comprises stretching the continuous bicomponent fiber.24. The method of claim 21 , further comprising depositing the crimped fiber directly or indirectly onto a collection web.25. The method of claim 21 , wherein the first component has a first melting point and the second component has a second melting point claim 21 , wherein a melting point difference between the first melting point and the second melting point is at most about 15° C.26. The method of claim 21 , wherein the first component has a first melting point between about 110° C.-130° C. claim 21 , and the second component has a second melting point between about 135° C.-175° C.27. The method of claim 21 , wherein the first component has a shrinkage coefficient and the second component has a second shrinkage coefficient claim 21 , wherein the first shrinkage coefficient is different than the second shrinkage ...

Self-Crimped Ribbon Fiber and Nonwovens Manufactured Therefrom

Multi-component fibers or filaments that are ribbon shaped are provided having polymer components positioned in a side-by-side fashion. For example, the multi-component fibers may be bicomponent fibers having ribbon shape. The polymer components of the fibers are selected to have differential shrinkage behavior. Nonwovens are also provided that are manufactured from such ribbon shaped multi-component fibers or filaments. 1. A bicomponent fiber substantially having a ribbon shape comprising:a first polymer component, anda second polymer component,wherein a self-crimped bicomponent fiber is produced upon subjecting the bicomponent fiber to at least one of a thermal energy and a mechanical force.2. The bicomponent fiber according to claim 1 , wherein the first polymer component and the second polymer component having an interface that is substantially parallel to a major bisector defining the ribbon shape of the bicomponent fiber.3. The bicomponent fiber according to claim 1 , wherein the first polymer component and the second polymer component having an interface that is substantially perpendicular to a major bisector defining the ribbon shape of the bicomponent fiber.4. The bicomponent fiber according to claim 1 , wherein the mechanical force comprises stretching the bicomponent fiber.5. The bicomponent fiber according to claim 1 , wherein an aspect ratio of the bicomponent fiber is greater than about 4:1.6. The bicomponent fiber according to claim 1 , wherein a melting point difference between the first polymer component and the second polymer component is at most about 15° C.7. A method of preparing a ribbon shaped bicomponent fiber comprising:providing a first polymer component,providing a second polymer component,spinning and processing the first polymer component and the second polymer component to form the bicomponent fiber having a side-by-side cross-section, andself-crimping the bicomponent fiber to form a self-crimped bicomponent fiber.8. The method ...

MELT-BLOWN NONWOVEN FABRIC, AND PRODUCTION PROCESS AND APPARATUS FOR THE SAME

It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 μm, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same. 1. A melt-blown nonwoven fabric comprising polyolefin fibers and having:(i) a mean fiber diameter of not more than 2.0 μm,(ii) a fiber diameter distribution CV value of not more than 60%, and(iii) 15 or less fusion-bonded fibers based on 100 fibers.2. A melt-blown nonwoven fabric comprising propylene-based polymer fibers and having:(i) a mean fiber diameter of not more than 2.0 μm,(ii) a fiber diameter distribution CV value of not more than 60%, and(iv) an α crystal fraction of less than 0.9.3. A filter containing a layer composed of the melt-blown nonwoven fabric as claimed in and having a 0.5 mm diameter fine particle collection efficiency of not less than 90% in the case of a basis weight of 90 g/cm.4. A nonwoven fabric laminate structure having the melt-blown nonwoven fabric as claimed in on at least one surface of which a spun bonded nonwoven fabric is laminated claim 1 , wherein a ratio of a basis weight (g/m) of the melt-blown nonwoven fabric layer to a basis weight (g/m) of the whole laminate is not more than 0.05.5. Sanitary goods comprising the nonwoven fabric laminate ...

NONWOVEN FABRIC AND PRODUCT OBTAINED USING SAME

A nonwoven fabric that is excellent in permeability and absorbency of a highly viscous liquid, and can further reduce wetback of the liquid and has flexible drape, and a product obtained using the same. The nonwoven fabric is obtained using thermobondable fibers, in which non-thermobonded regions where no thermobonding is performed at intersections of the fibers, and thermobonded regions where thermobonding is performed at the intersections of the fibers alternately exist on a surface of the nonwoven fabric, and the non-thermobonded regions exist in a dispersed manner in a dot form, or continuously or intermittently exist in a linear form, and thermobonding is performed at the intersections thereof without causing compression flattening in the fibers in the thermobonded regions. 1. A nonwoven fabric , obtained using thermobondable fibers , in which non-thermobonded regions where no thermobonding is performed at intersections of the fibers , and thermobonded regions where thermobonding is performed at the intersections of the fibers alternately exist on a surface of the nonwoven fabric , wherein the non-thermobonded regions exist in a dispersed manner in a dot form , or continuously or intermittently exist in a linear form , and thermobonding is performed at the intersections of the fibers without causing compression flattening in the fibers in the thermobonded regions.2. The nonwoven fabric according to claim 1 , wherein a thickness of the non-thermobonded region is smaller than a thickness of the thermobonded region in a thickness direction of the nonwoven fabric.3. A product claim 1 , obtained using the nonwoven fabric according to .4. A product claim 2 , obtained using the nonwoven fabric according to . The invention relates to a nonwoven fabric that can be preferably used for a surface material of a hygienic material or the like, and a product obtained using the same.In general, a nonwoven fabric prepared by performing thermobonding of a web formed of ...

UNITARY NONWOVEN MATERIAL

Nonwoven materials having at least one layer comprising cellulose fibers are provided. The nonwoven materials comprise bonded natural cellulosic fibers having high capillary action. The nonwoven materials are suitable for use in a variety of applications, including absorbent products and pre-moistened cleaning materials with metered release of liquid. 1. A unitary airlaid nonwoven material comprising at least one layer of fibers , wherein the at least one layer comprises cellulose fibers and synthetic fibers , and wherein the cellulose fibers comprise bonded natural cellulosic fibers having a coarseness less than about 15 mg/100 m.2. The unitary airlaid nonwoven material of claim 1 , wherein the bonded natural cellulosic fibers have a coarseness in a range of from about 4.2 mg/100 m to about 8.8 mg/100 m.3. The unitary airlaid nonwoven material of claim 2 , wherein the bonded natural cellulosic fibers have a coarseness of about 6.5 mg/100 m.4. The unitary airlaid nonwoven material of claim 1 , wherein the bonded natural cellulosic fibers have a Kajaani weighted average length of about 1.5 mm or less.5. The unitary airlaid nonwoven material of claim 1 , wherein the bonded natural cellulosic fibers include hardwood fibers.6eucalyptus. The unitary airlaid nonwoven material of claim 5 , wherein the bonded natural cellulosic fibers comprise pulp.7. The unitary airlaid nonwoven material of claim 1 , wherein the synthetic fibers comprise bicomponent binder fibers.8. The unitary airlaid nonwoven material of claim 7 , wherein the bicomponent binder fibers comprise eccentric bicomponent fibers claim 7 , and wherein the bicomponent binder fibers comprise a polyethylene-based sheath and a core comprising a polymer having a melting point above about 200° C.9. The unitary airlaid nonwoven material of claim 1 , wherein the unitary airlaid nonwoven material comprises at least two layers of fibers.10. The unitary airlaid nonwoven material of claim 9 , further comprising a layer of ...

COMPOSITE MATERIALS AND METHODS FOR MAKING THE SAME

Disclosed herein are composite materials comprising a fibrous material and from 1% to 50% of a binding material, by weight of the composite material. Also disclosed herein are methods for making and using the same. 1. A composite material comprising:from 1% to 99% by weight of a fibrous material comprising cellulosic fibers, by weight of the composite material; andfrom 1% to 50% by weight of a binding material, by weight of the composite material,{'sup': 3', '3, 'wherein the composite material has a density of 0.8 g/cmto 1.5 g/cm.'}2. The composite material of claim 1 , wherein the binding material comprises a bicomponent fiber claim 1 , a monocomponent fiber claim 1 , or a combination thereof.3. The composite material of claim 1 , wherein the bicomponent fiber has (i) a core comprising polyethylene claim 1 , polyethylene terephthalate claim 1 , polyester claim 1 , polypropylene claim 1 , polyvinyl chloride claim 1 , polystyrene claim 1 , polymethacrylate claim 1 , polyethylene naphthalate claim 1 , polyvinyl alcohol claim 1 , polyurethane claim 1 , polyacrylonitrile claim 1 , polylactic acid (PLA) claim 1 , polyhydroxyalkanoates (PHA) or combinations thereof claim 1 , and (ii) a sheath comprising polyethylene claim 1 , polyethylene terephthalate claim 1 , polyester claim 1 , polypropylene claim 1 , polyvinyl chloride claim 1 , polystyrene claim 1 , polymethacrylate claim 1 , polyethylene naphthalate claim 1 , polyvinyl alcohol claim 1 , polyurethane claim 1 , polyacrylonitrile claim 1 , polylactic acid (PLA) claim 1 , polyhydroxyalkanoates (PHA) or combinations thereof claim 1 , provided that the polymer in the sheath has a lower melting temperature than the polymer in the core.4. The composite material of claim 1 , wherein the density of the composite material is 1.1 g/cmto 1.4 g/cm.5. The composite material of claim 1 , wherein the composite material has a tensile strength of 15 MPa or greater claim 1 , a flexural strength of 15 MPa or greater claim 1 , or both.6 ...

SCOURING ARTICLE AND METHODS OF MAKING AND USING

A scouring article including a monolithic nonwoven pad with a semi-densified fibrous layer that is integral to the monolithic nonwoven pad and that provides a major surface of the monolithic nonwoven pad, and methods of making and using. 1. A scouring article comprising: at least some nonwoven fibers that are bonded to each other by fiber-fiber melt-bonding;', 'and,', wherein the monolithic nonwoven pad comprises a first semi-densified fibrous layer that is integral with the monolithic nonwoven pad and that comprises an outward major surface that provides the first major surface of the monolithic nonwoven pad;', 'and wherein the first major surface of the monolithic nonwoven pad comprises a first array of spaced-apart scouring bodies including particles of melamine-formaldehyde resin, at least selected scouring bodies of which first array each comprise an inward portion that penetrates at least partially into the first semi-densified fibrous layer of the monolithic nonwoven pad, and an outward portion that protrudes outward at least 0.2 mm beyond the first major surface of the monolithic nonwoven pad., 'at least some nonwoven fibers that are bonded to each other by a binder that is distributed throughout the monolithic nonwoven pad in the form of globules;'}], 'a monolithic nonwoven pad comprising an interior and a first major surface and a second major surface, the monolithic nonwoven pad comprising2. The scouring article of wherein the nonwoven fibers of the pad include first staple fibers that exhibit a first melting point and second staple fibers that include at least one component that exhibits a second melting point that is lower than the first melting point of the first staple fibers claim 1 , wherein at least selected second staple fibers are melt-bonded to first staple fibers at points of contact between the first and second staple fibers.3. The scouring article of wherein at least some of the nonwoven fibers of the pad are crimped staple fibers.4. The ...

Thermally fusible sheetlike structure and method for production thereof

A thermally fusible sheetlike structure, especially usable as fusible interlining in the textile industry, has a carrier ply made from a textile material to which has been applied a two-ply adhesive composition structure comprising an underlayer directly adjoining the sheetlike structure and an overlayer disposed upon the underlayer, wherein the underlayer contains a first hotmelt adhesive and the overlayer a second hotmelt adhesive, wherein the first hotmelt adhesive has a melting point of >140° C. and a melt flow index (MFI) value of >50 g/10 minutes (190° C./2.16 kg) and the second hotmelt adhesive a melting point of <145° C. and an MFI value of <50 (190° C./2.16 kg).

NONWOVEN FABRIC WEB

A nonwoven fabric web having an excellent sound absorption coefficient in a frequency range from 800 Hz to 1000 Hz when used as a sound absorbing member for a vehicle exterior. The nonwoven fabric web including a nonwoven fabric having meltblown fibers and binder fibers arranged so as to be confounded with the meltblown fibers and fused with the meltblown fibers at some of the confounding points at the very least, the weight per unit area of the nonwoven fabric being from 400 g/mto 1500 g/m, and the flexural rigidity of the nonwoven fabric being from 2.0 N/50 mm to 20.0 N/50 mm. 1. A nonwoven fabric web provided with a nonwoven fabric having:meltblown fibers; andbinder fibers arranged so as to be confounded with the meltblown fibers and fused with the meltblown fibers at some of the confounding points at the very least;{'sup': 2', '2, 'the weight per unit area of the nonwoven fabric being from 400 g/mto 1500 g/m, and the flexural rigidity of the nonwoven fabric being from 2.0 N/50 mm to 20.0 N/50 mm, as measured according to the three-point flexural test (method A) of JIS K7074 (1998).'}2. The nonwoven fabric web according to claim 1 , wherein the content of the binder fibers is from 30 parts by mass to 85 parts by mass per 100 parts by mass of a total amount of the meltblown fibers and the binder fibers.3. The nonwoven fabric web according to having a solidity of at least 15%.4. The nonwoven fabric web according to any claim 3 , wherein the nonwoven fabric is a laminate of a plurality of nonwoven fabrics provided with the meltblown fibers and the binder fibers.5. The nonwoven fabric web according to claim 4 , wherein the nonwoven fabric is a laminate of first and second nonwoven fabrics provided with the meltblown fibers and the binder fibers claim 4 , with the first nonwoven fabric having a weight per unit area of at least 400 g/mand less than 1500 g/m claim 4 , and the second nonwoven fabric having a weight per unit area of greater than 0 g/mand at most 400 g/m.6 ...

Laminated filler and preparation method thereof

The laminated filler provided by the present invention comprises: a first fiber batt ( 1 ) and a second fiber batt ( 2 ) compounded to the first fiber batt. In the present invention, by providing the fiber batts in layers, the resulted filler is allowed to have good bulkiness and warmness, and an independent and flexible delamination and diversified combination of different component fibers can be achieved. The results show that the laminated filler provided by the invention has a thickness of 1 to 10 cm and a do value ≧5.0.

REUSE OF USED WOVEN OR KNITTED TEXTILE

The invention pertains to a method of manufacturing a product from used woven or knitted textile comprising vegetable or animal fibres, in particular cotton or wool, the method comprising the steps of: collecting the used woven or knitted textile, granulating the used woven or knitted textile into fibres having an average fiber length of between 3.6 mm and 5.5 mm, mixing the granulated used woven or knitted textile with a thermoplastic fiber based binder, and forming a nonwoven mat from the mixture of the granulated used woven or knitted textile and fiber based binder, the nonwoven mat comprising 59% to 75% of vegetable fiber, or alternatively the nonwoven mat comprising at least 80% animal fibres. The invention also pertains to a product produced by said method. 143-. (canceled)44. A method of manufacturing a product from used woven or knitted textile comprising vegetable or animal fibres , including cotton or wool , the method comprising the steps of:collecting said used woven or knitted textile,granulating said used woven or knitted textile into fibres having an average fiber length of between 3.5 mm and 5.5 mm,mixing said granulated used woven or knitted textile with a thermoplastic fiber based binder, and wherein said nonwoven mat comprises 59% to 67% of vegetable fiber, or alternatively said nonwoven mat comprises at least 80% animal fibres, and', 'wherein said method further comprising the steps of:, 'forming a nonwoven mat from the mixture of said granulated used woven or knitted textile and fiber based binder,'}mixing said granulated used woven or knitted textile with a coupling agent, and{'b': '140', 'heating said nonwoven mat to at least ° C.'}45. The method according to claim 44 , said nonwoven mat comprising about 3% coupling agent.46. The method according to claim 44 , said coupling agent being Maleic Anhydride Polyethylene (MAPE).47. The method according to claim 44 , further comprising the steps of:placing said nonwoven mat in a preheated three- ...

NON-WEAVE FABRIC, SHEET OR FILM, MULTI-LAYERED SHEET, MOLDED ARTICLE AND METHOD FOR MANUFACTURING NON-WEAVE FABRIC

Provided is a non-weave fabric containing a thermoplastic resin fiber and a carbon fiber as major ingredients, capable of yielding a resin molded article when molded thereinto, which is excellent in mechanical strength and in appearance, and, a multi-layered sheet having the non-weave fabric and a textile layer, which is excellent in mechanical strength and less likely to warp. The non-weave fabric includes a thermoplastic resin fiber (A), a carbon fiber (B), and a thermoplastic resin (C) having a glass transition temperature lower than that of the thermoplastic resin fiber (A), the ratio of content of the thermoplastic resin (C) being 1 to 50% by weight of the total content of the thermoplastic resin fiber (A) and the thermoplastic resin (C). 1. A non-weave fabric comprising:a thermoplastic resin fiber (A);a carbon fiber (B); anda thermoplastic resin (C) having a glass transition temperature lower than a glass transition temperature of the thermoplastic resin fiber (A),which comprises the thermoplastic resin (C) in a content of 1 to 50% by weight, relative to a total content of the thermoplastic resin fiber (A) and the thermoplastic resin (C).2. The non-weave fabric of claim 1 , wherein the carbon fiber (B) has an average fiber length of 1 to 15 mm.3. The non-weave fabric of claim 1 , wherein the thermoplastic resin fiber (A) has an average fiber length of 1 to 15 mm.4. The non-weave fabric of claim 1 , wherein the thermoplastic resin (C) is in a form of a fiber.5. The non-weave fabric of claim 1 , wherein the thermoplastic resin (C) is in a form of a fiber having an average fiber length of 1 to 15 mm.6. The non-weave fabric of claim 1 , which has a difference between the average fiber length of the thermoplastic resin fiber (A) and the average fiber length of the carbon fiber (B) of 10 mm or smaller.7. The non-weave fabric of claim 1 , which has a ratio of mixing (ratio by weight) of the thermoplastic resin fiber (A) and the carbon fiber (B) of 99:1 to 25:75.8. ...

NONWOVEN SHEET, PROCESS FOR PRODUCING THE SAME, AND FILTER

A nonwoven sheet contains a substrate layer formed from a fiber aggregate nonwoven structural member; the fiber aggregate nonwoven structural member containing a thermal adhesive fiber; the thermal adhesive fibers are melt-bonded to fix the fibers of the member. The average thickness of the substrate layer is adjusted to not less than 0.2 mm to less than 1 mm, and the thermal adhesive fibers are substantially uniformly melt-bonded in a surface direction of the substrate layer. The sheet may have a surface layer over at least one side of the substrate layer, the surface layer may contain a fiber aggregate nonwoven structural member having an apparent density higher than the apparent density of the substrate layer. The surface layer may comprise a layer formed by heat-pressing or may be formed from a meltblown nonwoven fabric. The thermal adhesive fiber may be substantially uniformly melt-bonded in a thickness direction of the substrate layer. The thermal adhesive fiber may contain an ethylene-vinyl alcohol-series copolymer; the copolymer may form a continuous area of a surface of the fiber. The sheet has an improved flexural rigidity, less deformation under a load, and an excellent formability, in spite of a small thickness thereof. 1. A nonwoven sheet , comprising a substrate layer comprising a fiber aggregate nonwoven structural member , the fiber aggregate nonwoven structural member comprising a thermal adhesive fiber , the thermal adhesive fibers being melt-bonded to fix the fibers of the fiber aggregate nonwoven structural member ,{'sup': '3', 'wherein the substrate layer has an average thickness of not less than 0.2 mm to less than 1 mm and an apparent density of 30 to 170 kg/m, and the thermal adhesive fibers are substantially uniformly melt-bonded in a surface direction of the substrate layer.'}2. The nonwoven sheet according to claim 1 , which further comprises a surface layer over a side of the substrate layer claim 1 , wherein the surface layer comprises a ...

FLUOROPOLYMER FIBER-BONDING AGENT AND ARTICLES PRODUCED THEREWITH

The invention relates to a melt-processable fiber-bonding agent made of poly(vinylidene fluoride) (PVDF), such as KYNAR® PVDF from Arkema, as well as to fibrous materials bonded with the PVDF fiber-bonding agent. The PVDF fiber-bonding agent is a low-melt temperature, low melt viscosity PVDF polymer or copolymer with excellent chemical and oxidative resistance properties, and is suitable for bonding fibers in non-woven fabrics, especially for use in chemically-aggressive environments. The PVDF fiber-bonding agent composition allows it to be processed into fibers on conventional melt spinning equipment. The PVDF fiber-bonding agent is introduced into non-woven fabric in the form of a continuous fiber web or as a component of a mixed fiber formulation. When heated above its melting point, the lower melting point PVDF fiber-bonding agent of the invention bonds the fibers of the fiber framework at the fiber cross-over points. 1. A fibrous composite material comprising primary fibers and a fiber-bonding agent composition , wherein said fiber-bonding agent composition comprises a melt-processed fluoropolymer , said fluoropolymer being a homopolymer or a copolymer comprising at least 60 weight percent of vinylidene fluoride monomer units , wherein said fluoropolymer composition has a melt viscosity of from 10 to 5 ,000 poise as measured at 100 sand 230° C. by capillary rheology , and wherein said fluoropolymer has a second heat melting point of from 110° C. to 180° C. as measured by DSC , and wherein said fiber-bonding agent composition has a melting point of at least 10° C. below the melting point of the primary fibers.2. The fibrous composite material of claim 1 , wherein said fluoropolymer fiber-bonding agent is a copolymer comprising 65 weight percent or more of vinylidene fluoride monomer units claim 1 , and from 10 to 35 weight percent of hexafluoropropene monomer units.3. The fibrous composite material of claim 1 , wherein said fiber-bonding agent composition has a ...

SCOURING ARTICLE AND METHODS OF MAKING AND USING

A scouring article including a monolithic nonwoven pad with a semi-densified fibrous layer that is integral to the monolithic nonwoven pad and that provides a major surface of the monolithic nonwoven pad, and methods of making and using. 1. A scouring article comprising: at least some nonwoven fibers that are bonded to each other by fiber-fiber melt-bonding;', 'and,', wherein the monolithic nonwoven pad comprises a first semi-densified fibrous layer that is integral with the monolithic nonwoven pad and that comprises an outward major surface that provides the first major surface of the monolithic nonwoven pad;', 'and wherein the first major surface of the monolithic nonwoven pad comprises a first array of spaced-apart scouring bodies, at least selected scouring bodies of which first array each comprise an inward portion that penetrates at least partially into the first semi-densified fibrous layer of the monolithic nonwoven pad, and an outward portion that protrudes outward beyond the first major surface of the monolithic nonwoven pad., 'at least some nonwoven fibers that are bonded to each other by a binder that is distributed throughout the monolithic nonwoven pad in the form of globules;'}], 'a monolithic nonwoven pad comprising an interior and a first major surface and a second major surface, the monolithic nonwoven pad comprising2. The scouring article of wherein the nonwoven fibers of the pad include first staple fibers that exhibit a first melting point and second staple fibers that include at least one component that exhibits a second melting point that is lower than the first melting point of the first staple fibers claim 1 , wherein at least selected second staple fibers are melt-bonded to first staple fibers at points of contact between the first and second staple fibers.3. The scouring article of wherein at least some of the nonwoven fibers of the pad are crimped staple fibers.4. The scouring article of wherein at least some of the first staple fibers ...

Self-bonded cellulosic nonwoven web and method for making

A self-bonded nonwoven web, at least some cellulosic fibers that are self-bonded to each other at points of intersection of the cellulosic fibers with each other; and, an ionic liquid. Methods of making such a web are also disclosed, wherein the method comprises: contacting at least some of the first, cellulosic fibers with an ionic liquid; exposing the ionic liquid and the first, cellulosic fibers to a first temperature; and exposing the ionic liquid and the first, cellulosic fibers to a second temperature that is lower than the first temperature.

Webs of Bi-component and Mono-component Co-PLA Fibers

Web material for production of tea bags and the like made of a nonwoven network of PLA fibers in mono-component. 1. An infusion package having a non-woven web , said non-woven web consisting: a mono-component Polylactic Acid (PLA) fiber and derivatives for providing biodegradability after usage and recyclability of waste materials during each step of the manufacturing process from polymer to finished web.2. The infusion package as in usable as material for bags or pouches for: lemonade claim 1 , herbal sachets claim 1 , coffee claim 1 , tea claim 1 , hot chocolate claim 1 , soap powder claim 1 , chemicals and chlorine for pools and spas claim 1 , decontaminating liquids claim 1 , coloring of liquids claim 1 , dehumidifying chemicals claim 1 , carriers for phase-change materials for heating or cooling claim 1 , tobacco pouches claim 1 , and all materials that can be placed in a heat and/or ultra sound activated sealable container.3. The infusion package as in further including a string attached to the package claim 1 , said string also made of a mono-component Polylactic Acid (PLA) fiber and derivatives.4. The infusion package of claim 3 , wherein the package is a beverage infusion package.5. The infusion package of claim 3 , wherein the package is a chemical release package.6. The infusion package of claim 3 , wherein the package is an odor release package.7. The infusion package as in wherein the crystallinity of the PLA fiber is controlled by drawing the fiber.8. The infusion package as in further including a dry basis weight from between about 8 to 85 grams per square meter.9. The infusion package of claim 8 , wherein the package is a beverage infusion package.10. The infusion package of claim 8 , wherein smaller particle size contents may be utilized as compared to particle size of contents in paper infusion packages.11. The beverage infusion package as in wherein the pore size of the web if infused with hot liquids to enhance flow. The present invention relates ...

Filter material for air filter

An object of the present invention is to provide an air filter medium which includes heat-expandable particles that, even when contained in a small amount, impart excellent flame retardancy to the air filter medium and which has excellent flame retardancy and a low pressure loss. The present invention provides an air filter medium including: a plurality of stacked fibrous sheets; and heat-expandable particles and a binder disposed in at least one of interlaminar spaces between adjacent layers of the fibrous sheets.

Method for making a thermoinsulating padding, particularly for the clothing and furnishing fields

A method for making a thermoinsulating padding, particularly for the cloth article and furniture fields, comprises the steps of: providing a lap by carding in bulk fibers comprising at least a thermobinding fiber; applying, by spraying or spreading, a low glass transition temperature resin, or a mixture of resins comprising at least a low glass transition temperature resin at least on a side of said lap only to the surface layers of said side; drying the resin coated lap in a drying oven to start a cross linking of said resins; actuating said low glass transition temperature resin (previously applied either individually or in a mixture with other resins) by pressure calendering under a controlled temperature, thereby providing a dynamically operating padding.

Electrical Insulation Paper, Methods of Manufacture, and Articles Manufactured Therefrom

Fibrous substrates containing polyetherimides and other synthetic fibers are disclosed, along with methods of preparing electrical insulation paper and articles comprising the fibrous substrates.

NONWOVEN FABRIC

A nonwoven fabric , comprising a movable layer having front and back surfaces SA and SB, wherein the movable layer has a movable zone, in which one surface of the front and back surfaces is movable by 5 mm or more in a direction along the one surface, relative to the other surface. 1. A nonwoven fabric , comprising a movable layer having front and back surfaces of the nonwoven fabric ,wherein the movable layer has a movable zone, in which one surface of the front and back surfaces is movable by 5 mm or more in a direction along the one surface, relative to the other surface.2. The nonwoven fabric according to claim 1 , wherein a moving range of the movable layer in a direction along the surface is 5 mm or more and 10 mm or less claim 1 , preferably 6 mm or more claim 1 , and more preferably 7 mm or more; and preferably 9 mm or less claim 1 , and more preferably 8 mm or less.3. The nonwoven fabric according to claim 1 , wherein the number of fused points between the constituent fibers in the movable layer is lower in a region on an internal side of the movable layer than in the regions on the front surface side or the back surface side of the movable layer.4. The nonwoven fabric according to claim 1 , comprising a convex portion projecting from a reference surface of the nonwoven fabric in thickness direction claim 1 ,wherein an external angle of a wall portion of the convex portion relative the reference surface is 110° or less.5. The nonwoven fabric according to claim 4 ,{'b': 1', '2, 'wherein the external angle of the wall portion forming the convex portion has external angles θ and θ,'}{'b': 1', '2, 'wherein the external angle θ is the angle between the reference surface and a straight line passing through an upper end portion and a lower end portion of the wall portion in a vertical cross section in the center of the concave portion of the concavo-convex portion along one direction of the nonwoven fabric, and the external angle θ is the angle between the ...

ELECTROSPINNING OF PTFE WITH HIGH VISCOSITY MATERIALS

An improved process for forming a PTFE mat is described. The process includes providing a dispersion with PTFE, a fiberizing polymer and a solvent wherein said dispersion has a viscosity of at least 50,000 cP. An apparatus is provided which comprises a charge source and a target a distance from the charge source. A voltage source is provided which creates a first charge at the charge source and an opposing charge at the target. The dispersion is electrostatically charged by contact with the charge source. The electrostatically charged dispersion is collected on the target to form a mat precursor which is heated to remove the solvent and the fiberizing polymer thereby forming the PTFE mat. 1. A polymeric material comprising: a membrane comprised of serially deposited polymeric fibers , the polymeric fibers having been stretched in a first direction after the fibers are serially deposited.2. The polymeric material of claim 1 , wherein the serially deposited fibers comprise sintered fibers.3. The polymeric material of claim 1 , wherein the serially deposited fibers are exposed to an elevated temperature.4. The polymeric material of claim 1 , wherein the serially deposited fibers are generally aligned in the first direction.5. The polymeric material of claim 1 , wherein the membrane is more resistant to creep in the first direction after the membrane is stretched.6. The polymeric material of claim 1 , wherein the serially deposited polymeric fibers have been stretched in a second direction.7. A serially deposited fiber mat comprising a portion of a device claim 1 , the serially deposited fiber mat comprising serially deposited fibers claim 1 , wherein all of the fibers have diameters of 400 nm to 3200 nm.8. The serially deposited fiber mat of claim 7 , wherein the serially deposited fiber mat comprises spun polytetrafluoroethylene fibers.9. The serially deposited fiber mat of claim 7 , wherein all of the fibers have diameters from 800 nm to 2.4 μm.10. The serially ...

HEAT-RESISTANT FIBER STRUCTURE

A heat resistant fiber assembly contains heat resistant fibers having a glass transition temperature of 100° C. or more, the heat resistant fibers being bonded together. 1. A heat resistant fiber assembly , containingheat resistant fibers, which have a glass transition temperature of 100° C. or more and are bonded together.2. The heat resistant fiber assembly of claim 1 , wherein the heat resistant fibers have a fiber bonding ratio of 10% to 85%.3. The heat resistant fiber assembly of claim 2 , whereinthe heat resistant fiber assembly has a cross section along a thickness direction thereof divided into three equal regions anda middle region of the three regions has the fiber bonding 10% to 85%.4. The heat resistant fiber assembly of claim 2 , whereinthe fiber bonding ratio has a uniformity of 20% or less.5. The heat resistant fiber assembly of claim 1 , having an apparent density of 0.03 g/cmto 0.7 g/cm. The present invention relates to a heat-resistant fiber assembly comprised of heat resistant fibers and used as a thermal insulator or an acoustic absorber, and a method for producing the same.Fiber materials using heat resistant fibers have been used as a thermal insulator or an acoustic absorber in various fields such as vehicles, aircrafts, and building constructions.The fiber materials used for such applications, such as fiber structure bodies, are required to be low in density in view of lightness in weight, and to have tenacity such as flexural stress and tensile strength, in particular tenacity under a high temperature condition. The tenacity at high temperature has been longed for in the fields of, for example, acoustic thermal insulators to be built in a wall surface of an aircraft, filters to be built in an engine compartment of an automobile.It has also been proposed an acoustic thermal insulator made of a matted cotton-like material prepared by blending cotton and a binder More specifically, for example, Patent Document 1 discloses an acoustic thermal ...

SOUND-ABSORBING AIR DUCT FOR VEHICLE CONTAINING POLYESTER FIBER WITH LOW MELTING POINT

A sound-absorbing air duct for a vehicle includes a lower non-woven fabric and an upper non-woven fabric sandwiching wires therebetween; and a film made of a polyester resin having a low melting point and disposed on the upper non-woven fabric, wherein each of the lower and upper non-woven fabrics includes a mixture between a first polyester fiber containing a polyester resin having a melting point higher than 250° C. and a second polyester fiber containing a polyester resin having a low melting point and having a softening point of 100° C. to 150° C., wherein the second polyester fiber includes a polyester resin having a low melting point composed of: an acid component including terephthalic acid or an ester-forming derivative thereof; and a diol component including 2-methyl-1,3-propanediol, 2-methyl-1,3-pentanediol, and ethylene glycol. 1. A sound-absorbing air duct for a vehicle containing a polyester fiber having a low melting point , the duct comprising:a lower non-woven fabric and an upper non-woven fabric sandwiching wires therebetween; anda film made of a polyester resin having a low melting point and disposed on the upper non-woven fabric,wherein each of the lower and upper non-woven fabrics includes a mixture between a first polyester fiber containing a polyester resin having a melting point higher than 250° C. and a second polyester fiber containing a polyester resin having a low melting point and having a softening point of 100° C. to 150° C., an acid component including terephthalic acid or an ester-forming derivative thereof; and', 'a diol component including 2-methyl-1,3-propanediol, 2-methyl-1,3-pentanediol, and ethylene glycol., 'wherein the second polyester fiber includes a polyester resin having a low melting point composed of2. The sound-absorbing air duct of claim 1 , wherein the first polyester fiber and/or the second polyester fiber includes a fiber having a modified cross-section having a roundness of 50 to 80%.3. The sound-absorbing air duct ...

AN APPARATUS FOR FORMING OF CONSOLIDATION REGIONS IN A WEB

The present invention relates to an apparatus for thermally treating webs which comprise thermoplastic respectively meltable compounds, thereby creating cylindrical or elliptic consolidation regions which may optionally comprise an aperture by employing a thermal energy source, such as ultrasonic energy, as well as to webs comprising elliptic consolidation regions. In a particular aspect the invention concerns apparatus and methods for creating the consolidation regions by using an anvil with a contact member that is supported by support ribs in its outer or proximal portion. 1. An apparatus for for consolidating one or more region(s) of one or more web(s) , which comprise(s) thermoplastic material and which exhibit a length (x-) , width (y-) and thickness (z-) direction , by plastic deformation ,said apparatus exhibiting a x- or machine direction aligned with the direction of movement of said web(s) relative to said apparatus, a y- or cross-machine direction aligned with the width direction of the web(s), one or more energy source(s) for increasing the temperature at least of said region(s) of said web(s);', 'a first and a second anvil formning a gap and adapted to receive said web(s) therein such that the thickness or z-direction of said webs is aligned with the gap width;', 'a gap width adjustment means adapted to apply pressure to said web(s) in said gap, wherein', 'said first anvil is rotatably mounted around a cross-machine direction oriented first anvil axis, further exhibiting a radial r-orientation away from said first anvil axis;', i) a first anvil core having its axis aligned with said first anvil axis;', 'ii) at least one first anvil support rib, extending from said first anvil core r-directionally outwardly as well as preferably predominantly circumferentially,', 'iii) at least one contact member for contacting said webs in said gap wherein said contact member comprises', 'iv) a rounded non-spherical outward portion', extends into said gap and', 'being ...

Dimensionally stable nonwoven fibrous webs and methods of making and using the same

Dimensionally stable nonwoven fibrous webs include a multiplicity of continuous fibers formed from one or more thermoplastic polyesters and polypropylene in an amount greater than 0% and no more than 10% by weight of the web. The webs have at least one dimension which decreases by no greater than 10% in the plane of the web when heated to a temperature above a glass transition temperature of the fibers. When the thermoplastic polyester is selected to include aliphatic and aromatic polyesters, a spunbond process may be used to produce substantially continuous fibers that exhibit molecular orientation. When the thermoplastic polyester is selected from aliphatic polyesters, a meltblown process may be used to produce discontinuous fibers that do not exhibit molecular orientation. The webs may be used as articles for filtration, sound absorption, thermal insulation, surface cleaning, cellular growth support, drug delivery, personal hygiene, medical apparel, or wound dressing. 141-. (canceled)42. A nonwoven web including a plurality of continuous fine fibers comprising:one or more thermoplastic aliphatic polyesters; andpolypropylene in an amount greater than 0% and no more than 10% by weight of the web;wherein the fibers exhibit molecular orientation and extend substantially endlessly through the web, and have a median fiber diameter of no greater than 20 micrometers;further wherein the web has at least one dimension which decreases by no greater than 10% when the web is heated to a temperature above a glass transition temperature of the fibers;wherein the nonwoven web comprises at least one melt blown layer and at least one spunbond layer, at least one of which includes the fine fibers;wherein the meltblown layer has further incorporated therein or thereon a repellent additive.43. The nonwoven web of claim 42 , wherein the repellent additive comprises a surface treatment comprising paraffin waxes claim 42 , fatty acids claim 42 , bee's wax claim 42 , silicones claim 42 , ...

ARTICLES INCLUDING MULTI-COMPONENT FIBERS AND PARTICLES AND METHODS OF MAKING AND USING THE SAME

An article including multi-component fibers and particles is disclosed. The multi-component fibers include at least a first polymeric composition and a second polymeric composition, are adhered together, and are non-fusing at a temperature of at least 110° C. At least a portion of the external surfaces of the multi-component fibers includes the first polymeric composition. Particles are adhered or directly attached to the first polymeric composition on the external surfaces of at least some of the multi-component fibers along their lengths. The particles include at least one of activated carbon, superabsorbent polymer particles, and abrasive particles. In some embodiments, the particles are distributed throughout the thickness of a web of the multi-component fibers. A method of making the articles is also disclosed. 1. An article comprising:multi-component fibers having external surfaces and comprising at least a first polymeric composition and a second polymeric composition, wherein at least a portion of the external surfaces of the multi-component fibers comprises the first polymeric composition, and wherein the multi-component fibers are adhered together and are non-fusing at a temperature of at least 110° C.; andparticles adhered at least to the first polymeric composition on the external surfaces of at least some of the multi-component fibers along their lengths, wherein the particles comprise at least one of activated carbon or superabsorbent polymer particles.2. An article comprising:a web of multi-component fibers having external surfaces and comprising at least a first polymeric composition and second polymeric composition, wherein at least a portion of the external surfaces of the multi-component fibers comprises the first polymeric composition, and wherein the multi-component fibers are adhered together and are non-fusing at a temperature of at least 110° C.; andparticles directly attached to the first polymeric composition on the external surfaces of at ...

ARTICLE INCLUDING MULTI-COMPONENT FIBERS AND HOLLOW CERAMIC MICROSPHERES AND METHODS OF MAKING AND USING THE SAME

An article comprising hollow ceramic microspheres and multi-component fibers is disclosed. The multi-component fibers are adhered together, and the hollow ceramic microspheres are adhered to external surfaces of the multi-component fibers. A method of making the article and use of the article for insulation are also disclosed. 1. An article comprising:multi-component fibers having external surfaces and comprising at least a first polymeric composition and a second polymeric composition, wherein at least a portion of the external surfaces of the multi-component fibers comprises the first polymeric composition, and wherein the multi-component fibers are adhered together; andhollow ceramic microspheres adhered at least to the first polymeric composition on the external surfaces of at least some of the multi-component fibers.2. The article of claim 1 , wherein the article does not comprise a continuous polymer matrix.3. The article of claim 1 , wherein the hollow ceramic microspheres are directly attached to the first polymeric composition to the external surfaces of the multi-component fibers.4. The article of claim 1 , wherein the first polymeric composition has a softening temperature of up to 150° C. claim 1 , wherein the second polymeric composition has a melting point of at least 130° C. claim 1 , and wherein the difference between the softening temperature of the first polymeric composition and the melting point of the second polymeric composition is at least 10° C.5. The article of claim 1 , wherein the first polymeric composition has an elastic modulus of less than 3×10N/mat a temperature of at least 80° C. measured at a frequency of one hertz.6. The article of claim 1 , wherein the multi-component fibers are non-fusing at a temperature of at least 110° C.7. The article of claim 1 , wherein the hollow ceramic microspheres are present at a level of at least 95 percent by volume claim 1 , based on the total volume of the article.8. The article of claim 1 , ...

COMPOSITE PROSTHETIC DEVICES

The present disclosure provides composite prosthetic devices comprising two or more layers of electrospun polymers and methods of preparation thereof. In some embodiments, the two or more layers can be porous and in other embodiments, one or more components is nonporous. The composite prosthetic devices can comprise various materials and the properties of the prosthetic devices can be tailored for use in a range of different applications.

SPUNBONDED NON-WOVEN FABRIC, SANITARY MATERIAL, AND METHOD OF MANUFACTURING SPUNBONDED NON-WOVEN FABRIC

A spunbonded non-woven fabric includes a fiber including a propylene homopolymer having a melting point of 140° C. or more, a polyethylene having a density of from 0.941 g/cmto 0.970 g/cm, and at least one polymer selected from the group consisting of a polymer represented in (I) and a polymer represented in (II). In the spunbonded non-woven fabric, the fiber includes a sea-island structure, and the percentage of an island phase having a diameter of from 0.12 μm to less than 0.63 μm with respect to an island phase in a cross section orthogonal to the axis direction of the fiber on a number basis is 30% or more. (I) represents a random copolymer of propylene and at least one selected from ethylene or an α-olefin having a carbon number of from 4 to 20. (II) represents a propylene homopolymer with a melting point of less than 120° C. 1. A spunbonded non-woven fabric , comprising a fiber comprising: a propylene homopolymer having a melting point of 140° C. or more; a polyethylene having a density of from 0.941 g/cm3 to 0.970 g/cm3; and at least one polymer selected from the group consisting of a polymer specified in the following (I) and a polymer specified in the following (II) ,wherein the fiber comprises a sea-island structure, and a percentage of an island phase having a diameter of from 0.12 μm to less than 0.63 μm with respect to an entire island phase in a cross section orthogonal to an axis direction of the fiber on a number basis is 30% or more:(I) a random copolymer of propylene and at least one selected from ethylene or an α-olefin having a carbon number of from 4 to 20, and(II) a propylene homopolymer with a melting point of less than 120° C., satisfying the following (a) to (f):(a) [mmmm]=from 20% by mol to 60% by mol,(b) [rrrr]/(1−[mmmm]) 0.1,(c) [rmrm]>2.5% by mol,{'sup': '2', '#text': '(d) [mm]×[rr]/[mr]≤2.0,'}(e) weight-average molecular weight (Mw)=from 10,000 to 200,000, and(f) molecular weight distribution (Mw/Mn)≤4,wherein, in (a) to (d), [mmmm] ...

NONWOVEN FABRIC

Provided is a nonwoven fabric which is formed from a resin composition and has improved antifouling properties, sound insulation properties, coefficient of friction, and texture. This nonwoven fabric is formed from a resin composition which contains (1) a thermoplastic resin and (2) a fluorine-containing copolymer, and wherein: the thermoplastic resin (1) is a polypropylene; and the fluorine-containing copolymer (2) is a copolymer which has (a) a repeating unit that is formed of a fluorine-containing monomer represented by formula CH═C(—X)—C(═O)—Y—Z—Rf and (b) a repeating unit that is formed of a non-fluorine monomer having a hydrocarbon group with 14 or more carbon atoms, and which has a weight average molecular weight of 2,500-20,000. 1. A nonwoven fabric comprising a resin composition comprising:(1) a thermoplastic resin, and(2) a fluorine-containing copolymer,wherein the thermoplastic resin (1) is polypropylene, andthe fluorine-containing copolymer (2) is a copolymer which comprises: {'br': None, 'sub': '2', 'CH═C(—X)—C(═O)—Y—Z—Rf'}, '(a) a repeating unit formed from a fluorine-containing monomer represented by the formulawherein X is a hydrogen atom, a monovalent organic group or a halogen atom,Y is —O— or —NH—,Z is a direct bond or an divalent organic group, andRf is a fluoroalkyl group having 4 to 6 carbon atoms, and 'which has a weight-average molecular weight of 2,500 to 20,000.', '(b) a repeating unit formed from a fluorine-free monomer containing a hydrocarbon group having at least 14 carbon atoms, and'}2. The nonwoven fabric according to claim 1 , wherein claim 1 , in the fluorine-containing monomer (a) claim 1 , X is a methyl group and Z is a linear alkylene group or branched alkylene group having 1-20 carbon atoms.3. The nonwoven fabric according to claim 1 , wherein the fluorine-free monomer (b) is a (meth)acrylate ester in which an acryloyloxy group is bonded to a monovalent non-cyclic hydrocarbon group or cyclic hydrocarbon group having 14-30 carbon ...

EXTENSIBLE NONWOVEN FABRIC

Extensible nonwoven fabrics having improved elongation, extensibility, abrasion resistance and toughness. In particular, embodiments of the invention are directed to extensible spunbond fabrics comprising a polymeric blend of a metallocene catalyzed polypropylene, polyethylene, and a third polymer component. 1. A calendering roll configured for thermally bonding fibers of a nonwoven fabric to each other to define a coherent web , the calendering roll comprising a pair of cooperating rolls in which one of the rolls comprises a plurality of 3-dimensional geometric cylindrical or rod shaped bonding patterns extending in a cross-direction of said roll , said bonding patterns having a length that is from about 1.5 to 10 times the width.2. The roll of claim 1 , wherein the cross-directional cylindrical or rod shaped bond patterns have an aspect ratio defined by a length of the bond pattern divided by the width of the bond pattern that is from about 2 to 10.3. The roll of claim 1 , wherein the aspect ratio of the bond patterns is from about 4 to 8.4. The roll of claim 1 , wherein the bond patterns cover from about 8 to 25% of the surface area of the calendering roll.5. The roll of claim 1 , wherein the bond patterns cover from about 8 to 20% of the surface area of the calendering roll.6. The roll of claim 1 , wherein the bond patterns cover from about 8 to 12% of the surface area of the calendering roll.7. A system for preparing a nonwoven fabric claim 1 , the system comprising:a first polymer source configured to provide a stream of molten or semi-molten resin;a first spin beam in fluid communication with the first polymer source, the spin beam configured to extrude and draw a plurality of continuous filaments;a collection surface disposed below an outlet of the spin beam onto which the continuous filaments are deposited to form a nonwoven fabric;a calender roll positioned downstream of the first spin beam, the calender roll comprising a pair of cooperating rolls in which ...

Process for producing needle-punched nonwoven fabric

To provide a process for producing a needle-punched nonwoven fabric with which, when finished by embossing, it is possible to obtain a hardly fluffing and distinct rugged pattern. [Solution] Sheath-core composite fibers are accumulated and a fibrous web is formed. The core component of the sheath-core composite fiber is formed from a copolymer of ethylene glycol and terephthalic acid. The sheath component is formed from a copolymer of ethylene glycol, adipic acid, terephthalic acid, isophthalic acid and diethylene glycol. The sheath-core composite fibers are three dimensionally interlaced with each other by needle-punching the web, to obtain the needle-punched nonwoven fabric. The needle-punched nonwoven fabric is passed through heated embossed roll to provide a rugged pattern on a surface. During the process, the sheath component are softening melted and melt bonded between the sheath-core composite fibers to obtain an embossed nonwoven fabric having a distinct rugged pattern.

NONWOVEN WEB MATERIAL HAVING BONDING FAVORABLE FOR MAKING DIRECTIONAL STRETCH LAMINATE, AND DIRECTIONAL STRETCH LAMINATE

A stretch laminate is disclosed. The stretch laminate may include a first layer; a second layer; and one or more elastic members disposed between the first layer and the second layer. The first layer may include a nonwoven web material bearing a pattern of thermal bonds, including a plurality of bonds each having a length and a width, the length being oriented perpendicularly to the stretch direction and being greater than the width, for a majority of the bonds. The elastic member(s) may be joined with the first layer and the second layer while pre-strained in the stretch direction; when the stretch laminate is in a relaxed condition, at least the first layer may include a plurality of gathers comprising elongate ridges and valleys oriented transversely to the stretch direction. A disposable absorbent pant having an elasticized belt structure including the stretch laminate, is also disclosed. 2. The stretch laminate of wherein claim 1 , for a majority of the bonds in the pattern claim 1 , the length is greater than the width.3. The stretch laminate of wherein a majority of the bonds in the pattern have an aspect ratio of length to width of at least 2.4. The stretch laminate of wherein the pattern of bonds has a stretch direction repeat interval RDSD measured along an identifiable first line SDL parallel with the stretch direction claim 1 , a trans-stretch direction repeat interval RDX measured along a second line XL perpendicular to the stretch direction claim 1 , individual ones of the bonds arranged along the second line XL and within the trans-stretch direction repeat interval RDX have lengths claim 1 , individual ones of the bonds arranged along the first line SDL and within the stretch direction repeat interval RDSD have widths claim 1 , and the ratio of the sum of the lengths to the trans-stretch direction repeat interval RDX is greater than the ratio of the sum of the widths to the stretch direction repeat interval RDSD claim 1 , for any identifiable second ...

HIGH BARRIER NONWOVEN FABRIC

The invention relates to a method for making a nonwoven fabric comprising forming polymer fibers from a melt of the polymer material and using these fibers to obtain a nonwoven fabric during a subsequent nonwoven fabric formation procedure, wherein the melt of the polymer material comprises a melt additive, wherein the method comprises thermal bonding at a temperature higher than 40° C. below the melting point of the polymer material and, additionally, one or both of the following steps: a. improving the mobility of the additive by heat-treating the nonwoven fabric at 100° C. or more for 0.1 seconds or more after the nonwoven fabric formation procedure and/or including a filler having a higher thermal conductivity than the polymer material to the polymer material; b. influencing the polymer crystallinity by including a nucleating agent, branched polymers and/or random co-polymers to the polymer material. 1. A method for making a nonwoven fabric comprising: 'thermal bonding at a temperature higher than 40° C. below the melting point of the polymer material and, additionally, one or both of the following steps:', 'forming polymer fibers from a melt of the polymer material and using these fibers to obtain a nonwoven fabric during a subsequent nonwoven fabric formation procedure, wherein the melt of the polymer material comprises a melt additive,'}a. improving the mobility of the additive by heat-treating the nonwoven fabric at 100° C. or more for 0.1 seconds or more after the nonwoven fabric formation procedure and/or including a filler having a higher thermal conductivity than the polymer material to the polymer material; andb. influencing the polymer crystallinity by including a nucleating agent, branched polymers and/or random co-polymers to the polymer material.2. The method of claim 1 , wherein the polymer material consists of or comprises a thermoplastic polymer.3. The method of claim 1 , wherein the filler has a thermal conductivity that is higher than the ...

Mixed fiber nonwoven fabric and a production method therefor (as amended)

A mixed fiber nonwoven fabric comprising at least two types of fibers, namely, fibers of polyolefin based resin component A and fibers of polyolefin based resin component B, a fiber group containing fibers of polyolefin based resin component A being referred to as first fiber group, the first fiber group having a number average fiber diameter of 0.3 μm to 7.0 μm, part of the fibers of polyolefin based resin component B that have a fiber diameter in the range of 15 μm to 100 μm and not less than 5 times the number average fiber diameter of the first fiber group being referred to as second fiber group, the fibers of the second fiber group maintaining a form of fibers and existing in the cross section of the mixed fiber nonwoven fabric at a rate of 7.0 fibers or more per millimeter of the cross-sectional length, the melting point of polyolefin based resin component B being lower by 5° C. to 40° C. than that of polyolefin based resin component A, and the number average fiber diameter of the mixed fiber nonwoven fabric as a whole being 0.3 μm to 10 μm.

Method Of Making Nonwoven Material Having Discrete Three-Dimensional Deformations With Wide Base Openings That are Base Bonded to Additional Layer

A method of forming a composite sheet that is made of a first sheet and a second sheet is disclosed. The first and second sheets are bonded to each other at a number of spaced apart discrete inter-sheet bond locations. The method involves mechanically deforming a precursor nonwoven web to form a first web with deformations therein. The deformations form protrusions that extend outward from the first surface of the first web and openings in the other surface of the web. The method involves feeding the first nonwoven web with the deformations therein into a bonding nip where portions of the first region of the first web outside of the deformations are bonded to the second web to form a base-bonded composite web.

SYSTEMS AND METHODS OF FILTERING PARTICULATE MATTER FROM A FLUID

Systems and methods of filtering particulate matter from a fluid are provided. In one exemplary embodiment, a system for filtering particulate matter from a liquid comprises a filter having a filter housing, inlet and outlet ports, and compressible filter media with synthetic fibers. Further, the filter media is disposed in the housing between the inlet and outlet ports and is operable to filter particulate matter from the liquid. Also, a pressure difference between the inlet and outlet ports with the filter media disposed in the housing is no more than four pounds per square inch differential. In addition, the system includes a pump that is operationally coupled to the filter and operable to move the liquid through the filter media with a flux rate of at least eighteen gallons per minute per square foot of the filter media while operating at less than one electrical horsepower. 1. A system for filtering particulate matter from a liquid , comprising:a filter having a filter housing, inlet and outlet ports and compressible filter media with synthetic fibers, with the filter media being disposed in the housing between the inlet and outlet ports and being operable to filter particulate matter from the liquid, wherein a pressure difference between the inlet and outlet ports with the filter media disposed in the housing is less than four pounds per square inch differential (4 psid); and{'sup': '2', 'a pump operationally coupled to the inlet port of the filter and operable to move the liquid through the filter media with a flux rate of at least eighteen gallons per minute per square foot (18 GPM/ft) of the filter media while operating at less than one electrical horsepower (1 HPE).'}2. The system of claim 1 , wherein the pump is operable to move the liquid through the filter media with a flux rate of at least eighteen gallons per minute per square foot (18 GPM/ft) while the pump is operating at no more than 0.711 hydraulic horsepower (0.711 HP).3. The system of claim 1 , ...

Method Of Making Nonwoven Material Having Discrete Three-Dimensional Deformations With Wide Base Openings

A method of forming deformations in a nonwoven web includes the steps of: a) providing a precursor nonwoven web; b) providing a pair of forming members which include: a first forming member having a surface comprising a plurality of discrete, spaced apart male forming elements; and a second forming member having a surface comprising a plurality of recesses in the second forming member, wherein the recesses are aligned and configured to receive the male forming elements therein, wherein the recesses have a plan view periphery that is larger than, and may completely surround, the plan view periphery of the male elements; and c) mechanically deforming the precursor nonwoven web with the forming members by placing the precursor nonwoven web between the forming members. The method forms a nonwoven web having a generally planar first region and a plurality of discrete deformations. The deformations form protrusions that extend outward from the first surface of the nonwoven web and a base opening adjacent to the second surface of the nonwoven web. The maximum interior width of the cap portion of the protrusions is wider than the width of the base opening.

Apparatus Having Forming Members With Surface Texture for Making Nonwoven Material Having Discrete Three-Dimensional Deformations With Wide Base Openings

An apparatus for forming deformations in a nonwoven web is disclosed. The apparatus includes a pair of forming members that form a nip therebetween. The forming members include: a first forming member having a surface comprising a plurality of discrete, spaced apart male forming elements; and a second forming member having a surface comprising a plurality of recesses in the second forming member, wherein the recesses are aligned and configured to receive the male forming elements therein, wherein the recesses have a plan view periphery that is larger than, and may completely surround, the plan view periphery of the male elements. At least one of the forming members has a plurality of discrete surface texture elements thereon.

NONWOVEN FABRIC AND PROCESS FOR FORMING THE SAME

A nonwoven fabric having polylactic acid-containing fibers forming a nonwoven web is provided. The web has a side having an alternating pattern of individualized bonded areas which bonded areas define rods arranged in the cross direction of the web. The rods are arranged so that in the machine direction of the web no uninterrupted regions exist along the web while in the cross direction the arrangement of rods defines uninterrupted regions that extend continuously along the web, the alternating pattern of individualized bonded areas defines a non-bonded area. The web has a basis weight from 5-50 g/m, the surface of the bonded areas is from 5-20% of the total surface of the side, and the surface of the non-bonded area is from 80-95% of the total surface of the side. Processes for forming the nonwoven fabric and an absorbent article including the nonwoven fabric are also provided. 1. A nonwoven fabric comprising a plurality of polylactic acid-containing fibers that form a nonwoven web , which fibers are boldly bound perpendicular to the machine direction , wherein the web has a side which is provided with an alternating pattern of individualized bonded areas which bonded areas are in the form of rods that have a linear shape and which are arranged in the cross direction of the web , wherein the rods each in their length direction form an angle of 90° with the machine direction of the web , and the rods are arranged in such a way that in the machine direction of the web no uninterrupted regions exist along the web while in the cross direction of the web the arrangement of the rods defines a plurality of uninterrupted regions that extend continuously along the web , the alternating pattern of individualized bonded areas defines a non-bonded area , the web has a basis weight on the range of from 5-50 g/m , the surface of the bonded areas is in the range of 5-20% of the total surface of the side , and the surface of the non-bonded area is in the range of 80-95% of the ...

SEMIPERMEABLE MEMBRANE SUPPORT

A semipermeable membrane support containing polyolefin-based fibers, which can withstand repeated washing and backwashing, makes it easy for a semipermeable membrane component to permeate thereinto and difficult for the component to strike therethrough, and is excellent in adhesion to the semipermeable membrane and adhesion between a non-coating surface thereof and a resin frame. The semipermeable membrane support which is used by forming the semipermeable membrane thereon is a wet-laid nonwoven fabric containing core-sheath type conjugate fibers composed of polypropylene as a core component and polyethylene as a sheath component and has a burst strength of 300 to 1,000 kPa, or the Bekk smoothness and 75° mirror surface glossiness of the coating surface on which the semipermeable membrane is to be formed of the semipermeable membrane support being more than the Bekk smoothness and 75° mirror surface glossiness of a non-coating surface on the opposite side. 1. A semipermeable membrane support used by forming a semipermeable membrane thereon , which is a wet-laid nonwoven fabric containing core-sheath type conjugate fibers composed of polypropylene as a core component and polyethylene as a sheath component and has a burst strength of 300 to 1 ,000 kPa.2. A semipermeable membrane support used by forming a semipermeable membrane thereon , which is a wet-laid nonwoven fabric containing core-sheath type conjugate fibers composed of polypropylene as a core component and polyethylene as a sheath component , wherein the Bekk smoothness and 75° mirror surface glossiness of the coating surface on which a semipermeable member is to be formed of the semipermeable membrane support are more than the Bekk smoothness and 75° mirror surface glossiness of a non-coating surface on the opposite side.3. The semipermeable membrane support according to claim 2 , wherein the Bekk smoothness of the coating surface on which the semipermeable membrane is to be formed of the semipermeable ...

Wipes having high sustainable content

A cleaning wipe having a high sustainable polymer content is provided. The cleaning wipe includes a fibrous layer having fibers of a melt spinnable sustainable polymer; and an abrasive layer having meltblown fibers of a melt spinnable sustainable polymer. The abrasive layer defining an outer surface of the cleaning wipe, and includes a plurality of abrasive structures formed thereon in which the abrasive structures are formed from conglomerated fibers, meltblown shot, fibers having average diameters greater than 4 micrometers and fibers having a tortuous geometry. The melt spinnable sustainable polymer content of the cleaning wipe is at least 50 weight % by weight of the cleaning wipe. A method of preparing the cleaning wipe is also provided.

INTERLOCKING POLYMERIC MATTING ARTICLE

A polymeric matting article includes a web of extruded polymer monofilaments, the polymer monofilaments being heat welded at junctions to form a matrix of tangled monofilament; and at least one pair of interlocking formations; wherein the web is configured to be foldable onto itself and secured in a folded position by engaging the interlocking formations. 1. A polymeric matting article comprising:a web of extruded polymer monofilaments, the polymer monofilaments being heat welded at junctions to form a matrix of tangled monofilament; andat least one pair of complementary interlocking formations positioned on opposing sides of a fold line;wherein the web is configured to be foldable along the fold line onto itself and secured in a folded position by engaging the complementary interlocking formations.2. The polymeric matting article of claim 1 , wherein the extruded polymer monofilaments comprise a polyolefin claim 1 , polyamide claim 1 , polyester claim 1 , polyvinylhalide claim 1 , polystyrene claim 1 , polyvinylester claim 1 , or a mixture of two or more thereof.3. The polymeric matting article of claim 1 , wherein the interlocking formations comprise an elongated rib and a complementary elongated channel into which the elongated rib fits in a folded position.4. The polymeric matting article of claim 1 , wherein the web comprises top and bottom shell halves and a hinge integrally formed with and interconnecting the top and bottom shell halves claim 1 , the top and bottom shell halves cooperatively defining a filament free cavity.5. A packaging material comprising the polymeric matting article of .6. A building construction material comprising the polymeric matting article of . The present invention relates to a polymeric matting article, and in particular, to a polymeric matting article configured to be foldable onto itself and secured in a folded position by engaging interlocking formations.In one aspect of the invention there is provided a polymeric matting ...

Depth filter

A depth filter with excellent filtration accuracy and pressure resistance performance even for fluids containing high density and high viscosity powder fine particles. A depth filter having a base material layer, a filtration layer, and a skin layer, in that order, wherein: the substrate layer and the skin layer are layers made by a nonwoven fabric being wound and thermally fused; the filtration layer is a laminate in which at least a nonwoven fabric and a net are laminated, being wound twice or more; and the nonwoven fabric contained in the filtration layer contains a mixed-fiber nonwoven fabric containing two or more types of fibers with mutually different average fiber diameters.