СПОСОБ И УСТРОЙСТВО ДЛЯ ПОПЕРЕЧНОГО РАСТЯЖЕНИЯ ЛЕНТОЧНОГО МАТЕРИАЛА

Группа изобретений относится к способу поперечного растяжения неориентированной или ориентированной в продольном направлении пленочной полосы из термопластичной пластмассы и к способу получения пленки с поперечной усадкой. Способ заключается в том, что неориентированную или вытянутую в продольном направлении пленку подают в поперечно-ширильную раму. Поперечно-ширильная рама включает поле нагрева, вытяжное поле и стабилизационное поле. Пленка в начале первого поля нагрева захватывается с обоих краев зажимами цепи с зажимами и нагревается в поле нагрева до температуры TQ поперечного растяжения. В примыкающем вытяжном поле пленка посредством расходящейся V-образной направляющей цепи с зажимами вытягивается в поперечном направлении и в стабилизационных полях находится при температуре TF, причем TQ>TF. Краевые зоны пленки в вытяжном поле и/или в стабилизационных полях так нагревают или так термоизолируют, что краевые зоны пленки при поперечном растяжении и/или при стабилизации имеют более высокую ...

СЛОИСТАЯ ПЛЕНКА, СПОСОБ И УСТРОЙСТВО ДЛЯ ЕЕ ИЗГОТОВЛЕНИЯ, ИЗДЕЛИЕ ИЗ СЛОИСТОЙ ПЛЕНКИ

Использование: для изготовления ориентированной слоистой пленки с продольно-поперечным расположением слоев. Сущность изобретения: слоистая полимерная пленка выполнена с ребрами, толщина которых больше средней толщины слоистой пленки, имеющими в основном вогнутые и в основном выпуклые поверхности, образующие изгибы ребер в поперечном направлении пленки. Материал около ребер и на их краях в ненапряженном состоянии пленки согнут в противоположном направлении по отношению к ребру для придания материалу между двумя соседними ребрами в основном выпрямленной формы. Способ изготовления слоистого материала предусматривает поперечное вытягивание слоистых полимерных пленок при температуре ниже температуры плавления термопластичного материала, стабилизацию во время процесса придания складчатой формы. Условия вытягивания подбирают так, чтобы стабилизированные складчатые участки сохраняли эту форму пли память о ней. Эти складчатые участки восстанавливают, по меньшей мере, частично создавая ребристую ...

СПОСОБ ПОЛУЧЕНИЯ МНОГОСЛОЙНОГО ПОЛИМЕРНОГО МАТЕРИАЛА

Изобретение относится к способу получения многослойного полимерного материала высокой прочности. Сущность изобретения: в способе получения многослойного полимерного материала для внутреннего армирующего слоя с фибриллярной структурой используют материал, состоящий из смеси полиэтилена высокой плотности и полиэтилена низкой плотности. При этом полиэтилен высокой плотности имеет молекулярный вес, значительно превышающий молекулярный вес полиэтилена низкой плотности. Полиэтилен низкой плотности выбирают из группы сополимеров и/или разветвленных полиэтиленов, обладающих одинаковым или более высоким удлинением при разрыве при комнатной температуре и медленном растяжении, чем полиэтилен высокой плотности. Указанные сополимеры и/или разветвленные полиэтилены обладают также способностью заметно отслаиваться от полиэтилена высокой плотности при образовании четкой микрофазы при охлаждении расплавленной гомогенной смеси компонентов материала внутреннего слоя. Кроме того, материал внутреннего армирующего ...

Способ изготовления труб из листового органического стекла

VERFAHREN ZUR HERSTELLUNG VON ULTRAHOCHMODULFASERN ODER- FILMEN.

VERFAHREN UND GERÄT ZUM SEQUENTIELLEN RISSFREIEN STRECKEN EINER SPANNUNGSLOSEN ELASTISCHEN MEHRSCHICHTBAHN

Verfahren zur Herstellung einer seitlich gestreckten fortlaufenden Folie

VERBUNDSTOFF AUS UNELASTISCHEN SCHICHTEN MIT STRECK-UND- RÜCKQUERDEHNFÄHIGKEITEN ALS FLÜSSIGKEITLEITENDES MATERIAL

Improvements in the preparation of polyolefin sheeting

... 980,260. Producing polyolefine film. KODAK Ltd. Feb. 20, 1961 [Feb. 18, 1960; March 21, 1960], No. 6163/61. Drawings to Specification. Heading B5B. [Also in Divisions G2 and H1] Polyolefine film is produced by heating the polyolefine to form a clear melt, forming a sheet therefrom 2 to 10 tissues the desired sheet therefrom 2 to 10 times the desired thickness of the final film, and obtaining the final film from the sheet by passing the sheet between rollers under sufficient pressure to reduce the thickness of the sheet to the desired final thickness, a lubricant covering the surface of the film at the line of pressure. The lubricant may be water (desirably containing a wetting agent), any conventional lubricating oil, lubricating grease or solid lubricant, or any other liquid, grease-like or solid organic substance which has no deleterious effect on the poly-olefines or the processing equipment at the rolling temperatures employed and which has the ability at the rolling temperature of ...

Improvements in rolls for transversely stretching or contracting webs

... 736,674. Stretching webs transversely. ROBERTSON, J. D. Feb. 5, 1951, No. 2809/51. Class 100 (1). A roll for transversely stretching or contracting webs of flexible sheet material comprises an axial shaft, a cover of resilient material and a number of annular members spaced along the shaft for supporting the cover, the central portion of the shaft being curved and the end portions being straight so that sub. stantially equal stretching will be imparted to webs of different widths ranging from that corresponding to the curved part only of the roll to that corresponding to the full width of the roll. A rigid shaft 10, Fig. 1, having a curved central portion and straight end-portions is mounted in clamps 12, such that the shaft may, by loosening the clamps, be swung about the axis passing through the clamps. A series of spaced sleeves 14 are rotatably mounted by ball-bearings on the shaft 10, while a sleeve 16 of rubber encloses the sleeves 14 and rotates therewith when engaged by a travelling ...

Improvements in and relating to the manufacture of films

... Thermoplastic film is stretched transversely whilst heated to a temperature that promotes drawing, the heat being applied locally in a line disposed in a general diagonal direction across the portion of the film being stretched. This localizes the stretch and results in a higher degree of orientation and greater strength for a given stretch ratio. To further localize the stretch, the line heater may be immediately followed by a line cooler. Two adjacent and parallel line heaters may be employed. Suitable line heaters include a hot metal wire bent to the required shape, in coiled form, if desired, and supported at intervals along its length; a metal tube containing hot liquid; a hot-air "knife" comprising a jet of hot air issuing through a slit orifice; or a suitably shaped infra-red heater. The film may travel in contact with or close to the heater. Suitable line coolers include a metal tube through which a cooling liquid ...

STENTER APPARATUS

PROCESS AND APPARATUS FOR TRANSVERSALLY STRETCHING A FILM

TENTERING CLIP CHAIN

In a tentering clip chain movable longitudinally between parallel guide tracks 19a, 19b, each vertically supported clip 1, 4 is guided horizontally by a pair of track rollers 10, 16, with one of the rollers 16 being disposed eccentrically with respect to the other 10 by way of link pin 7, 15. The individual clips 1, 4 are articulatedly connected together by pairs of link plates 2, 3, 5, 6, with each roller 10 being mounted on a link pin 7 between the plates by means of a sleeve 9 and bush 9a. A cylindrical pin extension 15 mounts the second roller 16. ...

TENTERING APPARATUS HAVING A CLIP CHAIN MADE UP OF TENTERING CLIPS

Method for the orientation of a continuous sheet material by means of stretching and apparatus for use in the method

... 987,776. Stretching films and sheets. O. B. RASMUSSEN. Aug. 10, 1962 [Aug. 11, 19611, No. 30793/62. Headings B5A and B5B. Apparatus for the transverse stretching of film and sheet material 5, especially low pressure polyethylene or polypropylene, comprises a cross-fluted roller 6, two cross-beams 7, 8 or, alternatively rollers or rods (not shown), a pair of pulling rollers 9, 10 and a series of wheel-shaped members 11, or alternatively, ball-shaped members (not shown), which pass laterally across the film or sheet by means of an endless chain arrangement (not shown) in the direction of arrow 14. The action of the members 11 causes pressure points to repeatedly move transversely across the sheet material as the material passes through the zone, the pressure exerted being sufficient to permanently stretch longitudinally the sheet material as the material passes through the zone. Passage over the cross-fluted roller 6 causes a slight contraction of the film or sheet over the top of the flutes ...

Rail track arrangement

... 1,038,356. Stretching. MARSHALL & WILLIAMS CORPORATION. June 19, 1964 [Feb. 3, 1964], No. 25400/64. Heading B3E. [Also in Divisions B5 and D1] A rail track arrangement for a tentering machine comprises two oppositely disposed rail track positions each comprising (a) a first main rail section 81, (b) a further main rail section 82, (c) means 40B, Fig. 4 (not shown), joined to the section 81 to move it transversely, (d) means 40C, Fig. 6 (not shown), joined to the section 82 to carry it transversely, (e) a comparatively short rail section, or a serial group D of comparatively short rail sections 106, 107, 108 pivotally joined to one another, pivotally jointed to the section 81 and further pivotally jointed to the section 82, and (f) resilient means 166 . . . 173, Fig. 3 (not shown), interposed (i) between the section 81 and the short rail section or an endmost section 106 of the group D, (ii) between the short rail section or the other endmost section 108 of the group D and the section 82 ...

Film manufacture

... 1,068,487. Stretching films. EASTMAN KODAK CO. Dec. 3, 1965, No. 51500/65. Heading B5B. A film is transversely stretched by a method wherein the edges of the film are gripped by two sets of pinion gear-wheels each located around the periphery of a driving gear-wheel having a toothed periphery while the driving gear-wheels are rotated at the same speed but with their axes at an oblique angle whereby a transverse stretching force is exerted across the film as its edges are carried forward by the driving gear-wheels. In apparatus as shown a film 1 supplied from reel 11 passes through the nip of entry cylinders 2, 21, which run the whole width of the film, and so reaches the vicinity of crimper pinions 4, 41. These crimper pinions under the continuous urging of their associated coilspring (14), (see Fig. 3, not reproduced), force the film into the teeth of the associated driving gear-wheels 3, 31 to form embossed top and bottom surfaces thereon comprising alternating ...

POLARIZING FILM

LAMINATED FILMS

TRANSVERSELY STRETCHING PLASTICS MATERIAL WEBS

Improvements in and relating to the stretching of plastic net for molecular orientation of the mesh strands

... 905,252. Finishing fabrics; netted fabrics. PLASTIC TEXTILE ACCESSORIES Ltd. March 21, 1961 [April 4, 1960], No. 11835/60. Classes 42 (1) and 74 (1). The net strands of an extruded plastic net are molecularly orientated but the net intersections left substantially unstretched by stretching the net in a direction transverse to the lengthwise extent of the net as considered in its direction of extrusion. The net is stretched by the machine shown in Fig. 1 after the plastic has been fixed or set. The margins of a longitudinally slit tubular net fed from a reel 1 are gripped by stenter clips on endless chains 2, 3 which extend parallel to each other in a zone A, preferably a pre-heating zone, and diverge in a zone B. At the end of zone B fixed or rotary knives 9 sever the margins engaged by the clips, the severed edges being deposited as waste on opening of the clips before they re-enter the zone A. The net passes to driven, pressure rolls 7, preferably warmed to flatten the net intersections ...

Method and apparatus for laterally distending foamed sheet material for use in upholstery

... 1,032,732. Upholstery. J. G. M. NIELSEN. Oct. 23, 1963 [Aug. 30, 1963], No. 41896/63. Heading A4M. [Also in Division B5] Material suitable for use in upholstering is formed by passing a sheet of foamed material, e.g. plastics material, having longitudinal rows of slots 2, over a table 3 provided in its upper surfaces with a pair of divergent endless belts 5, the rows of slots being successively opened by frictional engagement with the upper runs of the belts thus causing an overall increase in width of the sheet. By controlling the feeding speed of the sheet and the speed and width of the belts 5 the amount by which the slots are opened, and consequently the increase in overall width of the sheet, may be controlled. Distended sheets thus formed may be laminated to similar distended sheets or undistended sheets.

Apparatus for stretching webs

... An apparatus for stretching a thermoplastic film having beaded or thickened edges comprises a pair of feed rollers and a pair of outlet rollers between which the film travels continuously, a drive mechanism for rotating the feed and outlet rollers at different peripheral speeds, and two spaced-apart rows of pairs of idler rollers for gripping the film edges, the pairs of idler rollers being disposed on opposite sides of the centre of the path of the film between the feed and outlet rollers, one roller of each pair being disposed adjacent to each surface of the film and the idler rollers being adapted to cause the film edges to follow a predetermined path. As shown, a polyethylene terephthalate film which may be coated, as described in Specifications 654,342 and 718, 422, with vinylidene chloride copolymer is fed to feed rollers 2, 21 either from a supply roll, an extrusion device or a treating apparatus wherein the coating is applied. The rollers ...

VERFAHREN ZUR HERSTELLUNG VON CELLULOSISCHEN FLACHFOLIEN

PROCEDURE FOR THE PRODUCTION OF PET FOILS

VERFAHREN ZUR HERSTELLUNG CELLULOSISCHER FORMKÖRPER

Method and apparatus for treating a conveyed in the conveying direction foil element

Um bisher bekannte Verfahren zum Folienverstrecken weiterzuentwickeln, schlägt die Erfindung ein Verfahren zum Behandeln eines in Förderrichtung geförderten Folienelements vor, bei welchem das Folienelement in und/ oder quer zu der Förderrichtung als Nutzen längs- und/ oder quergereckt und zumindest in Förderrichtung gestaucht werden kann, bei welchem das Folienelement als der Nutzen an einer Differierstrecke von einer ersten Fördereinrichtung mit einer ersten Fördergeschwindigkeit zu zweiten Fördereinrichtung mit einer zweiten Fördergeschwindigkeit übergeben wird, und bei welchem die Fördergeschwindigkeiten zueinander verstellt werden, um durch eine Differenz der Fördergeschwindigkeiten eine Längenänderung des Folienelements zu bewirken, dadurch gekennzeichnet, dass der Nutzen (10) in einem schuss-oder taktmäßigen Folienvorschub gemäß einer vorgegebenen Vorschublänge in die Förderrichtung (2) als Halbzeug für eine Weiterverarbeitung gefördert wird und jeder Nutzen in Förderrichtung mehrere ...

PROCEDURE FOR MANUFACTURING CROSSWISE STRETCHED FOILS WITH SUBSTANTIALLY UNIVERSITY-AXIAL ORIENTATION

METHOD AND APPARATUS FOR TREATING A CONVEYED IN THE CONVEYING DIRECTION FOIL ELEMENT

Um bisher bekannte Verfahren zum Folienverstrecken weiterzuentwickeln, schlägt die Erfindung ein V erfahren zum Behandeln eines in Förderrichtung geförderten Folienelements vor, bei welchem das Folienelement in und/ oder quer zu der Förderrichtung als Nutzen längs- und/ oder quergereckt wird, bei welchem das Folienelement an einer Differierstrecke von einer ersten Fördereinrichtung mit einer ersten Fördergeschwindigkeit zu zweiten Fördereinrichtung mit einer zweiten Fördergeschwindigkeit übergeben wird, und bei welchem die Fördergeschwindigkeiten zueinander verstellt werden, um durch eine Differenz der Fördergeschwindigkeiten eine Längenänderung des Folienelements zu bewirken, wobei sich das Verfahren dadurch auszeichnet, dass innerhalb des Nutzens zumindest eine Differenz eingestellt wird, um innerhalb des Nutzens (10) unterschiedlich gereckte Abschnitte oder zumindest einen gereckten Abschnitt (21, 22) und einen ungereckten Abschnitt (23) zu erzeugen.

BONDING MATERIAL WITH VARIABELER ELASTICITY AND ITS MANUFACTURING PROCESS

PROCEDURE FOR THE TRANSVERSE DRAWING OF A MATERIALBAHN

PROCEDURE AND EQUIPMENT FOR GRADUAL UNEVEN ONE DISTANCES OF A MULTI-LAYER COURSE WITHOUT TENSION OF DIFFERENT ELASTICITY.

PROCEDURE FOR THE PRODUCTION OF ULTRAHIGH MODULE FIBERS OR FILMS.

PROCEDURE FOR THE PRODUCTION OF A BOTH STABLE ONE AND SWITCHES FLEECE MATERIAL COURSE

GUIDE RAIL FOR SPANNKLUPPEN IN SPLINTER MACHINES, IN PARTICULAR FOIL PLATE STRETCHERS

PROCEDURE FOR LEADING A MATERIALBAHN

METHOD AND APPARATUS FOR PREPARING A HIGH STRENGTH SHEET MATERIAL

MICRO POROUS POLYETHYLENE FILM BY STRETCHING

Porous PTFE film and a manufacturing method therefor

MICROPLATES WITH ULTRA-THIN WALLS BY TWO-STAGE FORMING

A multi-well plate with wells having ultra-thin walls and yet with sufficient structural rigidity to allow reliable use of the plate in automated instrumentation is formed by first forming a plate blank by injection molding, the blank being of a thickness that provides the desired rigidity, and then subjecting the blank to vacuum forming to stretch designated areas in the blank to form wells or to extend wells already formed, the stretching resulting in a reduction in thickness of the molded resin at the walls of the wells only.

APPARATUS FOR CONTINUOUSLY STRETCHING OR CONTINUOUSLY RELEASING STRETCHING FORCES FROM A WEB USING TWO PAIRS OF OPPOSING NON-PLANAR BELTS

In accordance with the present invention there is provided an apparatus for conveying a web. The apparatus is able to continuously stretch the web or continuously release the stretching forces from a web in the cross-machine direction. The apparatus includes two pairs of opposing belts (21a, 22a, 31a 32a) wherein each belts travels along an endless path. The pairs of belts diverge or converge from each other in the cross-machine direction. Each pair of belts comprises an upper belts (22a, 32a) and a lower belt (21a, 31a) which are adjacent to each other. Each of the upper and lower belts has a non-planar outer surface which contacts the web. The non-planar outer surfaces of each upper belts continuously abuts the non-planar outer surface of its adjacent lower belts along a predetermined distance when traveling in the machine direction. This creates at least one nip for continuously gripping the web while it is being conveyed. The apparatus also includes a means for driving the belts so ...

METHOD FOR PRODUCING CELLULOSED FORMED PARTS

The invention relates to a method for the production of cellulosed flat sheeting and cellulosed membranes in the form of flat membranes, wherein a solution of cellulose in an aqueous tertiary amino oxide is shaped out as sheeting by means of an extrusion die having an oblong extrusion gap, and then passed through an air gap into a regenerating bath, in which the cellulosed flat sheeting is formed. The method is characterized in that the cellulosed flat sheeting is stretched transversally after entry into the regenerating bath.

Procédé d'étirage d'un film extensible et élastoplastique à chaud, et installation pour la mise en oeuvre de ce procédé.

Verfahren zum Verstrecken von thermoplastischen Folienbahnen in der Querrichtung

Procédé de traitement d'une pellicule en matière thermoplastique, pellicule traitée selon ce procédé et installation pour la mise en oeuvre du procédé.

Appareil pour étirer des films de polymères thermoplastiques

Verfahren und Vorrichtung zur Vorbereitung von thermoplastischen Kunststoffolien für die Druckverformung

Vorrichtung zur Behandlung fortlaufender Folienbahnen mit Randwülsten im gespannten Zustand

Verfahren und Einrichtung zum Strecken von thermoplastischen Kunststoffolien

Verfahren und Vorrichtung zur Herstellung von geschäumten Folien

Process and apparatus for the transverse stretching of a continuously travelling web

POLARIZING FOIL AND PROCEDURE FOR YOUR PRODUCTION.

Controlgear is rateed to PET film lateral stretching

Polymer film splicing method and device, and stretching method

The invention relates to a polymer film joint method and a device and a polymer film stretching method. An off-line stretching device includes a film supply chamber, a tenter section, a relaxation chamber, a cooling chamber, and a winding chamber. The film supply chamber includes a splicing section, where a rear end of a preceding film and a front end of a trailing film are overlapped to be spliced to each other by thermal welding. The thermal welding is performed from above and below the film while a temperature of welding heads of a heat sealer, contacting with the film, is kept at a level equal to or less than a decomposition temperature of the preceding and trailing films. The spliced film is stretched in the tenter section and subjected to heat treatment for stress relaxation in the relaxation chamber, to shrink in a film width direction. Since the shrinkage amount of a spliced area and that of a peripheral area become equal to each other, the occurrence of wrinkles in the spliced ...

Method for manufacturing multilayer body having polyimide layers and method for manufacturing polyimide film

PROCESS AND DEVICE FOR the DRAWING OF BANDS Of FASTENERS

Manufactoring process of ribbons, wire, sheets and flexible tubes in polystyrol or similar artificial matters

LATERAL GUIDE RAIL FOR A TRANSPORT SYSTEM, IN PARTICULAR A STRETCHING UNIT

1 축 연신 다층 적층 필름

... (과제) 종래보다 더욱 정면 방향의 휘도가 높은 1 축 연신 다층 적층 필름 및 그것으로 이루어지는 1 축 연신 다층 적층 필름 적층체를 제공한다. (해결 수단) 제 1 층과 제 2 층이 교대로 251 층 이상 적층된 1 축 연신 다층 필름이고, 제 1 층은 2,6-나프탈렌디카르복실산 성분을 함유하는 폴리에스테르를 구성 성분으로 하는 층으로 이루어지고, 제 2 층은 열가소성 수지를 구성 성분으로 하는 층이고, 그 열가소성 수지는 평균 굴절률이 1.60 이상 1.65 이하이고, 또한 부의 광학 이방성 또는 등방성의 수지이고, S 편광 성분에 대해 입사각 0 도 및 50 도에서의 그 입사 편광에 대한 평균 반사율이 각각 90 ％ 이상이고, P 편광 성분에 대해 입사각 0 도에서의 그 입사 편광에 대한 평균 반사율이 15 ％ 이하, 입사각 50 도에서의 그 입사 편광에 대한 평균 반사율이 20 ％ 이상인 1 축 연신 다층 적층 필름에 의해 달성된다.

광학 필름 롤

... 제조 효율을 유지하면서도 우수한 표시 특성을 실현할 수 있는 광학 필름 롤이 제공된다. 본 발명의 광학 필름 롤 (100) 은 액정 셀의 대향하는 1 조의 변에 대응하는 폭을 갖고, 이 액정 셀의 대향하는 다른 1 조의 변에 대응하는 길이로 절단되어, 연속적으로 액정 셀의 표면에 첩합하는 데에 사용된다. 광학 필름 롤 (100) 은 폭 방향으로 흡수축을 갖는 편광막과, 폭 방향으로 반사축을 갖는 반사 편광 필름이 적층된 장척상의 광학 필름 원반을 그 장척 방향으로 반송하면서 반송 방향으로 슬릿 가공함으로써 얻어진 장척상의 광학 필름이 롤상으로 권회되어 있다.

셀룰로오스에스테르 필름 및 셀룰로오스에스테르 필름의 제조 방법

... 본 발명의 과제는, 환경의 습도 변동에 대하여 위상차 변동이 일어나기 어려운 내습성이 우수한 셀룰로오스에스테르 필름을 제공하는 것이다. 또한, 그 제조 방법을 제공하는 것이다. 본 발명의 셀룰로오스에스테르 필름은, 연신된 셀룰로오스에스테르 필름이며, 연신 후의 헤이즈값이, 연신 전으로부터 0.1 내지 0.9배의 범위 내로 조정된 것을 특징으로 한다.

PRODUCING METHOD OF POLYMER FILM

A casting dope (11) prepared from CAP, additive and solvent is cast onto a casting belt (35), peeled and dried to be a primary film (14), and wound to a primary film roll (16). After the storage, the primary film (14) is unwound and fed into a tenter device (18). In the tenter device (18), while the stretch in the widthwise direction is performed, a relaxation of the primary film (14) in the longitudinal direction is made. If an extent percentage of the stretch is less than 70% to the predetermined value, the relation is started. The primary film (14) is fed out as a produced polymer film (22) from the tenter device (18), and the polymer film (22) is wound up to a product film roll (24). On the produced polymer film (22), the in-plane retardation increases and the thickness retardation decreases. Thus the optical properties become preferable. © KIPO & WIPO 2008 ...

연신 필름의 제조 방법 및 편광 필름의 제조 방법

TD(필름 폭방향)로의 고연신 배율의 실현이 가능하고, TD의 축배향성도 우수한 폴리비닐알코올계 수지로 이루어진 연신 필름의 제조 방법, 및 이것을 이용한 양호한 광학 성능을 나타내는 편광 필름의 제조 방법을 제공한다. 폴리비닐알코올계 수지 필름을 연신함으로써 연신 필름을 얻는 연신 공정을 포함하고, 상기 연신 공정은, 동일한 TD 연신 배율에서의 비교에 있어서, MD 수축 배율이 상기 폴리비닐알코올계 수지 필름을 자유단 가로 연신하는 경우의 MD 수축 배율보다 커지도록 TD로의 연신과 MD로의 수축을 동시에 행하는 제1 연신 처리 공정과, MD 수축 배율이 0.17 이상 저하되도록 TD로의 연신과 MD로의 수축을 동시에 행하는 제2 연신 처리 공정을 이 순서로 포함하는 연신 필름의 제조 방법, 및 얻어지는 연신 필름을 이용한 편광 필름의 제조 방법이다.

METHOD AND AN APPARATUS FOR STRETCHING A POLYMER FILM, AND A SOLUTION FILM-FORMING METHOD, CAPABLE OF PREVENTING THE ERROR OF A POLYMER FILM DUE TO A HOLDER

PURPOSE: A method and an apparatus for stretching a polymer film, and a solution film-forming method are provided to evenly stretch a polymer film by preventing the edge of the film from being crumpled. CONSTITUTION: A method and an apparatus for stretching a polymer film(3) and a solution film-forming method include a holding stabilizing process and a stretching process. A polymer film is gripped by a holder in the holding stabilizing process. The gripped width is stretched by gradually increasing the gripped width of the polymer film in the holding stabilizing process. The holding is stabilized by biasing the holder to the closed direction by the retraction of the stretched polymer film in the holding stabilizing process. COPYRIGHT KIPO 2010 ...

Decorative film, image display device, touch panel, and method of producing decorative film

A decorative film, applications for same and a manufacturing method for same, the decorative film comprising a polyester film, a decorative layer, and a hard coating layer, wherein the curl value of the decorative film generated when heat history is applied at a temperature of 150 DEG C for 30 minutes to a decorative film piece that is 50mm long and 50mm wide is not more than 5mm.

METHOD AND DEVICE FOR THE TRANSVERSE DRAWING OF A MATERIAL WEB

The invention relates to a method for the transverse drawing of an unoriented or longitudinally-oriented film web made from thermoplastic plastic. According to said method, an undrawn or longitudinally-drawn film (8) is introduced into a transverse drawing frame in which heater fields (1) are heated to a transverse drawing temperature TQ, in the attached drawing fields (2) a clip chain is drawn in the transverse direction by divergent (V-shaped) guides and a temperature TF is applied to fixing fields where TQ > TF. In the drawing fields and/or the heating fields (1) the boundary zones (5) of the film (8) are heated or thermally insulated such that the boundary zones (5) of the film (8) have a higher temperature than the middle of the film web (6) on transverse drawing and/or fixing.

BASIC STRUCTURE, DEVICE AND METHOD FOR TRANSPORTING FILMS

The invention relates to a basic structure, a device and a method for transporting films in a transport direction, in particular for a stretching installation, wherein at least one upper moving cable and a lower moving cable are guided, and wherein the one upper guided cable and the at least one lower guided cable clamp and entrain the film at least in some places on the lateral edge thereof.

IMPROVED STENTER APPARATUS

Stenter apparatus for stretching a web to produce a relatively thin film comprises two transversely spaced endless chains one the mirror image of the other relative to the stenter centre line (C - C) each chain comprising an inner feed run (9) and an outer return run (10) mounted on supports. Each endless chain is constituted by film clip holders (3) and the chain passes around end sprockets (11B, 12B). The present invention provides a means for lateral adjustement of the feed runs (9) comprising adjustment means for lateral movement of the feed run support relative to the return run support and pivoting portions (10A, 10B) in the outer run support adjacent the end sprockets (11B, 12B) to enable said lateral movement of the feed run. Consequently a major portion of the outer run support does not require to have lateral movement and can be fixed in position and this provides economies in the construction. Further, end sprockets (11B, 12B) of smaller diameter can be used.

APPARATUS FOR CONTINUOUSLY TRANSVERSELY STRETCHING ORIENTABLE SHEET MATERIAL

Apparatus for stretching of fasteners

Method and apparatus for stretching of fastener stock. The stock is of stretchable material and is engaged by members which are spaced apart at an angle and rotate at substantially the same peripheral speed in different planes to stretch the portion of the stock that extends between the members.

Processes and apparatus for making transversely drawn films with substantially uniaxial character

A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.

A device and method for forming tensioned elastication strips, for instance for sanitary articles and corresponding computer program product

A device for forming elastication strips applicable in stretched condition (S'), for example along the waistline of sanitary articles (D) such as diapers and the like, includes at least one pair of combined drawing members (112) suitable for operating in gripping relation on the ends (A) of the strips to receive the strips themselves arranged bridge-like therebetween in non-stretched condition (S) at an inlet end (I) of the device (100), where said drawing members (112) are at a first distance corresponding to the length of the strips (S) in non-stretched condition (S). The drawing members (112) are moveable (102, 104) according to trajectories diverging from each other to draw the strips arranged bridge-like therebetween towards an outlet end (O) of the device (100), where the drawing members are at a second distance, greater than the first distance and corresponding to the length of the strips in elastically stretched condition (S). The drawing members (112) are moved by motor means ( ...

Process and apparatus for making transversely drawn films with substantially uniaxial orientation

A process for stretching films is described. The process preferably stretches films in a uniaxial fashion. Preferably, optical films are stretched including multilayer optical films. Other aspects of the invention include a roll of stretched film and an apparatus for stretching films.

Method and apparatus for stretching thermoplastic polymer films

TRAVERSE DRAWING DEVICE

PURPOSE: To enable traverse drawing without unlocking a net-like body regardless of rigidity by providing a pair of pulleys, a pair of belts for holding the lateral ends of said body between the pulleys to carry the body in outwardly extending manner, and projections for locking the lateral ends of the body. CONSTITUTION: Both ends of a net 2 introduced are held between endless drawing belts 10a, 10b and drawing pulleys 5a, 5b at a point (b). While being heated in a solution 3 such as hot water of about 100°C, the net 2 is transferred along the outer peripheries of the pulleys 5a, 5b in laterally outwardly extended manner, so that the net is extended in a lateral direction up to 6-10 times its width and released at a point C of the end of rail, wherein the net 2 locked at the point (b) is positioned in a manner as shown by a numeral 21 until it reaches a point (d) and tensioned as shown by an arrow A to be drawn. COPYRIGHT: (C)1992,JPO&Japio ...

OPTICAL COMPENSATION FILM AND METHOD FOR MANUFACTURING THE SAME

PROBLEM TO BE SOLVED: To provide a method for manufacturing a film which can freely and independently control wavelength dispersion of Re (in-plane retardation) and wavelength dispersion of Rth (retardation in a thickness direction), can freely control value of Re and value of Rth and in which both of wavelength dispersion of Re and Rth are reverse wavelength dispersion or sequential wavelength dispersion. SOLUTION: A method for manufacturing an optical compensation film includes: a step of heat treatment of a cellulose acylate film at temperature satisfying a condition Tc≤T Подробнее

СЛОИСТАЯ ПЛЕНКА, СПОСОБ И УСТРОЙСТВО ДЛЯ ЕЕ ИЗГОТОВЛЕНИЯ, ИЗДЕЛИЕ ИЗ СЛОИСТОЙ ПЛЕНКИ

Слоистая полимерная пленка с продольно-поперечным расположением слоев, состоящая из двух пленок, каждая из которых одноосно ориентирована или несбалансировано двухосно ориентирована, при этом пленки соединяются так, что их основные оси ориентации перекрещиваются между собой (стадии 1-3), подвергается процессу каландрирования, в котором в направлении, задаваемом машиной, образуются ребра, которые имеют большую толщину, чем участки полотна между ними, и конфигурация которых такова, что обеспечивается сопротивляемость сгибанию по линии, перпендикулярной ребру. Ребра формируются путем последовательного пропускания пленки между снабженными канавками вальцами (латеральное каландрирование, стадии 4 и 6), канавки которых имеют наклонные стенки на противоположно расположенных вальцах, между которыми сжимается материал слоистой пленки путем продольного вытягивания (стадия 5) и путем тепловой обработки (стадия 10). В предлагаемом способе многослойный композиционный материал из двух слоистых пленок ...

РАСТЯЖИМЫЙ ЛАМИНАТ С УЛУЧШЕННЫМИ СВОЙСТВАМИ РАСТЯЖЕНИЯ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

... 1. Растяжимый ламинат, содержащий обратимо суженное нетканое полотно; и эластомерный лист, в котором обратимо суженое нетканое полотно и эластомерный лист после ламинирования были механически вытянуты в поперечном направлении для получения растяжимого ламината, имеющего величину гистерезиса, измеренную во время первого цикла 100-процентного удлинения/сокращения по меньшей мере на 15% ниже, чем у сравнительного нерастянутого растяжимого ламината, или остаточную деформацию, измеренную во время первого цикла 100-процентного удлинения/сокращения по меньшей мере на 10% ниже, чем у сравнительного нерастянутого растяжимого ламината 2. Растяжимый ламинат по п.1, в котором растяжимый ламинат имеет величину гистерезиса по меньшей мере на около 20% меньше, чем у сравнительного нерастянутого растяжимого ламината. 3. Растяжимый ламинат по п.1, в котором растяжимый ламинат имеет величину гистерезиса на 7 день по меньшей мере на 15% меньше, чем у сравнительного нерастянутого растяжимого ламината. 4. Растяжимый ...

Способ получения политетрафторэтиленовой пленки

Устройство для поперечного растягивания и молекулярной ориентации гибкой ткани

... 1.УСТРОЙСТВО ДЛЯ ПОПЕРЕЧНОГО РАСТЯГИВАНИЯ И МОЛЕКУЛЯРНОЙ ОРИЕНТАЦИИ ГИБКОЙ ТКАНИ, ссздержащее пару трупп находящихся на расстоянии в поперечном направлении элементов давления, расположенных ступенчато в поперечном направлении относительно элетлентов давления другой группы с частичным перекрытием их и образованием зазора для прохода гибкой ткани, растягиваемой до образоЛзания складок, причем одна группа элементов давления выполнена в виде смонтированных на приводном валу дисков , отличающее с я тем, что, с целью повышения качества растягивания гибкой ткани, элементы давления по меньшей мере одной .КЗ групп выполнены в виде смонтированных на оси пластин с вогнутой, изготовленной из антифрикционного материала рабочей поверхностью,кривизна которой выполнена соответствуня ей по направлению кривизне рабочей поверхности дисков, при;чем пластины размещены между дисками с возрастающей величиной перекрытия в направлении движения материала . 2. Устройство по П.1, о т л и .4 а ю ,щ е е с я тем, что ...

Spannklammer fuer Spannketten von Rahmenspannern

Maschinen zum Strecken von Gewebe-,Kunststoff- und Filmbahnen

Verfahren und Vorrichtung zur Herstellung von orientierten Zellulose-Folien

Filmrolle einer thermoplastischen Kunststofffolie

VERFAHREN UND VORRICHTUNG ZUR ERHOEHUNG DES PRODUKTIONSAUSSTOSSES BEI DER HERSTELLUNG VON GESTRECKTEN FLACHFOLIENBAHNEN AUS THERMOPLASTISCHEN KUNSTSTOFFEN

VORRICHTUNG ZUM QUERVERLANGEN VON BÄNDERÄHNLICHEN GEGENSTANDEN

VERFAHREN UND GERÄT ZUM SCHRITTWEISE STRECKEN EINER SPANNUNGSLOSEN ELASTISCHEN MEHRSCHICHTBAHN

Verfahren zum kontinuierlichen Verstrecken von thermoplastischen Folien

STENTER RAIL ASSEMBLY

CLAMPING CHAIN ARRANGEMENT

Stretching machine

PROCEDURE AND DEVICE FOR DETERMINING THE CURVATURE VALUE OF AN ORIENTED POLYMER FOIL AND PROCEDURE FOR THE ORIENTATION OF A POLYMER FOIL WITH DETERMINATION OF THE CURVATURE VALUE

DEVICE FOR STRAINING AND/OR NORMALIZING THE STRETCHING RATIO OF THERMOPLASTIC PLASTIC FOILS.

APPARATUS FOR THE TRAVERSING STRAINING OF A FOIL FROM PLASTIC.

VERFAHREN ZUR HERSTELLUNG CELLULOSISCHER FLACHFOLIEN UND IHRE VERWENDUNG

BROAD TRACTION EQUIPMENT FUR FOILS FROM THERMOPLASTIC PLASTIC

Method and Apparatus for Incrementally Stretching a Web

A method and apparatus is provided which uses activation members for incrementally stretching a web at a low strain rate. The activation members include an activation belt and a single activation member wherein the activation belt and single activation member comprise a plurality of teeth and grooves that complement and engage one another at a depth of engagement in a deformation zone. The depth of engagement can be controlled to increase linearly over at least a portion of the deformation zone such that a web interposed between the activation belt and the single activation member in the deformation zone is incrementally stretched at a low rate of strain.

Film stretching machine and film stretching method

A film stretching machine includes a clip chain for holding a lateral edge of a film and stretches the film while transporting the film with the clip chain holding the film and traveling, and includes an upper reference rail disposed at an upper side for guiding the clip chain; a lower reference rail disposed at a lower side for guiding the clip chain; a plurality of clips that constitutes the clip chain; an interval adjusting rail for adjusting intervals of the plurality of clips; and interval adjusting links that couple neighboring clips among the plurality of clips and contact with the interval adjusting rail to adjust the intervals of the plurality of clips. According to the film stretching machine, a stretch degree of a film can be adjusted with a simple configuration and little man-hours.

Rail support device and sheet stretching method

A rail support device installed in a clip chain type sheet stretching apparatus configured to stretch a sheet includes a first rail support member, a second rail support member, and an arc shaped rail support member. The arc shaped rail support member is engaged with each of the connecting portions of the first and second rail support members to form a higher pair. The rail support device is symmetrical with respect to an intersection angle bisecting plane which is a plane developing in a vertical direction and including an intersection angle bisector.

Film Formed from a Blend of Biodegradable Aliphatic-Aromatic Copolyesters

A film that is formed from a biodegradable polymer blend of different aliphatic-aromatic copolyesters is provided. More specifically, the blend contains a first copolyester formed from a terephthalic acid monomer. The use of a terephthalic acid monomer results in a polymer chain containing 1,4-(para-)terephthalate units linked in a generally linear configuration (e.g., ˜180°). The blend also contains a second aliphatic-aromatic copolyester formed from a phthalic acid and/or isophthalic acid monomer.

Matte Multi-Layer Films Having Improved Sealing Properties

Multi-layer structures including an oriented multi-layer polymeric film wherein the multi-layer film includes a heat sealable skin layer that includes a matte resin composition and 0.5 to <50.0 wt % of an elastomer selected from propylene based elastomers, ethylene-based elastomers and mixtures thereof, wherein the elastomer or mixture thereof has a Vicat softening temperature of >50° C.; wherein the heat sealable skin layer has a Haze >45.0 % and a 45° Gloss <20.0 and a core layer comprising a polypropylene homopolymer or mini-random copolymer in surface contact with the heat sealable skin layer are disclosed. Optionally, the multi-layer structures can also include a substrate in surface contact with the oriented multi-layer polymeric film. Methods of making such multi-layer structures and articles made therefrom are also disclosed.

Crosslaminate of oriented films and methods and apparatus for manufacturing same

A crosslaminate is formed from two oriented plies of thermoplastic polymer material, arranged so that their orientation directions cross one another, the plies being heat sealed together. Each ply is semi-fibrillated, that is consist of linear thin regions of biaxially oriented material and thicker linear bosses between the thinner regions. The webs are sealed primarily through bonds formed at the intersection of the bosses (thicker regions). The array of bosses has a division less than 2 mm. The laminate has improved aesthetic and strength properties. A method for forming the crosslaminate involves segmental stretching of the material to form the thinner regions, and apparatus comprising intermeshing grooved stretching rollers having sharp-edged crests is described.

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 and Apparatus for Incrementally Stretching a Web

A method and apparatus is provided which uses activation members for incrementally stretching a web at a low strain rate. The activation members include an activation belt and a single activation member wherein the activation belt and single activation member comprise a plurality of teeth and grooves that complement and engage one another at a depth of engagement in a deformation zone. The depth of engagement can be controlled to increase linearly over at least a portion of the deformation zone such that a web interposed between the activation belt and the single activation member in the deformation zone is incrementally stretched at a low rate of strain. 1. A method of incrementally stretching a web , the method comprising the steps of:a. providing a web;b. providing a single activation member comprising a plurality of teeth and grooves;c. providing an activation belt comprising a plurality of teeth and grooves that complement the plurality of teeth and grooves of the single activation member;d. forming a deformation zone between the activation belt and the single activation member wherein the plurality of teeth and grooves of the single activation member engage the plurality of teeth and grooves of the activation belt at a controlled depth of engagement capable of increasing linearly over the deformation zone; ande. conveying the web through the deformation zone wherein the web is incrementally stretched.2. The method according to wherein the single activation member comprises a single activation roll having a plurality of circumferential teeth and grooves.3. The method according to wherein the deformation zone is formed between a first section of a plurality of teeth and grooves of the activation belt and an arcuate section of a plurality of circumferential teeth and grooves of the single activation roll.4. The method according to wherein the depth of engagement is controlled by a series of back-up rollers arranged along the deformation zone forcing the first ...

Process for producing polyimide film, polyimide film and laminate comprising the same

The present invention relates to a polyimide film prepared from a tetracarboxylic acid component and a diamine component, wherein the strength of orientation anisotropy in the film length of 2000 mm is 1.2 or less and/or the strength of orientation anisotropy in the film length of 1800 mm is 1.1 or less.

PROCESS AND APPARATUS FOR REGISTERED EMBOSSING OF EXTENSIBLE PRINTED FILM OR OF A LAMINATE COMPRISING AN EXTENSIBLE PRINTED FILM

In an embodiment, a process for synchronized embossing of an extensible printed film or of a laminate product including an extensible printed film is disclosed. The process includes pre-heating the film; possible coupling of the pre-heated film with a substrate; passage of the film or of the laminate between an engraved embossing cylinder; and a pressing counter-cylinder, in which the extensible film is subjected to a controlled elongation, in the longitudinal direction only, during the pre-heating step, during which the film is in a thermoplastic state, and said controlled elongation is such as to synchronize the decoration printed on the film with the position of the embossing cylinder. 1. A process for synchronized and continuous embossing of an extensible printed film or a laminate product including an extensible printed film , wherein the extensible printed film is printed with a decoration having a pitch of repetition (“printing pitch”) , and includes a plurality of reference marks printed on the film itself , the process comprising:a first step of pre-heating the printed film;an optional step of coupling the pre-heated printed film with a substrate obtaining a laminate;embossing the film or laminate thus obtained by means of the action of at least one engraved rotary embossing cylinder;acquiring a measure which is directly or indirectly correlated to the angular position of the engraved cylinder relative to at least one reference mark of the film; andsubjecting the extensible film to a controlled elongation during the pre-heating step, the extent of the controlled elongation being determined as a function of the measure, and such as to bring the decoration printed on the film in registration with respect to the angular position of the engraved embossing cylinder;wherein the controlled elongation is obtained through a deformation of the film in a longitudinal direction of advance motion of the film, and the deformation of the film having a substantially null ...

Incrementally-Stretched Thermoplastic Films With Enhanced Look and Feel and Methods for Making The Same

Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges. 1. A machine-direction incrementally-stretched film with increased loft formed by stretching an un-stretched thermoplastic film , comprising:a thermoplastic material; a plurality of thick linear ribs extending in the transverse direction across the machine-direction incrementally-stretched film, and', 'a plurality of thin linear ribs extending in the transverse direction across the machine-direction incrementally-stretched film; and, 'a ribbed pattern includinga plurality of undulations extending across the film generally in the transverse direction, wherein the plurality of undulations are positioned within the thin linear ribs.2. The machine-direction incrementally-stretched film as recited in claim 1 , wherein the plurality of undulations comprise alternating peaks and valleys.3. The machine-direction incrementally-stretched film as recited in claim 2 , wherein a loft of the peaks and valleys is greater than a starting gauge of the un-stretched thermoplastic film.4. The machine-direction incrementally-stretched film as recited in claim 1 , further comprising alternating thick and thin linear ribs extending in the machine direction.5. The machine-direction incrementally-stretched film as recited in claim 1 , further comprising a second film secured to the machine-direction incrementally-stretched film.6. The machine-direction incrementally-stretched film as recited in claim 5 , further comprising a plurality of non-continuous bonds between ...

Apparatus and Method for Making a Layered Elastic Substrate

A method for making a layered elastic substrate includes advancing a first substrate layer and a second substrate layer in a machine direction. An elastic material is advanced in the machine direction in a stretched state. The elastic material may be bonded to the first substrate layer and the second substrate layer in a stretched state to form a layered elastic substrate. The layered elastic substrate may advance through a first metering device at speed, V, and through a second metering device at speed, V, subsequent to advancing through the first metering device, wherein V is greater than V. As a result, the elastic material, and thus the layered elastic substrate, may be stretched to a first elongation at the first metering device and relaxed to a second elongation at the second device. The layered elastic substrate is cut and bonded to a continuous length of web material. 1. A method for making a layered elastic substrate , the method comprising the steps of:advancing a substrate in a machine direction, the substrate defining a first edge region and a second edge region separated by an inner region along a cross direction, the substrate having a first surface and an opposing second surface;advancing an elastic material in a stretched state in the machine direction;bonding the elastic material in the stretched state to the first surface of the substrate;folding the substrate to position the first surface of the first edge region into a facing relationship with the first surface of the inner region;folding the substrate to position the first surface of the second edge region into a facing relationship with the first surface of the inner region to form a layered elastic substrate;{'b': '1', 'advancing the layered elastic substrate through a first metering device at speed, V; and'}{'b': 2', '1', '2, 'advancing the layered elastic substrate through a second metering device at speed, V, subsequent to advancing the layered elastic substrate through the first metering ...

METHOD AND APPARATUS FOR PRODUCING ELASTIC LAMINATES

A method and apparatus for producing elastic laminates wherein a first and a second elastic film are stretched in the transverse direction by respective spreader devices, and are applied on a transfer wheel which—in turn—applies the first and second elastic films on a non-woven web held on the outer cylindrical surface of an anvil wheel. 1. A method for producing elastic laminates , comprising:feeding a first and a second elastic film,stretching the first and second elastic films in a transverse direction on a first and a second spreader device,applying the first and second elastic films stretched in the transverse direction on an outer circumferential surface of a transfer wheel rotatable around a first axis of rotation, wherein the first and second elastic films are applied onto the outer circumferential surface of the transfer wheel in a first and a second application zone axially and angularly displaced with respect to each other with respect to said first axis of rotation,applying a first non-woven web on an outer cylindrical surface of an anvil wheel rotatable around a second axis of rotation parallel to the first axis of rotation,transferring the first and second elastic films from the transfer wheel to the first non-woven web held on the outer cylindrical surface of the anvil wheel in a third and a fourth application zone displaced with respect to each other in an axial direction and angularly aligned with each other with respect to said second axis of rotation,applying a second non-woven web on the anvil wheel above said first and said second elastic films, andforming an elastic laminate by fixing on the anvil wheel the first and second non-woven web through the first and second elastic films.2. The method according to claim 1 , comprising joining to each other the first and the second non-woven web according to a uniform pattern both at the first and second elastic films and in a central portion comprised between said elastic films.3. The method according ...

MICROPOROUS BREATHABLE FILM AND METHOD OF MAKING THE MICROPOROUS BREATHABLE FILM

Microporous breathable films include a polyolefin and an inorganic filler dispersed in the polyolefin. Methods for forming polymeric films and articles of manufacture prepared therefrom are described. 1. A process for making a microporous breathable film comprising the steps ofextruding a composition comprising a polyolefin and an inorganic filler to form a molten web,casting the molten web against a surface of a chill roll using an air knife, air blanket, a vacuum box, or a combination thereof to form a quenched film, andstretching the quenched film to form the microporous breathable film.2. The process of claim 1 , wherein the polyolefin comprises polyethylene claim 1 , polypropylene claim 1 , or a combination thereof.3. The process of claim 1 , wherein the polyolefin comprises low density polyethylene claim 1 , high density polyethylene claim 1 , linear low density polyethylene claim 1 , ultra-low density polyethylene claim 1 , or a combination thereof.4. The process of claim 1 , wherein the polyolefin comprises linear low density polyethylene.5. The process of claim 1 , wherein the polyolefin comprises linear low density polyethylene and the linear low density polyethylene comprises a metallocene polyethylene.6. The process of claim 1 , wherein the polyolefin comprises polypropylene.7. The process of claim 1 , wherein the inorganic filler comprises from about 30% to about 75% by weight of the microporous breathable film.8. The process of claim 1 , wherein an average particle size of the inorganic filler is between about 0.1 microns and about 15 microns.9. The process of claim 1 , wherein the inorganic filler is selected from the group consisting of sodium carbonate claim 1 , calcium carbonate claim 1 , magnesium carbonate claim 1 , barium sulfate claim 1 , magnesium sulfate claim 1 , aluminum sulfate claim 1 , magnesium oxide claim 1 , calcium oxide claim 1 , alumina claim 1 , mica claim 1 , talc claim 1 , silica claim 1 , clay claim 1 , glass spheres claim 1 , ...

Retardation film and production method therefor, polarizing plate, and display device

Provided is a producing method for a retardation film with a reverse wavelength dispersion property, which is highly reliable in terms of a small wavelength dispersion change and is low in display unevenness due to a position dependence of a retardation variation. The production method is designed for a retardation film which satisfies the following formulas (1) and (2): 0.7<Re 1 [450]/Re 1 [550]<0.97 - - - (1); and 1.5×10 −3 <Δn<6.0×10 −3 - - - (2) (where: Re 1 [450] and Re 1 [550] represent, respectively, in-plane retardation values thereof as measured by using light of a wavelengths of 450 nm and light of a wavelength of 550 nm, at 23° C.; and Δn represents an in-plane birefringence thereof as measured by using light of a wavelength of 550 nm). This method comprises: a step of continuously conveying and supplying a long polymer film; a stretching step of stretching the polymer film in a direction transverse to a conveyance direction; a first shrinkage step of, after the stretching step, causing the polymer film to shrink in the transverse direction; and a second shrinkage step of, after the first shrinkage step, causing the polymer film to shrink in the transverse direction, wherein a shrinkage temperature T 1 (° C.) in the first shrinkage step and a shrinkage temperature T 2 (° C.) in the second shrinkage step satisfy the following formula (3): 1<(T 1 −T 2 )≦10 - - - (3).

METHOD OF PRODUCING MICROPOROUS PLASTIC FILM

A method of producing a microporous film includes kneading a diluent and a polyolefin resin with an extruder; discharging the polyolefin resin kneaded with the diluent from a die lip in a sheet shape; cooling and solidifying the sheet discharged from the die lip on a drum; reheating and drawing the solidified sheet with a plurality of rollers in a sheet conveying direction; cooling the sheet drawn in the sheet conveying direction; gripping both ends of the sheet with clips; introducing the sheet into a tenter; washing the diluent out to prepare a uniaxially or biaxially oriented microporous plastic film, wherein drawing is performed by a draw ratio greatest among drawing in the sheet conveying direction, and a ratio of travelling speed of the clip of the tenter at a most upstream side in the sheet conveying direction to a peripheral speed of the roller (B) is −3% to +3%. 15.-. (canceled)6. A method of producing a microporous plastic film comprising:kneading a diluent and a polyolefin resin with an extruder;discharging the polyolefin resin kneaded with the diluent from a die lip in a sheet shape;cooling and solidifying the sheet discharged from the die lip on a drum;reheating and drawing the solidified sheet with a plurality of rollers in a sheet conveying direction;cooling the sheet drawn in the sheet conveying direction;gripping both ends of the sheet with clips;introducing the sheet into a tenter; andwashing the diluent out to prepare a uniaxially or biaxially oriented microporous plastic film, whereindrawing between a roller (B) at a most downstream side in the sheet conveying direction among the rollers and a roller (A) which is adjacently upstream of the roller (B) in the sheet conveying direction and is driven by a motor is performed by a draw ratio greatest among drawing in the sheet conveying direction, anda ratio of travelling speed of the clip of the tenter at a most upstream side in the sheet conveying direction to a peripheral speed of the roller (B) is ...

STRETCHING SYSTEM

An improved stretching system has the possibility of reducing the distance between two successive guide clips, for example. In technical terms, this is solved by using control clips. For example, a control clip can be provided between two successive guide clips and causes the distance between two successive guide clips to be altered by way of a lateral position adjustment by means of a control rail. 2. Stretching system according to claim 1 , wherein the following features:the guide rail comprises a guide rail surface on the film side and a rear guide rail surface facing away therefrom,the guide clips comprise guide rollers or sliding guide elements, the guide rollers or the sliding guide elements of the guide clips are meshed either at least with the rear guide rail surface or only with the rear guide rail surface,the control clips comprise control rollers or sliding control elements, andover the at least one second section, the control rollers or the sliding control elements of the control clips are meshed with the control rail surface facing the film or only with the control rail surface facing the film, and, over the first section, are meshed with the film-side guide rail surface or only with the film-side guide rail surface.3. Stretching system according to claim 1 , wherein the following features:the guide rail comprises a guide rail surface on the film side and a rear guide rail surface facing away therefrom,the guide clips comprise guide rollers or sliding guide elements,the guide rollers or the sliding guide elements of the guide clips are meshed either at least with the film-side guide rail surface or only with the film-side guide rail surface,the control clips comprise control rollers or sliding control elements, andover the at least one second section, the control rollers or the sliding control elements of the control clips are meshed with the rear control rail surface or only with the rear control guide surface, and, over the first section, are meshed ...

VAPOR-PERMEABLE, SUBSTANTIALLY WATER-IMPERMEABLE MULTILAYER ARTICLE

This disclosure relates to an article (e.g., a vapor-permeable, substantially water-impermeable multilayer article) that includes a nonwoven substrate and a film supported by the nonwoven substrate. The film includes a polyolefin, a nanoclay, and a pore-forming filler. 123-. (canceled)24. A method of making an article , comprising:forming a laminate comprising a nonwoven substrate and a film supported by the nonwoven substrate, the film comprising a polyolefin, a nanoclay, and a pore-forming filler; andstretching the laminate to form pores in the film and to provide the article.25. The method of claim 24 , wherein forming the laminate comprises extruding the film onto the nonwoven substrate.26. The method of claim 24 , wherein the elevated temperature is at least about 30° C.27. The method of claim 24 , wherein the laminate is stretched in the machine direction.28. The method of claim 24 , wherein the laminate is stretched in the cross-machine direction.29. The method of claim 24 , wherein the laminate is stretched by a method selected from the group consisting of ring rolling claim 24 , tentering claim 24 , embossing claim 24 , creping claim 24 , and button-breaking.30. The method of claim 24 , further comprising embossing the laminate before or after stretching the laminate.31. The method of claim 24 , further comprising bonding randomly disposed polymeric fibers to produce the nonwoven substrate before forming the laminate.3235-. (canceled)36. The method of claim 24 , wherein the nanoclay comprises particles having an average aspect ratio of from 200 to about 500.37. The method of claim 24 , wherein the nanoclay has an average thickness of from about 0.5 nm to about 2 nm.38. The method of claim 24 , wherein the film comprises from about 0.1% by weight to about 20% by weight of the nanoclay.39. The method of claim 24 , wherein the polyolefin comprises a polyethylene claim 24 , a polypropylene claim 24 , or a copolymer thereof.40. The method of claim 39 , wherein ...

Elastic Laminates and Methods for Assembling Elastic Laminates for Absorbent Articles

The present disclosure relates to elastic laminates and methods for assembling elastic laminates that may be used to make absorbent article components. Elastic laminates may include one or more reinforcement layers positioned between unstretched portions of elastic materials and substrates to which the elastic materials are bonded. 1. A taped absorbent article comprising:a topsheet;a backsheet;an absorbent core positioned at least partially intermediate the topsheet and the backsheet;a front waist region;a back waist region; anda discrete ear laminate joined to the front waist region or the back waist region and extending outwardly therefrom; a first nonwoven substrate;', 'a second nonwoven substrate; and', 'an elastic material positioned at least partially intermediate the first nonwoven substrate and the second nonwoven substrate;', 'wherein the first nonwoven substrate partially overlaps itself to create a folded over portion;', 'wherein the folded over portion overlaps a first portion of the elastic material; and', 'wherein the elastic material is free of overlap from itself., 'wherein the discrete ear laminate comprises2. The taped absorbent article of claim 1 , wherein the elastic material is generally planar and free of folds.3. The taped absorbent article of claim 1 , comprising a fastener comprising a fastener element claim 1 , wherein a portion of the fastener overlaps a portion of the folded over portion.4. The taped absorbent article of claim 1 , comprising a reinforcement layer intermediate the first nonwoven substrate and the second nonwoven substrate.5. The taped absorbent article of claim 4 , wherein the reinforcement layer overlaps a second portion of the elastic material.6. The taped absorbent article of claim 4 , wherein the reinforcement layer is positioned proximate to a first end of the discrete ear laminate claim 4 , and wherein the folded over portion is positioned proximate to a second end of the discrete ear laminate.7. The taped absorbent ...

HEAT-SHRINKABLE POLYESTER FILM ROLL

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

MANUFACTURING PROCESS FOR ELASTOMERIC LAMINATE

A process for making an elastomeric laminated product including the steps of laminating an elastomeric film between a first spunbond nonvowen layer and a second spunbond nonwoven layer so as to form a laminated web, transporting the laminated web through intermeshing rollers so as to strain portions of the laminated web to form activated regions in the laminated web, and transporting the activated laminated web to a first portion of a rotating wheel, the first portion of the wheel having a cross direction width that is smaller than a cross direction width at a second portion of the wheel, so that the laminated web follows rotation of the wheel and is stretched in the cross direction at the second portion of the wheel before separating from the wheel at the first portion in a relaxed state. 1. An elastomeric laminated product made in accordance with the following process:laminating an elastomeric film between a first spunbond nonwoven layer and a second spunbond nonwoven layer so as to form a laminated web;transporting the laminated web through intermeshing rollers so as to strain portions of the laminated web to form activated regions in the laminated web;after the step of transporting, applying heat to non-activated regions of the activated laminated web and drawing the activated laminated web in the machine direction so as to elongate the non-activated regions; andtransporting the activated laminated web to a first portion of a rotating wheel, the first portion of the wheel having a cross direction width that is smaller than a cross direction width at a second portion of the wheel, so that the laminated web follows rotation of the wheel and is stretched in the cross direction at the second portion of the wheel before separating from the wheel at the first portion in a relaxed state.2. The elastomeric laminated product of claim 1 , wherein the intermeshing rollers comprise at least two sets of a plurality of intermeshed protrusions so that at least two ...

HEAT-SHRINKABLE FILM FOR LABEL WITH LOW SPECIFIC GRAVITY AND METHOD FOR PREPARING THE SAME

A heat-shrinkable label film includes a foamed layer having polystyrene as a principal component, and a pair of non-foamed layers adhesively melted to either side of the foamed layer, wherein the foamed layer and the pair of the non-foamed layers are coextruded to provide a low specific gravity less than 1.0. The film is prepared by coextruding to form the several layers completing a non-drawn film; and drawing the non-drawn film in a transverse direction (TD) at a drawing ratio of 3.5 to 5.5. The foamed ratio of the foamed layer is in the range of 5 to 20%. The thickness of the foamed layer is 60 to 90% of the total thickness of the film; and the thickness of each non-foamed layer is 5 to 20% of the total thickness of the film. The heat-shrinkable label film has a thickness of 30 to 60 μm. 11020101020. A heat-shrinkable film for label , which comprises a foamed layer comprising polystyrene as a principal component , and a pair of non-foamed layers adhesively melted to either side of the foamed layer , wherein the foamed layer and the pair of the non-foamed layers are layered by coextrusion to provide a low specific gravity less than 1.0.21020. The heat-shrinkable film of claim 1 , wherein the thickness of the foamed layer is 60 to 90% of the total thickness of the film claim 1 , and the thickness of each non-foamed layer is 5 to 20% of the total thickness of the film.310. The heat-shrinkable film of claim 1 , wherein the foamed ratio of the foamed layer is in the range of 5 to 20%.4. The heat-shrinkable film of claim 1 , wherein the film has a thickness of 30 to 60 μm.51020. The heat-shrinkable film of claim 4 , wherein the foamed layer comprises 30 to 95% by weight of a styrene-butadiene copolymer and 5 to 70% by weight of a general-purpose polystyrene claim 4 , and the non-foamed layers comprises 30 to 95% by weight of a styrene-butadiene copolymer claim 4 , 4.9 to 65% by weight of a general-purpose polystyrene claim 4 , and 0.1 to 5% by weight of a high-impact ...

PTFE LAYERS AND METHODS OF MANUFACTURING

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

Incrementally-stretched thermoplastic films with enhanced look and feel and methods for making the same

Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges.

STRETCHED FILM MANUFACTURING METHOD AND STRETCHED FILM

A method for manufacturing a stretched film, including stretching a long-length resin film in an oven by grippers while conveying the resin film to pass the resin film through the oven to manufacture a long-length stretched film having a slow axis within an average angle range of 10° or more and 80° or less with respect to a width direction thereof, wherein the oven has a stretching zone and a heat setting zone in this order from an upstream side, and the method includes the steps of: holding the both edges of the resin film by the grippers; stretching the resin film in the stretching zone; releasing the resin film from the grippers in the heat setting zone; and subjecting the resin film released from the grippers to a heat treatment at a temperature higher than Tg−10° C. and lower than Tg for 10 seconds or more in the heat setting zone. 1. A method for manufacturing a stretched film , including stretching a long-length resin film in an oven by grippers holding both edges of the resin film while conveying the resin film to pass the resin film through the oven to manufacture a long-length stretched film having a slow axis within an average angle range of 10° or more and 80° or less with respect to a width direction thereof , whereinthe oven has a stretching zone and a heat setting zone in this order from an upstream side, andthe method comprises the steps of:holding the both edges of the resin film by the grippers;stretching the resin film in the stretching zone;releasing the resin film from the grippers in the heat setting zone; andsubjecting the resin film released from the grippers to a heat treatment at a temperature higher than Tg−10° C. and lower than Tg (Tg represents a glass transition temperature of a resin for forming the resin film) for 10 seconds or more in the heat setting zone.2. The method for manufacturing a stretched film according to claim 1 , wherein a conveyance tension for the resin film in the step of subjecting the resin film to the heat ...

STRETCHABLE MODIFIED POLYESTER FILM FOR IN-MOLD DECORATION FILM

A stretchable modified polyester film, and more particularly to a modified polyester film for in-mold decoration film and having high extensibility, high light transmittance, low shrinkage (high temperature resistance) and the like is provided. The stretchable polyester film is suitable to serve as a stretchable modified polyester film for an in-mold decoration film. The stretchable modified polyester film includes following components: (a) a polyester resin and (b) an acrylic resin. 1. A stretchable modified polyester film for an in-mold decoration film processed by extending 2.0 to 5.0 times along a transverse direction (TD) and 2.0 to 5.0 times along a machine direction (MD) , comprising:(a) a polyester resin, which accounts for 10 to 99.99 parts by weight and is a polymer compound obtained by polycondensation of a dibasic acid and a diol or a derivative thereof; and(b) an acrylic resin, which accounts for 0.01 to 60 parts by weight, and has the average molecular weight (Mw) between 10,000 and 80,000;wherein the physical properties of the stretchable modified polyester film satisfies the following conditions: light transmittance>88%; draw ratio>150%; shrinkage rate<5% at 150° C. for 30 min.2. The stretchable modified polyester film according to claim 1 , wherein the polyester resin is selected from PET claim 1 , PBT or PEN polyester resins.3. The stretchable modified polyester film according to claim 1 , wherein the acrylic resin is obtained by polymerizing an acrylic monomer claim 1 , and is selected from methyl (meth)acrylate (MMA) claim 1 , ethyl acrylate (EA) claim 1 , propyl (meth)acrylate (PA) claim 1 , n-butyl acrylate (BA) claim 1 , isobutyl (meth)acrylate (IBA) claim 1 , amyl methacrylate claim 1 , hexyl (meth) acrylate claim 1 , heptyl (meth) acrylate claim 1 , octyl (meth) acrylate claim 1 , 2-ethylhexyl (meth) acrylate (2-HEA) claim 1 , n-octyl (meth)acrylate (OA) claim 1 , isooctyl (meth) acrylate (IOA) claim 1 , decyl (meth) acrylate (NA) claim 1 , ...

METHOD FOR PRODUCING STRETCHED FILM

The present invention is a method for producing a stretched film comprising stretching an unstretched film that is formed using a hydrogenated dicyclopentadiene ring-opening polymer at a temperature of 95 to 135° C. and a stretching ratio of 1.2 to 10, followed by heating at a temperature of 150 to 220° C. Since the thus-obtained stretched film has excellent transparency and low coefficient of linear expansion, the stretched film is suitable for not only use in optical applications but also use for electronic materials. 1. A method for producing a stretched film comprising stretching an unstretched film that is formed using a hydrogenated dicyclopentadiene ring-opening polymer at a temperature of 95 to 135° C. and a stretching ratio of 1.2 to 10 , followed by heating at a temperature of 150 to 220° C.2. The method for producing a stretched film according to claim 1 , wherein the hydrogenated dicyclopentadiene ring-opening polymer is a crystalline resin.3. An optical film produced using the method for producing a stretched film according to .4. An electronic material produced using the method for producing a stretched film according to . The present invention relates to a method for producing a stretched film having a low coefficient of linear expansion. The resulting stretched film may suitably be used as an optical material and an electronic material due to a low coefficient of linear expansion.An alicyclic structure-containing polymer that is produced from a norbornene-based monomer (e.g., dicyclopentadiene) using a normal production method is an amorphous resin that does not have a melting point. A crystalline resin that has a melting point can be obtained by subjecting dicyclopentadiene to ring-opening polymerization using a specific catalyst, and hydrogenating the carbon-carbon double bonds included in the resulting ring-opening polymer.Patent Documents 1 and 2 disclose that a hydrogenated dicyclopentadiene ring-opening polymer (i.e., crystalline resin) can ...

DEVICE AND METHOD FOR TRANSPORTING FILM

Method and device for the transport of foil in a transport direction, in particular, for an stretching plant, wherein at least one upper moving rope and at least one lower moving rope are guided, and the at least one upper moving rope and the at least one lower moving rope clamp the foil at its lateral edge at least in places and take it along. 111001. Base structure () for a device for the transport of foil () , wherein the base structure () comprises:{'b': 60', '50, 'at least one upper guide unit () and a lower guide unit (), wherein'}{'b': 60', '10', '3', '50', '10', '1', '10', '2, 'the upper guide unit () is configured so as to guide at least one upper moveable rope (-), and the lower guide unit () is configured so as to guide at least one lower movable rope (-, -), wherein'}{'b': 10', '3', '10', '1', '10', '2', '100, 'the at least one upper rope (-) and the at least one lower rope (-, -) can be arranged so as to clamp the foil () at its lateral edge at least in places and to take it along, and wherein'}{'b': 60', '50', '60', '100', '10', '3', '60', '10', '1', '10', '2', '50, 'at least one guide unit () of the guide units (, ) is configured so as to push the foil () by means of the at least one guided rope (-) guided by the guide unit () against the at least one rope (-, -) guided by the other guide unit ().'}21506020304045101102103. Base structure () according to claim 1 , wherein each guide unit ( claim 1 , ) comprises a number of roller elements ( claim 1 , claim 1 , claim 1 , ) claim 1 , which are configured so as to guide the respective at least one rope (- claim 1 , - claim 1 , -).31202010110250. Base structure () according to claim 2 , wherein at least one roller element () of the number of roller elements () is arranged below the at least one rope (- claim 2 , -) guided by the at least one lower guide unit () claim 2 , and{'b': 30', '30', '60', '10', '3', '60, 'wherein at least one roller element () of the number of roller elements () is arranged at the ...

SLIDING ELEMENT, IN PARTICULAR FOR A STRETCHING INSTALLATION AND/OR CONVEYOR CHAIN, AND ASSOCIATED STRETCHING INSTALLATION OR CONVEYOR CHAIN

The invention relates to a sliding element, in particular for a stretching installation and/or a conveyor chain, comprising graphite or electrographite, wherein the sliding element has pores which have an open pore size of ≥7.5% by volume, and wherein the particle size of the graphite particles used as a starting material for the sliding elements is between 3 μm and 15 μm. 1. Sliding element , in particular for a stretching installation and/or conveyor chain , comprising graphite or electrographite , whereinthe sliding element has pores, the open pore size being ≥7.5% by volume, andthe particle size of the graphite particles used as a starting material for the sliding elements is between 3 μm and 15 μm.2. Sliding element according to claim 1 , wherein the open pore size is at least ≥8% by volume or preferably ≥9% by volume claim 1 , 10% by volume claim 1 , 11% by volume claim 1 , 12% by volume claim 1 , 13% by volume claim 1 , 14% by volume or ≥15% by volume.3. Sliding element according to claim 1 , wherein the open pore size of the sliding element is ≤20% by volume claim 1 , in particular ≤18% by volume claim 1 , 16% by volume claim 1 , 15% by volume claim 1 , 14% by volume claim 1 , 13% by volume claim 1 , 12% by volume or in particular ≤11% by volume.4. Sliding element according to claim 1 , wherein the sliding element is impregnated with inorganic salts and/or inorganic salts are embedded in the sliding element.5. Sliding elements according to claim 1 , wherein the particle size of the graphite particles used as a starting material for the sliding elements is greater than or equal to 4 μm claim 1 , 5 μm claim 1 , 6 μm claim 1 , 7 μm claim 1 , 8 μm claim 1 , 9 μm or 10 μm claim 1 , or is less than 14 μm claim 1 , 13 μm claim 1 , 12 μm claim 1 , 11 μm claim 1 , 10 μm claim 1 , 9 μm claim 1 , 8 μm claim 1 , 7 μm claim 1 , 6 μm claim 1 , or is less than 5 μm.6. Sliding elements according to claim 1 , wherein the graphite particles used as a starting material for ...

Lateral guide rail for a transport system, in particular a stretching unit

An improved guide rail in particular for a transport device or stretching unit is distinguished inter alia by the following features—the cooling device comprises at least one cooling duct which extends in a zigzag shape inside the guide rail and which is formed by connected transverse bores, and/or—the guide rail comprises at least two half-shells or halves between which a flexible tube is arranged in a sandwich-like manner to form at least one cooling duct, and/or—at least one cooling duct is arranged outside the guide rail so as to extend parallel thereto, and, in the longitudinal direction of the guide rail, in each case bores extending transversely thereto are made, into which bores outwardly projecting heat lines and/or heat pipes are inserted.

THERMOPLASTIC FILMS AND BAGS WITH COMPLEX STRETCH PATTERNS AND METHODS OF MAKING THE SAME

A thermoplastic film which exhibits elastic-like behavior along at least one axis when stretched or elongated and then released. The thermoplastic film comprises a plurality of raised rib-like elements extending in a direction perpendicular to a main surface of the thermoplastic film. The thermoplastic film further includes a plurality of web areas positioned about the plurality of raised rib-like elements. The plurality of raised rib-like elements and plurality of web areas are arranged in a complex pattern. The complex pattern provides visual and tactile cues as the films are stretched or elongated. The complex pattern can cause the thermoplastic film to have a complex stretch profile. 1. A thermoplastic film with one or more strainable networks formed by a structural elastic like process , the thermoplastic film comprising:a plurality of raised rib-like elements extending in a direction perpendicular to a main surface of the thermoplastic film;a plurality of web areas positioned about the plurality of raised rib-like elements; andwherein the plurality of raised rib-like elements and the plurality of web areas are sized and positioned such that, when subjected to an applied load, a stretch profile of the thermoplastic film has a complex shape.2. The thermoplastic film of claim 1 , wherein the plurality of raised rib-like elements and the plurality of web areas are sized and positioned such that claim 1 , when subjected to the applied load claim 1 , the stretch profile of the thermoplastic film includes multiple inflection points.3. The thermoplastic film of claim 2 , wherein the plurality of raised rib-like elements and the plurality of web areas are sized and positioned such that claim 2 , when subjected to the applied load claim 2 , the stretch profile of the thermoplastic film includes two inflection points.4. The thermoplastic film of claim 2 , wherein the plurality of raised rib-like elements and the plurality of web areas are sized and positioned such that ...

OPTICALLY ANISOTROPIC POLYMER THIN FILMS

A polymer layer includes a first in-plane refractive index extending along a first direction of the polymer layer, a second in-plane refractive index less than the first in-plane refractive index extending along a second direction of the polymer layer orthogonal to the first direction, a third refractive index along a direction orthogonal to both the first direction and the second direction, and a plurality of wrinkles extending along a surface of the polymer layer, where a difference between the first in-plane refractive index and the second in-plane refractive index is at least approximately 0.05, and the third refractive index is greater than the second in-plane refractive index. 1. A polymer layer comprising:a first in-plane refractive index extending along a first direction of the polymer layer;a second in-plane refractive index less than the first in-plane refractive index extending along a second direction of the polymer layer orthogonal to the first direction;a third refractive index along a direction orthogonal to both the first direction and the second direction; anda plurality of wrinkles extending along a surface of the polymer layer, wherein a difference between the first in-plane refractive index and the second in-plane refractive index is at least approximately 0.05, and the third refractive index is greater than the second in-plane refractive index.2. The polymer layer of claim 1 , wherein the third refractive index is less than the first in-plane refractive index.3. The polymer layer of claim 1 , having a length of at least approximately 5 cm and a width of at least approximately 5 cm.4. The polymer layer of claim 1 , wherein the wrinkles have an average height of at least approximately 10 micrometers.5. The polymer layer of claim 1 , wherein the wrinkles have an aspect ratio (a) of at least approximately 3.6. The polymer layer of claim 1 , wherein at least a portion of wrinkles extend along the second direction.7. A reflective polarizer comprising ...

Fluororesin porous film and preparation method thereof

The present invention relates to a fluororesin porous film in which, based on the total thickness of the fluororesin porous film composed of a single 5 μm to 300 μm layer, a thickness ratio of nodes distributed on any one surface shows a difference of 5% or more compared to a thickness ratio of nodes distributed on the other surface forming the remaining part, a method for preparing the same, and a vent filter including the porous film.

MULTILAYER FILM FOR LABEL AND A METHOD FOR PROVIDING SUCH

The invention relates to providing a method for obtaining a multilayer film for thermally inducible shrink labels, products thereof and use of such products. 1. A multilayer film for labeling comprising a first skin layer , a second skin layer and a core layer between the first skin layer and the second skin layer , wherein the core layer comprises copolymer of ethylene and butyl acrylate , and wherein at least one of the first skin layer and the second skin layer comprises propylene terpolymer.2. (canceled)3. The multilayer film according to claim 1 , wherein the propylene terpolymer comprises more than one alpha-olefin co-monomer claim 1 , for example ethylene claim 1 , 1-butene claim 1 , 1-hexene or 1-octene or claim 1 , wherein the propylene terpolymer comprises one of:a terpolymer of ethylene, propylene and 1-butene,a terpolymer of ethylene, propylene and 1-hexene, anda terpolymer of ethylene, propylene and 1-octene.4. (canceled)5. The multilayer film according to claim 1 , wherein the core layer comprises copolymer of ethylene and butyl acrylate in the range of 10 to 90% by weight claim 1 , preferably in the range of 15 to 85% by weight claim 1 , most preferably in the range of 20 to 80% by weight.6. The multilayer film according to claim 1 , wherein the core layer comprises propylene terpolymer in the range of 10 to 90% by weight claim 1 , preferably in the range of 15 to 85% by weight claim 1 , most preferably in the range of 20 to 80% by weight.7. The multilayer film according to claim 1 , wherein the core layer comprises propylene terpolymer.8. The multilayer film according to claim 1 , wherein the copolymer of ethylene and butyl acrylate is a block or random copolymer claim 1 , comprising a n-butyl acrylate content in the range of 5% to 30% by weight.9. The multilayer film according to claim 1 , wherein the first skin layer and/or the second skin layer comprises propylene terpolymer equal to or more than 95% by weight claim 1 , preferably equal to or more ...

Improved apparatus and method for stretching and repitching elastic members

The current invention concerns a method and apparatus for stretching and repitching an elastic member for attachment to a moving substrate, the elastic member being stretchable in at least a longitudinal direction and said elastic member in an essential non-stretched condition comprising an initial length along said longitudinal direction, the method comprising the steps of: (1) providing the elastic member in essentially non-stretched condition to a set of repitching members with an initial supply pitch, said set of repitching members comprising at least a first repitching member and a second repitching member, and optionally one or more repitching members arranged between said first and said second repitching member; (2) receiving said elastic members arranged in non-stretched condition between said set of repitching members, whereby the distance between the first and the second repitching member corresponds to the initial length of the elastic member; (3) moving at least said first and said second repitching members following trajectories diverging from each other, thereby stretching said elastic members arranged between the repitching members to an application length which is longer than the initial length and which corresponds to the length of said elastic member in elastically stretched condition, whereby said repitching members are moved with selectively variable velocity when transferring said elastic members to selectively vary the application pitch of said elastic member in stretched condition on said substrate, the variation of the speed of said repitching members determining the application pitch of said elastic member in stretched condition on said substrate, characterized in that during step (3), said set of elastic members are rotated around a common rotation axis while the elastic member is being stretched from the initial length to the application length. Additionally, the invention concerns a method and apparatus for stretching and repitching an ...

PROCESS FOR MAKING A MICRO-TEXTURED WEB

Processes for making micro-textured webs are disclosed. The present process includes the steps of providing a precursor web; providing a first pair of mated forming members including a first forming member and a second forming member forming a first deformation zone therebetween; moving the precursor web through the first deformation zone forming a first plurality of structures; providing a second pair of mated forming members including a third forming member and a fourth forming member forming a second deformation zone therebetween; moving the precursor web through the second deformation zone forming a second plurality of structures, and wherein the first plurality of structures is different than the second plurality of structures. 2. The process of claim 1 , wherein the first plurality of structures protrude from a first surface of the precursor web.3. The process of claim 2 , wherein the second plurality of structures protrude from a second surface of the precursor web claim 2 , wherein the second surface is opposite the first surface.4. The process of claim 1 , wherein the first forming member and the second forming member comprise a first plurality of forming elements and a second plurality of forming elements claim 1 , wherein the first plurality of forming elements and the second plurality of forming elements is different.5. The process of claim 1 , wherein the third forming member and the fourth forming member comprise a first plurality of forming elements and a second plurality of forming elements claim 1 , wherein the first plurality of forming elements and the second plurality of forming elements is different.6. The process of claim 1 , wherein the precursor web is a film.7. The process of claim 1 , wherein the precursor web is a nonwoven.8. The process of claim 1 , wherein the precursor web is a laminate comprising nonwoven and film.9. The process of claim 1 , wherein the precursor web is a laminate comprising a first nonwoven and a second nonwoven.10. ...

METHOD AND APPARATUS FOR PRODUCING A STRETCHABLE SHEET

In a method of producing a stretchable sheet using a pair of gear rolls each having a plurality of teeth arranged on a circumference thereof, a raw sheet is drawn by passing the raw sheet through a gap between the pair of gear rolls. The raw sheet contains a plurality of types of fibers, and has a plurality of recessed sections formed by pressing. The recessed sections are formed collinearly at least along the drawing direction at a predetermined formation pitch in the drawing direction. An arrangement pitch of the teeth in the drawing direction is greater than the formation pitch and smaller than twice the formation pitch. The present invention is a divisional of U.S. patent application Ser. No. 13/577,030 filed Oct. 22, 2012 which is a National Phase of International Application No. PCT/JP2011/054738, filed Mar. 2, 2011, and claims priority from Japanese Application Number 2010-053603, filed Mar. 10, 2010. The disclosures of all of the above-listed prior-filed applications are hereby incorporated by reference herein in their entirety.The present invention relates to a method and an apparatus for producing a stretchable sheet.In a disposable diaper, which is an example of a sanitary article, a stretchable sheet may be used as a fastening member (for example, portions of a front body piece or a rear body piece around a waist) that is fastened around the torso of a wearer. This stretchable sheet is produced by, for example, performing a drawing process on a raw sheet including a nonwoven fabric and the like. A method called “gear drawing” is known as an example of the drawing process (e.g., see PTL 1).[PTL 1] JP-A-2009-228145This “gear drawing” is a method in which a raw sheet is drawn by a pair of upper and lower gear rolls having teeth formed on outer circumferential faces thereof at a predetermined arrangement pitch Pt in a circumferential direction. More specifically, the raw sheet is passed through a gap between the pair of rotating upper and lower gear rolls, ...

APPARATUS AND METHOD FOR STRETCHING AND REPITCHING ELASTIC MEMBERS

The current invention concerns a method and apparatus for stretching and repitching an elastic member for attachment to a moving substrate, the elastic member being stretchable in at least a longitudinal direction and said elastic member in an essential non-stretched condition comprising an initial length along said longitudinal direction, the method comprising the steps of: (1) providing the elastic member in essentially non-stretched condition to a set of repitching members with an initial supply pitch, said set of repitching members comprising at least a first repitching member and a second repitching member, and optionally one or more repitching members arranged between said first and said second repitching member; (2) receiving said elastic members arranged in non-stretched condition between said set of repitching members, whereby the distance between the first and the second repitching member corresponds to the initial length of the elastic member; (3) moving at least said first and said second repitching members following trajectories diverging from each other, thereby stretching said elastic members arranged between the repitching members to an application length which is longer than the initial length and which corresponds to the length of said elastic member in elastically stretched condition, whereby said repitching members are moved with selectively variable velocity when transferring said elastic members to selectively vary the application pitch of said elastic member in stretched condition on said substrate, the variation of the speed of said repitching members determining the application pitch of said elastic member in stretched condition on said substrate, characterized in that during step (3), said set of elastic members are rotated around a common rotation axis while the elastic member is being stretched from the initial length to the application length. 1. Method for stretching and repitching an elastic member for attachment to a moving substrate ...

RESIN FILM, BARRIER FILM, AND ELECTRICALLY CONDUCTIVE FILM, AND PRODUCTION METHODS THEREFOR

A resin film formed of a resin containing a polymer containing an alicyclic structure and having crystallizability, wherein a crystallization degree of the polymer is 30% or more, and a thickness variation Tv of the resin film represented by the following formula (1) is 5% or less. The formula (1) is Tv [%]=[(Tmax−Tmin)/Tave]×100. In the formula (1), Tmax is a maximum value of the thickness of the resin film, Tmin is a minimum value of the thickness of the resin film, and Tave is an average value of the thickness of the resin film). 2. The resin film according to claim 1 , whereinthe polymer containing an alicyclic structure is a hydrogenated product of a ring-opening polymer of dicyclopentadiene.3. The resin film according to claim 1 , whereinan internal haze of the resin film is 3% or less.4. The resin film according to claim 1 , whereinthe resin film is an optical film.5. An electroconductive film comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the resin film according to , and'}an electroconductive layer disposed on the resin film.6. A barrier film comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the resin film according to , and'}a barrier layer disposed on the resin film.7. A method for producing the resin film according to claim 1 , comprising:{'b': 1', '2, 'sub': 'ph', 'a pre-heating step of pre-heating a first film formed of a resin containing a polymer containing an alicyclic structure and having crystallizability at a pre-heating temperature Tph falling within a range of a first temperature T or higher and a second temperature T or lower for a pre-heating time tin a state where at least two edges of the first film are held to obtain a second film;'}{'b': 1', '2, 'a stretching step of subjecting the second film to a stretching treatment at a stretching temperature Tst falling within a range of the first temperature T or higher and the second temperature T or lower to obtain a third film; and'}{'b': '3', 'a thermal setting step of ...

ORIENTED FILMS AND SHRINK FILMS COMPRISING POLYESTERS WHICH COMPRISE TETRAMETHYLCYCLOBUTANEDIOL AND ETHYLENE GLYCOL

This invention relates to an oriented film or a shrink film comprising a polyester composition comprising: (1) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: (i) about 90 to about 100 mole % of terephthalic acid residues; (ii) about 0 to about 10 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprising: (i) about 10 to about 29 mole % 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) about 71 to about 90 mole % ethylene glycol residues; and (iii) optionally, diethylene glycol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %; wherein the inherent viscosity of the polyester is from 0.50 to 0.8 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.25 g/50 ml at 25° C.; wherein the polyester has a Tg of from 80° C. to 105° C. or of from 80° C. to 100° C. as determined using a TA DSC 2920 from Thermal Analyst Instrument at a scan rate of 20° C./min.; and (2) optionally, wherein the polyester composition comprises at least one plasticizer. 3. The film of wherein said polyester comprises about 15 to about 28 mole % 2 claim 2 ,2 claim 2 ,4 claim 2 ,4-tetramethyl-1 claim 2 ,3-cyclobutanediol residues and 72 to 85 mole % ethylene glycol residues.4. The film of wherein said at least one polyester comprises a catalyst/stabilizer component which comprises: (i) titanium atoms in the range of 10-50 ppm based on total polymer weight claim 1 , and (ii) phosphorus atoms in the range of 10-200 ppm based on total polymer weight.5. The film of wherein said at least one polyester comprises manganese atoms in the range of 10-100 ppm based on total polymer weight claim 4 ,6. The film of claim 4 , wherein the catalyst/stabilizer component comprises tin atoms in the range of 0-5 ppm based on total polymer weight.7. The film of or claim 4 , ...

HEAT-SHRINKABLE POLYESTER-BASED FILM

The invention provides a heat-shrinkable polyester-based film, where the heat-shrinkage ratio in the width direction is high and the irregularity of thickness is small. The heat-shrinkable polyester-based film of the present invention contains 90 mol % or more of ethylene terephthalate unit based on 100 mol % of whole ester unit, wherein, the heat-shrinkable polyester-based film satisfies the requirements: (1) heat-shrinkage ratio in a width direction measured by shrinking the film for 10 seconds in 90° C. hot water is 50%-75%, (2) heat-shrinkage ratio in a longitudinal direction measured by shrinking the film for 10 seconds in 90° C. hot water is −6% or more and 14% or less, (3) heat-shrinkage ratio in the longitudinal direction measured by shrinking the film for 10 seconds in 70° C. hot water is -6% or more and 6% or less, and (4) irregularity of thickness in the width direction is 1%-20%. 1. A heat-shrinkable polyester-based film comprising ethylene terephthalate unit by 90 mol % or more out of whole ester unit 100 mol % ,wherein, the heat-shrinkable polyester-based film satisfies the following requirements (1) to (4):(1) heat-shrinkage ratio in a width direction measured by shrinking the film for 10 seconds in 90° C. hot water is 50% or more and 75% or less,(2) heat-shrinkage ratio in a longitudinal direction measured by shrinking the film for 10 seconds in 90° C. hot water is −6% or more and 14% or less,(3) heat-shrinkage ratio in the longitudinal direction measured by shrinking the film for 10 seconds in 70° C. hot water is −6% or more and 6% or less, and(4) irregularity of thickness in the width direction is 1% or more and 20% or less.2. The heat-shrinkable polyester-based film according to claim 1 , further satisfying the following requirement (5):(5) maximum heat shrinkage stress in the width direction measured by shrinking the film for 30 seconds in 90° C. hot air is 4 MPa or more and 13 MPa or less.3. The heat-shrinkable polyester-based film according to ...

Processes and apparatus for making transversely drawn films with substantially uniaxial character

A roll of multilayer optical film is described. The roll includes a substantially uniaxially-oriented multilayer optical film, where at least one layer of the multilayer optical film has indices of refraction in a length direction and a thickness direction that are substantially the same, but substantially different from an index of refraction in a width direction.

Method of separating strands on a stretching surface

A method of increasing a width of a polymeric netting is disclosed. The method includes providing a polymeric netting having a length in a machine direction and running the polymeric netting in the machine direction onto a stretchable surface. The polymeric netting is in contact with the stretchable surface for a path length in the machine direction, and for at least a portion of the path length, the stretchable surface is stretching in the cross-machine direction. The traction between the polymeric netting and the stretchable surface during the stretching increases the width of at least a portion of the polymeric netting in the cross-machine direction.

Method For Making An Apertured Web

A method for making apertures in a precursor web using a forming apparatus is described herein. The precursor web comprises a film layer and a nonwoven layer having molecular orientation and the forming apparatus comprises an arrangement of teeth. The forming apparatus heats and stretches the precursor web forming apertures therein. 1. A method for making apertures in a web , the method comprising ,providing a laminate or composite precursor web material having a machine direction and a cross machine direction, the web having a predominant molecular orientation relative to the machine direction and the cross machine direction, the laminate or composite precursor web comprising a film layer and a nonwoven layer;providing a forming apparatus comprising a first member and a second member, wherein the first member comprises a mating member, and the second member comprises teeth being tapered from a base to a tip, the teeth being joined to the second member at the base, the base of each tooth having a cross-sectional length dimension greater than a cross-sectional width dimension, wherein the first member and/or second member are heated to above room temperature; andmoving the laminate or composite precursor web material through the intermeshing members;heating and stretching the laminate or composite precursor web; andforming apertures in the laminate or composite web as the teeth on the second member engage the mating member.2. The method of wherein the forming apparatus comprises a pair of counter-rotating rollers claim 1 , wherein the first member comprises a first roller and the second member comprises a second roller with the teeth arranged in rows claim 1 , each row extending at least partially about a circumference of the second roller claim 1 , wherein the precursor web is moved through a nip formed between the counter-rotating rollers forming apertures in the precursor web.3. The method of wherein the first roller comprises circumferentially-extending ridges ...

OPTICAL BODIES INCLUDING STRIPPABLE BOUNDARY LAYERS

The present disclosure is directed to optical bodies including a first optical film, a second optical film and one or more strippable boundary layers disposed between the first and second optical films. Each major surface of a strippable boundary layer may be disposed adjacent to an optical film or another strippable boundary layer. At least one of the first and second optical films may include a reflective polarizer. The present disclosure is also directed to methods of processing such optical bodies. 1. An optical body comprising a first optical film , a second optical film and one or more strippable boundary layers disposed between the first and second optical films such that each major surface of a strippable boundary layer is attached to an optical film or another strippable boundary layer , wherein at least one of the first and second optical films comprises a reflective polarizer , wherein the reflective polarizer comprises at least one material with indices of refraction in a length direction and a thickness direction that are substantially the same but substantially different from an index of refraction in a width direction.2. An optical body of claim 1 , wherein the reflective polarizer comprises at least one material with indices of refraction in a length direction and a thickness direction that differ by no more than 0.08.3. An optical body of claim 1 , wherein the reflective polarizer comprises at least one material with indices of refraction in a length direction and a thickness direction that differ by no more than 0.04.4. An optical body of claim 1 , wherein the reflective polarizer comprises at least one material with indices of refraction in a length direction and a thickness direction that differ by no more than 0.02.5. The optical body of claim 2 , wherein the at least one material has an in-plane birefringence of at least 0.1.6. The optical body of claim 1 , further comprising a third optical film and at least one additional strippable boundary ...

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. 132-. (canceled)33. An article , comprising:a nonwoven substrate; anda microporous breathable film supported by the nonwoven substrate, the microporous breathable film comprising a first polymer and an amount of a second polymer, wherein the second polymer has a polymer backbone similar to that of the first polymer such that at least about 5% by weight of the amount of the second polymer is blended with the first polymer;{'sup': 2', '2, 'wherein the microporous breathable film comprises a pore-forming filler and the laminate has a MVTR from 35 g/m/day to 140 g/m/day according to ASTM E96-A and measured at 23° C. and 50 RH %.'}34. The article of claim 33 , wherein the first polymer comprises a polyolefin and the second polymer comprises a polycycloolefin claim 33 , a polymethylpentene claim 33 , or a copolymer thereof.35. The article of claim 34 , wherein the second polymer comprises a poly(cycloolefin-co-olefin).36. The article of claim 34 , wherein the second polymer comprises a poly(norbornene-co-ethylene) or a copolymer formed from ethylene and norbornene substituted with a substituent.37. The article of claim 34 , wherein the first polymer comprises a polyethylene or a polypropylene.38. The article of claim 37 , wherein the film further comprises an elastomer.39. The article of claim 33 , wherein the nonwoven substrate comprises randomly disposed polymeric fibers claim 33 , at least a portion of the fibers being bonded to one another.40. The article of claim 33 , wherein the article is embossed.41. The article of claim 33 , wherein the pore-forming filler comprises a plurality of particles.42. The article of ...

Method of producing retardation film

The present invention provides a method of producing a retardation film excellent in stretchability and capable of achieving high alignment property. The method of producing a retardation film of the present invention is the method in which a lengthy resin film is stretched in a widthwise direction thereof while being conveyed in a lengthwise direction thereof to provide a retardation film satisfying a relationship of 0.70<Re(450)/Re(550)<0.97, including: a preheating step of heating the resin film to a temperature T1; a preliminary stretching step of stretching the resin film after the preheating while cooling the film to a temperature T2; and a main stretching step.

EXPANDER DEVICE, POROUS FILM PRODUCING APPARATUS, AND POROUS FILM PRODUCING METHOD

To prevent wear powder from adhering to a film, an expander roller () is used that extends in the width direction of a porous film (F) and that is configured to apply a tension to the porous film (F) in the width direction, and foreign matter adhering to the expander roller () is removed from a portion of the outer peripheral surface of the expander roller () at which portion the expander roller () is in no contact with the porous film (F). 1. An expander device , comprising:an expander roller extending in a width direction of a film transferred, the expander roller being configured to apply a tension to the film in the width direction; anda foreign matter removing section configured to remove foreign matter adhering to the expander roller from a portion of an outer peripheral surface of the expander roller at which portion the expander roller is in no contact with the film.2. The expander device according to claim 1 , wherein:The expander device may be configured such that the foreign matter removing section is an adhesive section; andthe adhesive section removes the foreign matter by causing the foreign matter to adhere to a surface of the adhesive section.3. The expander device according to claim 2 , wherein:the expander roller is a curved expander roller having a curved axis; andthe adhesive section is an adhesive roller that has an axis curved in correspondence with a curvature of the axis of the expander roller and that is in contact with the expander roller in a longitudinal direction of the expander roller.4. The expander device according to claim 1 , wherein:the foreign matter removing section is a sucking section having a sucking port; andthe sucking section removes the foreign matter by sucking the foreign matter through the sucking port.5. The expander device according to claim 4 , wherein:the expander roller is a curved expander roller having a curved axis; andthe sucking port is curved in correspondence with a curvature of the axis of the expander ...

METHODS OF PRODUCING AND USING MICROPOROUS MEMBRANES

A method of producing microporous membranes includes stretching a multi-layer layer extrudate having first and second layers, the first layer including a first polyolefin and a first diluent, and the second layer including a second polyolefin and a second diluent, the second polyolefin including polypropylene in an amount of 1.0 wt. % to 40.0 wt. %, the polypropylene having an Mw>0.9×10and a ΔHm≧100.0 J/g; removing at least a portion of the diluents to produce a dried membrane having a first length and a first width; stretching the membrane by a first magnification factor of 1.1 to 1.5 and stretching the membrane by a second magnification factor of 1.1 to 1.3; and reducing the width. 1. A method of producing a microporous membrane comprising:{'sup': '6', '(a) stretching a multi-layer layer extrudate in at least one of MD or TD, the extrudate comprising at least first and second layers, the first layer comprising a first polyolefin and at least a first diluent, and the second layer comprising a second polyolefin and at least a second diluent, the second polyolefin comprising polypropylene in an amount in the range of from 1.0 wt. % to 40.0 wt. % based on the weight of the second polyolefin, the polypropylene having an Mw>0.9×10and a ΔHm≧100.0 J/g;'}(b) removing at least a portion of the first and second diluents from stretched extrudate to produce a dried membrane having a first length along MD and a first width along TD;(c) stretching the membrane in MD from the first length to a second length larger than the first length by a first magnification factor in the range of from about 1.1 to about 1.5 and stretching the membrane in TD from the first width to a second width that is larger than the first width by a second magnification factor in the range of from about 1.1 to about 1.3; and then(d) reducing the second width to a third width, the third width being in the range of from the first width to about 1.1 times larger than the first width.2. The method of claim 1 , ...

Base structure, device and method for transporting films

A base structure, device and method are provided for transporting film in a transport direction, in particular, for a stretching plant, where at least one upper moving rope and one lower moving rope are guided and the one upper guided rope and the at least one lower guided rope clamp and entrain the film at its side edge at least in places.

Stretching device to stretch a film made ofsynthetic material at least in the transverse direction

This stretching device comprises a guide rail, first clamps of a first type and second clamps of a second type each intended to grip the same longitudinal edge of a film and alternately disposed along the guide rail, and an endless chain connected to the first and second clamps and configured to drive the first and second clamps along the guide rail, the endless chain being deformable between a first state and a second state in which the first and second clamps are respectively disposed close to or distant from each other. Each first clamp and each second clamp respectively include a primary guide roller and a secondary guide roller configured to cooperate with the guide rail, the first and second clamps being configured such that when the endless chain is in the first state, the primary guide roller of each first clamp and the secondary guide roller of each second clamp adjacent to said first clamp overlap at least partially.

Thermoplastic films with visually-distinct stretched regions and methods for making the same

Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent.

RESIN FILM, CONDUCTIVE FILM AND METHOD FOR PRODUCING THESE FILMS

A resin film including a crystallizable polymer, wherein an in-plane retardation Re of the resin film is less than 5 nm, a thickness-direction retardation Rth of the resin film is less than 25 nm, and a haze HZ of the resin film is less than 3.0%. 1. A resin film comprising a crystallizable polymer , whereinan in-plane retardation Re of the resin film is less than 5 nm,a thickness-direction retardation Rth of the resin film is less than 25 nm, anda haze HZ of the resin film is less than 3.0%.2. The resin film according to claim 1 , whereinthe crystallizable polymer is an alicyclic structure-containing polymer.3. The resin film according to claim 2 , whereinthe alicyclic structure-containing polymer is a hydrogenated product of a ring-opening polymer of dicyclopentadiene.4. The resin film according to claim 1 , whereina heat resistance temperature of the resin film is 150° C. or higher.5. The resin film according to claim 1 , whereinthe resin film is an optical film.6. An electroconductive film comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the resin film according to ; and'}an electroconductive layer disposed on the resin film.7. A method for producing the resin film according to claim 1 ,a melting point of the crystallizable polymer being represented by Mp and a glass transition temperature of the crystallizable polymer being represented by Tg, the method for producing the resin comprising:a step (I) of preparing a long-length pre-stretch film containing the crystallizable polymer;a step (V) of pre-heating the pre-stretch film for a pre-heating time of 1 second or more and 60 seconds or less;a step (II) of stretching the pre-stretch film at a stretching temperature of Tg−50° C. to Tg+50° C. in a width direction to obtain a stretched film; anda step (III) of adjusting a temperature of the stretched film to a crystallization temperature of Mp−120° C. to Mp for a crystallization time of 30 seconds or less while keeping a state where two or more edges of ...

FILMS AND BAGS WITH BILLOW POCKETS FOR CAPTURING LIQUIDS

A multiple-ply thermoplastic film which exhibits elastic-like behavior along at least one axis when stretched or elongated and then released. The thermoplastic film comprises a plurality of raised rib-like elements extending in a direction perpendicular to a main surface of the thermoplastic film. The thermoplastic film further includes a plurality of web areas positioned about the plurality of raised rib-like elements. The plurality of raised rib-like elements and plurality of web areas are arranged in a complex pattern. The complex pattern, when stretched or elongated and then released, can cause areas of billowing and delamination between plies of the multiple-ply thermoplastic film. The resulting billowed and delaminated areas form billow pockets for capturing liquids that can capture liquids when one of the plies is punctured. 1. A multi-ply thermoplastic film with one or more strainable networks formed by a structural elastic like process , the multi-ply thermoplastic film comprising:a laminate comprising a first thermoplastic film layer lightly-bonded to a second thermoplastic film layer;a plurality of raised rib-like elements formed in the first and second thermoplastic film layers;a plurality of land areas positioned about the plurality of raised rib-like elements, wherein the plurality of land areas extend in a first direction; andwherein the plurality of raised rib-like elements and the plurality of land areas are sized and positioned such that, when subjected to an applied force in a direction parallel to the first direction, the first thermoplastic film layer and the second thermoplastic film layer delaminate between raised rib-like elements and billow to create billow pockets for capturing liquids for capturing liquid.2. The multi-ply thermoplastic film as recited in claim 1 , wherein the billow pockets for capturing liquids are fluidly connected.3. The multi-ply thermoplastic film of claim 1 , further comprising one or more of a tackifying adjuvant or ...

Polyolefin-based resin composition and polyolefin-based resin film

Provided are a polyolefin-based resin composition having excellent antistatic performance, and a polyolefin-based resin film formed using the composition. More specifically, a polyolefin-based resin composition comprising a polyolefin-based resin, a polyalkylene carbonate resin, and a metal salt having a melting point higher than 100° C. is provided. Also provided is a polyolefin-based resin film formed using the polyolefin-based resin composition, the film being stretched at least uniaxially.

FILMS AND BAGS HAVING LOW-FORCE EXTENSION PATTERNS

A thermoplastic film which exhibits elastic-like behavior along at least one axis when stretched or elongated and then released. The thermoplastic film comprises a plurality of raised rib-like elements extending in a direction perpendicular to a main surface of the thermoplastic film. The thermoplastic film further includes a plurality of web areas positioned about the plurality of raised rib-like elements. The plurality of raised rib-like elements and plurality of web areas are arranged in a complex pattern. The complex pattern provides visual and tactile cues as the films are stretched or elongated. The complex pattern can cause the thermoplastic film to have a low force extension. 1. A thermoplastic film with one or more strainable networks formed by a structural elastic like process , the thermoplastic film comprising:a plurality of raised rib-like elements;a plurality of land areas positioned about the plurality of raised rib-like elements, wherein the plurality of land areas extend in a first direction; andwherein the plurality of raised rib-like elements and the plurality of land areas are sized and positioned such that, when subjected to the applied force in a direction parallel to the first direction, the thermoplastic film provides a low force extension.2. The thermoplastic film as recited in claim 1 , wherein the thermoplastic film consists of land areas extending in the first direction.3. The thermoplastic film as recited in claim 1 , further comprising a second plurality of land areas extending in a second direction claim 1 , the second direction being non-parallel to the first direction.4. The thermoplastic film as recited in claim 3 , wherein at least fifty percent of the combined land areas of the first and second plurality of land areas extend in the first direction.5. The thermoplastic film as recited in claim 1 , wherein the low force extension comprises between 0.04 and 0.12 inches per repeat unit when subjected to a tensile stress equal to ...

HEAT SETTING OPTICAL FILMS

A method of making an optical film includes providing a film, substantially uniaxially orienting the film, and heat setting the oriented film. The film includes a polymeric material capable of developing birefringence. 1. A multilayer reflective polarizer comprising a plurality of polyester-based polymeric layers, the film defining in-plane orthogonal x- and y-directions and a z-direction orthogonal to the x- and y-directions, the reflective polarizer stretched along the x-direction, each polyester-based polymeric layer having refractive indices nx, ny and nz along the respective x-, y- and z-directions, the reflective polarizer heat set at a temperature above a glass transition temperature and below a melting point of each of the polyester-based polymeric layers, wherein for at least one polyester-based polymeric layer, the heat setting results in a decrease in nx and |ny−nz|/|nx−nu|, and an increase in ny and nz, wherein nu is an average of ny and nz. The present disclosure relates to heat setting processes for making optical films, as well as films made by these processes.Typically, an optical film that functions as a linear polarizer includes an in-plane block state (“x” direction) and in-plane pass state (“y” direction) for light normally incident to the plane of the film. Thus, light normally incident with a linear polarization state aligned with the x direction is maximally blocked (i.e. minimally transmitted) and light normally incident with a linear polarization state aligned with the y direction is minimally blocked (i.e. maximally transmitted). Light incident off-normal has intermediate levels of transmittance as a function of its alignment relative to the film. The axis normal to the plane of the film is referred to as the “z” direction.The present disclosure describes a method of making an optical film that includes providing a film, substantially uniaxially orienting the film, and heat setting the oriented film. The film includes a polymeric material ...

FILM MANUFACTURING APPARATUS AND METHOD THEREOF

A film manufacturing apparatus includes: a material supply unit which supplies an intermediate film; a pre-heating unit which pre-heats the intermediate film supplied from the material supply unit; a stretching unit which stretches and performs a first heat-treatment to the intermediate film supplied through the pre-heating unit; a heating treatment unit which performs a second heat-treatment to the stretched intermediate film supplied from the stretching unit; a clipping device which clips lateral ends of the intermediate film to transfer the intermediate film and applies a transverse directional tension to the intermediate film; and a cutting device disposed in at least one of the stretching unit and the heat-treatment unit, wherein the cutting device separates the lateral ends from a center portion of the intermediate film by cutting the intermediate film. 1. A film manufacturing apparatus comprising:a material supply unit which supplies an intermediate film;a pre-heating unit which pre-heats the intermediate film supplied from the material supply unit;a stretching unit which stretches and performs a first heat-treatment to the intermediate film supplied through the pre-heating unit;a heating treatment unit which performs a second heat-treatment to the stretched intermediate film supplied from the stretching unit;a clipping device which clips lateral ends of the intermediate film to transfer the intermediate film and applies a transverse directional tension with respect to a transfer direction of the intermediate film, to the intermediate film; anda cutting device disposed in at least one of the stretching unit and the heat-treatment unit, wherein the cutting device separates the lateral ends from a center portion of the intermediate film between the lateral ends by cutting the intermediate film.2. The film manufacturing apparatus of claim 1 , further comprising:a control roll which controls a transfer directional tension of the intermediate film.3. The film ...

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.

APPARATUS AND METHOD FOR STRETCHING AND TAKING-AWAY POLYMER FILMS

A film () processing apparatus () including a film stretching device () and a take-away device (). The take-away device receives the film after the stretching device and transports the film along a conveying region in a direction of transport (X). The take-away device includes opposing, first and second conveyor assemblies. The first conveyor assembly has a continuous belt driving a plurality of discrete pads (). Each pad forms a contact face () extending between leading () and trailing edges (). The pads are configured and arranged such that the trailing edge () of a first pad () overlaps the leading edge () of an immediately adjacent second pad () as the first and second pads traverse the conveying region. The overlap is characterised by a line () perpendicular to the direction of transport passing at any given moment through the first and second pads. A shape of the contact face can define a major central axis that is non-perpendicular and non-parallel with the direction of transport. The invention also relates to a method of processing a film using such an apparatus. 1. An apparatus for processing a film , the apparatus comprising:a stretching device for stretching a received film; anda take-away device that receives the film after the stretching device, the take-away device establishing an entrance side, an exit side, and a conveying region interfacing with and transporting the film in a direction of transport from the entrance side to the exit side; a continuous belt driven along a path of travel,', 'a plurality of discrete pads carried by the belt, each of the pads forming a contact face opposite the belt for contacting the film along the conveying region, the contact face extending between opposing, leading and trailing edges, the leading edge arranged downstream of the trailing edge relative to the path of travel,', 'wherein the plurality of pads includes a first a pad immediately adjacent a second pad;, 'wherein the take-away device includes a first track ...

DISCONTINUOUSLY LAMINATED FILM STRUCTURES WITH IMPROVED VISUAL CHARACTERISTICS

In one example embodiment, a laminated film includes an extruded ribbed first film portion that includes multiple ribs, where consecutive ribs are separated by webs that are integral with the ribs. The laminated film also includes an un-ribbed second film portion, and a region of discontinuous lamination between the first film portion and the second film portion. The region of discontinuous lamination includes multiple regions where the first and second film portions are bonded together, and multiple regions where the first and second film portions are not bonded together. 1. A method for producing a film , comprising:extruding a resin to form a precursor film having a plurality of ribs extending in a direction generally parallel to a machine direction, the precursor film including a stress- sensitive agent; andbonding the ribbed precursor film to an initially un-stretched and un-ribbed film so as to produce a discontinuously laminated film that includes a region of discontinuous lamination between the ribbed precursor film and the un-ribbed film, wherein the bonding process produces stress-indicating indicia in the discontinuously laminated film.2. The method as recited in claim 1 , wherein the bonding process comprises stretching the precursor film and the un-ribbed film using a cold forming process.3. The method as recited in claim 1 , wherein the bonding process comprises:separately folding the precursor film and the un-ribbed film;stacking the folded precursor film and the folded un-ribbed film;MD ring rolling the stacked films;inserting the folded un-ribbed film into the folded ribbed film to form a film book; andTD ring rolling the film book.4. The method as recited in claim 1 , wherein the bonding process comprises:separately folding the precursor film and the un-ribbed film;stacking the folded precursor film and the folded un-ribbed film;MD ring rolling the stacked films; andinserting the folded un-ribbed film into the folded ribbed film to form a film book ...

FASTENING ARTICLES AND METHODS OF MAKING THE SAME

The article includes a thermoplastic layer having opposing first and second side edges and a first surface bearing male fastening elements. The thermoplastic layer is plastically deformed and has a retardance profile having an average retardance along a line from the first edge to a location 500 micrometers from the first edge and a distance from the first edge where 75% of the average retardance is observed of at least 10 micrometers. In some cases, a distance between the first and second side edges is up to 50 millimeters. In some cases, the article is a fastening tab. The method includes providing a thermoplastic film having opposing first and second side edges, with a distance between the opposing side edges of up to 50 millimeters, and stretching the thermoplastic film to form the thermoplastic layer, which is plastically deformed. The first surface of the thermoplastic film bears male fastening elements. 1. An article comprising:a thermoplastic layer having opposing first and second side edges and first and second surfaces, the first surface of the thermoplastic layer bearing a plurality of male fastening elements, wherein the thermoplastic layer is plastically deformed and has a retardance profile comprising an average retardance along a line from the first side edge to a location 500 micrometers from the first side edge, wherein a distance from the first side edge where 75% of the average retardance is observed is at least 10 micrometers, and wherein a distance between the opposing first and second side edges is up to 50 millimeters.2. An article comprising:a substrate; anda thermoplastic layer joined to the substrate,the thermoplastic layer having opposing first and second side edges and first and second surfaces, the first surface of the thermoplastic layer bearing a plurality of male fastening elements, wherein the thermoplastic layer is plastically deformed and has a retardance profile comprising an average retardance along a line from the first side ...

BASE FILM, PREPARATION METHOD THEREOF, AND COVER WINDOW AND DISPLAY DEVICE COMPRISING SAME

Embodiments relate to a base film that is colorless, transparent, and excellent in mechanical properties and optical properties, particularly with low moisture permeability, a process for preparing the same, and a cover window and a display device comprising the same. The cover window comprises a base film comprising a polyamide-based polymer and having a moisture permeability of 300 g/m·day or less; and a functional layer.

Method for forming a breathable film

A film (12) which is a blend of a thermoplastic polymer and an inorganic filler is fed between a first roll (52) and a second roll (54). The first roll has a plurality of toothed regions (56) spaced apart by a plurality of grooved regions (58). The toothed regions include a plurality of teeth (57). The second roll has a plurality of teeth (61) which mesh with the teeth on the first roll. As the film is fed between the first roll and the second roll the portion of the film passing between the grooved regions on the first roll and the teeth on the second roll remains substantially planar forming first regions (64) in the film while the portion of the film passing between the teeth on the first roll and the teeth on the second roll are formed into second regions (66) having raised rib-like elements.

Zoned stretching of a web

An apparatus and methods for stretching one or more zones of an anisotropic web and anisotropic webs including one or more stretched zones is provided. Each of the stretched zones in the web is stretched in the cross-web direction, i.e., the direction transverse to the down-web direction. The stretching can be performed continuously as the web is advancing through the apparatus in the down-web direction. The method for stretching an extensible web in the cross direction generally is practiced on a substantially continuous, extensible anisotropic web. The cross web stretching occurs in an orientation zone established by an orientation unit. The orientation unit moves the web out of the plane of the web where the web is under tension, but without any side restraints. The web moves over the orientation unit where the degree of orientation is proportional to the cross direction displacement of a portion of the web by the orientation unit. The anisotropic web has a tensile strength in the downweb direction greater than the cross direction such that the web is preferentially displaced in the cross web direction by the orientation unit. This can be a downweb direction tensile strength at least 50 percent greater than the cross web direction.

Improved method and apparatus for incrementally stretching zero strain stretch laminate web in a non-uniform manner to impart a varying degree of elasticity thereto

A 'zero strain' stretch laminate web exhibiting a non-uniform degree of elasticity, as measured in the direction of elasticization at various points along an axis oriented substantially perpendicular to the direction of elasticization. Improved method and apparatus for non-uniformly stretching 'zero strain' stretch laminate webs to impart elasticity thereto in the direction of stretching, at least up to the point of initial stretching are also disclosed. The 'zero strain' stretch laminate material (1) is formed of at least two plies of material which are either intermittently or substantially continuously secured to one another along at least a portion of their coextensive surfaces while in a substantially untensioned ('zero strain') condition. One of the plies (4a) is stretchable and elastomeric, while the second ply (5, 6) is elongatable, but not necessarily elastomeric. The second ply will, upon stretching of the laminate, be at least to a degree permanently elongated so that, upon release of the applied tensile forces, it will not return to its original undistorted configuration. This results in z-direction bulking of the laminate web when the applied tension is released as well as elastic extensibility in the direction of initial stretching, at least up to the point of initial stretching. In a particularly preferred embodiment of the present invention, the mechanical stretching of said laminate web is carried out by passing said laminate web between at least one pair of meshing corrugated rolls (21, 25), the degree of meshing between said corrugated rolls being non-uniform about the periphery of sail rolls, whereby said laminate web is subjected to non-uniform incremental stretching as it passes therebetween to produce a varying degree of elasticity in the resultant web.

Process for producing polyolefin microporous breathable film

Polyolefin/filler breathable films may be produced by machine or transverse direction orientation using interdigitating grooved rollers. Biaxial orientation to similarly produce breathable films may be accomplished by the same method. By heating the rollers, the breathability of the film is increased without increasing the depth of engagement of the interdigitating rollers.

Process for producing polyolefin microporous breathable film

Polyolefin/filler breathable films may be produced by machine or transverse direction orientation using interdigitating grooved rollers. Biaxial orientation to similarly produce breathable films may be accomplished by the same method. By heating the rollers, the breathability of the film is increased without increasing the depth of engagement of the interdigitating rollers.

Process and device for treating web material

Structured oriented films for use in displays

Sheeting for use in a display with a backlight, comprising, in the following order from the backlight towards the viewer: a reflective polariser; and a birefringent brightness enhancement film.

Multi-layer vapor permeable article, substantially waterproof

Un artículo, que comprende: una película que comprende una poliolefina, una nanoarcilla, y un relleno de formación de poro, en el que el relleno de formación de poro comprende carbonato de calcio, en el que el artículo es una cubierta para casa o una cubierta para techo. An article, comprising: a film comprising a polyolefin, a nano-clay, and a pore-forming filler, in which the pore-forming filler comprises calcium carbonate, wherein the article is a house cover or a roof cover.

Vapor-permeable, substantially water-impermeable multilayer article

Apparatus and method for cross-directional stretching of polymeric film and other nonwoven sheet material and materials produced therefrom

A method for stretching nonwoven sheet material in the cross-machine direction includes coursing a nonwoven sheet material through a deformable nip, the nip being formed between two rotating stretch surfaces having intermeshing peaks and troughs, the surfaces of the peaks and troughs being covered with a deformable material, and contemporaneously pressing the stretch surfaces together while rotating them, such that as the nonwoven material travels through the nip, the nip deforms from an initial flat formation into a convoluted formation.

process for adjusting the water vapor transmission rate of a breathable film.

Tension chain arrangement

Optical bodies including strippable boundary layers

The present disclosure is directed to optical bodies including a first optical film, a second optical film and one or more strippable boundary layers disposed between the first and second optical films. Each major surface of a strippable boundary layer may be disposed adjacent to an optical film or another strippable boundary layer. At least one of the first and second optical films may include a reflective polarizer. The present disclosure is also directed to methods of processing such optical bodies.

Method of making microporous breathable film

A polyolefin microporous breathable film having improved tear and impact strength as well as a soft feel is provided by a film including a polypropylene precursor film and a filler. Other embodiments include a second polymer component.

非均匀增量拉伸零应变拉伸叠层坯料使其产生不同弹性的方法

一种如沿大致垂直于弹性方向的轴线的各点，并在弹性方向测量时，有不均匀程度变化弹性的“零应变”拉伸叠层坯料。并公开了非均匀地拉伸“零应变”拉伸叠层坯料使它在拉伸方向，至少在起始拉伸点的范围内产生弹性的改进方法和装置。这种“零应变”拉伸叠层坯料至少由两层在基本未拉伸的条件下，至少沿它们的一部分共扩张表面彼此断续地或基本连续固定起来的材料组成。该叠层坯料的机械拉伸可以是使该叠层坯料至少通过一对啮合的波纹辊进行。

Films, articles prepared therefrom, and methods of making the same

The invention provides a film comprising at least one layer, wherein the at least one layer comprises a surface area, and wherein the surface area comprises a plurality of stretched segments, and where each stretched segment is, independently, at least one inch in length, and where the at least one layer is formed from a composition comprising one or more polyolefins, and where the combined weight of the one or more polyolefins is greater than 90 weight percent, based on the total weight of the composition. The invention also provides articles, each comprising at least one component formed from an inventive film, and for methods of preparing such films and articles.

Process for stretching incremental portions of an orientable thermoplastic substrate and product thereof

There is disclosed a novel process and product produced thereby for the selective stretching of incremental portions of a substrate of a synthetic thermoplastic material selected from the group consisting of a thermoplastic orientable polymer or a blend of a thermoplastic orientable copolymer in which there is admixed an incompatible second phase selected the group consisting of an incompatible polymer or inorganic material. The substrate is stretched in grooved roller pairs by controlling the velocity of introduction of the substrate to maintain the velocity substantially identical to the surface velocity of the roller pair. Stretching of the blends produce an opaque, low density porous sheet.

Process for stretching an impregnated film of material and the microporous product produced thereby

There is disclosed a novel process and apparatus for selectively stretching incremental portions of a film of material comprised of a blend of a thermoplastic orientable polymer and an incompatible second phase selected from the group consisting of an incompatible polymer or inorganic material or a polymer matrix having an inorganic filler. The film is introduced into the nip of interdigitating rollers with the concomitant controlling of the velocity of film introduction to substantially the identical velocity of the surface velocity of the rollers to form an opaque, low density, microporous film or sheet of material.

Film Formed from a Blend of Biodegradable Aliphatic-Aromatic Copolyesters

A film that is formed from a biodegradable polymer blend of different aliphatic-aromatic copolyesters is provided. More specifically, the blend contains a first copolyester formed from a terephthalic acid monomer. The use of a terephthalic acid monomer results in a polymer chain containing 1,4-(para-) terephthalate units linked in a generally linear configuration (e.g., ˜180°). The blend also contains a second aliphatic-aromatic copolyester formed from a phthalic acid and/or isophthalic acid monomer. The use of such a monomer results in a polymer chain containing 1,2-(ortho-) and/or 1,3-(meta-) linked units. The inclusion of 1,2-(ortho-) and/or 1,3-(meta-) linked units into the polymer backbone of the second copolyester introduces an angle or “kink” (e.g., ˜120° kink for a 1,3-linkage) into the otherwise linear polymer chain. The “kinks” in the second copolyester backbone reduce its melting point and degree of crystallinity, which have an influence on its physical properties (e.g., toughness, tensile strength, and crystallization rate). Thus, the physical properties of the second copolyester may differ substantially from those of the first copolyester. In this regard, the “kinked” second copolyester can provide flexibility for forming films with a wide range of properties that is superior to that which may be achieved using either of copolyesters alone.

Films, articles prepared therefrom, and methods of making the same

The invention provides a film comprising at least one layer, wherein the at least one layer comprises a surface area, and wherein the surface area comprises a plurality of stretched segments, and where each stretched segment is, independently, at least one inch in length, and where the at least one layer is formed from a composition comprising one or more polyolefins, and where the combined weight of the one or more polyolefins is greater than 90 weight percent, based on the total weight of the composition. The invention also provides articles, each comprising at least one component formed from an inventive film, and for methods of preparing such films and articles.

Label for in-mold forming and resin container with the label

A label for in-mold forming which comprises a thermoplastic resin film base layer (I), a heat-sealable resin layer (II), and an antistatic layer (III), wherein the heat-sealable resin layer (II) comprises a heat-sealable resin including a copolymer of propylene and α-olefin having 4-20 carbon atoms and has a degree of non-crystallinity of 60-90% as determined with a differential scanning calorimeter (DSC) at temperatures less than 90° C., the antistatic layer (III) comprises an antistatic agent in an amount of 0.001 to 1 g per unit area (m 2 ) and the surface of the layer has a wettability index (JIS-K-6768) of 32-54 mN/m, and the label has a porosity higher than 10% and not higher than 70% and has an opacity (JIS-P-8138) higher than 20% and not higher than 100%; and a labeled container with the label.

透气薄膜的制造方法

由热塑性聚合物和无机填料的混合物构成的薄膜12,在第一滚子52和第二滚子54之间送进。第一滚子具有被多个有槽的区域58隔开的多个带齿的区域56。该带齿区域包括多个齿57。第二滚子具有多个与第一滚子上的齿啮合的齿61。当薄膜在第一滚子和第二滚子之间送进时,在第一滚子上的有槽区域和第二滚子上的齿之间通过的薄膜的部分,基本上保持为平面形,形成薄膜上的第一区域64;而在第一滚子上的齿和第二滚子上的齿之间通过的薄膜的部分,成形为具有多个升高的肋状件的第二区域66。

液晶显示装置、偏光板和偏振片保护膜

本发明的课题之一在于，提供：液晶显示装置的宽色域化所产生的背光光源的波长光谱的多样化、将偏振片保护膜薄膜化的情况下也能抑制虹斑发生的、液晶显示装置、偏光板、偏振片保护膜。一种偏振片保护膜，其特征在于，由聚对苯二甲酸乙二醇酯系树脂薄膜形成，前述聚对苯二甲酸乙二醇酯系树脂薄膜满足下述的(1)～(2)。(1)聚对苯二甲酸乙二醇酯系树脂薄膜具有3000～30000nm的延迟量、(2)刚直非晶分率为33wt％以上。

模内成型用标签及带有该标签的树脂容器

本发明提供模内成型用标签及具有其的带标签容器，所述模内成型用标签按顺序含有热塑性树脂薄膜基材层(I)、热封性树脂层(II)和防静电层(III)，其中，构成该热封性树脂层(II)的热封性树脂含有丙烯与碳数为4～20个的α-烯烃的共聚物，且其使用差示扫描热量计(DSC)测定的不足90℃的非晶度为60～90％，该防静电层(III)每单位面积(m 2 )含有0.001～1g防静电剂，且其表面的润湿指数(JIS-K-6768)为32～54mN/m，该标签的孔隙率超过10％且在70％以下、且不透明度(JIS-P-8138)超过20％且在100％以下。

Multilayer film for label and a method for providing such

The invention relates to providing a method for obtaining a multilayer film for thermally inducible shrink labels, products thereof and use of such products.

Enhanced processing oriented polypropylene films

Described is a film, a method of making the film, and a method of packaging articles with the film, the film oriented in at least one direction, and comprising a core layer comprising polypropylene comprising from 0 wt % to 2 wt % comonomer-derived units, from 1 wt % to 20 wt %, by weight of the core layer, of propylene-α-olefin elastomer, and from 1 wt % to 20 wt %, by weight of the core layer, of hydrocarbon resin possessing a softening point of from greater than 100° C.

Film material with textile properties, method and device for its production

FIELD: process engineering. SUBSTANCE: invention relates to light material, particularly to films with textile properties. It if made from thermoplastic polymer. It is processed to form linear areas A interconnected by linear crosspieces B. Note here that every area A and crosspiece B are oriented. Note here that prevailing direction of orientation in areas A forms angle v relative to direction wherein A extend. Note also that crosspieces B comprises multiple straight grooves of finer material or slits making angle u larger than v relative to direction in which A pass. Proposed method comprises passage of oriented film through two engage rifled rolls for cold stretching of the film in direction at the angle relative to prevailing initial orientation. Note also that, at least, one of said rifled rolls has sharp-edge flanges to separate areas A from crosspieces B and to stretch the material for making crosspieces B. at the same time material stretching to form areas A is smaller or is not made at all. Preferably, one of said rifled rolls has ledges with wavy surface. EFFECT: film with textile properties. 18 dwg, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 486 058 (13) C2 (51) МПК B29C 55/18 B32B 27/32 B32B 37/00 (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010134368/05, 15.01.2009 (24) Дата начала отсчета срока действия патента: 15.01.2009 (72) Автор(ы): РАСМУССЕН Оле-Бентт (CH), РАСМУССЕН Николай Веттергрен (CH) (73) Патентообладатель(и): РАСМУССЕН Оле-Бентт (CH) R U Приоритет(ы): (30) Конвенционный приоритет: 17.01.2008 GB 0800828.6 05.08.2008 GB 0814308.3 (43) Дата публикации заявки: 27.02.2012 Бюл. № 6 2 4 8 6 0 5 8 (45) Опубликовано: 27.06.2013 Бюл. № 18 (56) Список документов, цитированных в отчете о поиске: WO 2006072604 А2, 13.07.2006. GB 1526722 A, 27.09. 1978. WO 9112125 A1, 22.08.1991. EP 0810078 A1, 03.02.1997. RU 2290313 C2, 27.12.2006. 2 4 8 6 0 5 8 R U (86) Заявка ...

シ−ト状物の延伸装置

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

웨브에 다양한 탄성 변화를 주기 위해서 무변형 연신 적층 웨브를 불균일하게 연신하는 방법 및 장치

"무변형" 연신 적층 웹은 탄성화 방향에 거의 평행하게 배향된 축선의 여러 점에서 탄성화 방향으로 측정될 때, 탄성의 불균일한 정도를 보여준다. 또한 적어도 초기 연신점까지 웹에 탄성을 주기 위해서, "무변형" 연신 적층웹을 불균일하게 연신하는 방법 및 장치가 개시된다. 상기 "무변형" 연신 적층 물질(1)은 적어도 두겹의 물질(4a)(5)(6)로 이루워지며, 이 물질은 거의 무장력("무변형") 상태로 적어도 동일 연신 표면의 일부분을 따라서 단속적으로 또는 거의 연속적으로 서로 부착된다. 겹중 하나(4a)는 연신가능하고 탄성적이며, 제 2 겹(5)(6)은 반드시 탄성적은 아니지만, 연신 가능한 것이다. 제 2 겹은 적층물을 연신할 때 최소한 어느 정도 영구적으로 연신될 수 있으므로, 가해진 장력을 제거해도, 그것의 변형되지 않은 원래의 형태로 복귀되지는 않을 것이다. 이것은 가해진 장력이 제거될 때, 적층웹의, Z 방향 벌킹을 일으킬 뿐아니라, 그이후에 적어도 초기연신점까지 초기 연신 방향으로 탄성 신장을 일으킨다. 특히 본 발명의 바람직한 실시예에 있어서, 상기 적층웹의 기계적 연신은, 맞물림 파형 롤(21, 25)중 적어도 한쌍간에 상기 적층웹을 통과 시키므로써 실행되며, 상기 파형롤간의 맞물림 정도는 상기 롤의 외주에 대해 불균일하므로써, 상기 적층웹은 이것이 합성 웹에 어느정도 탄성을 주기 위해서 롤 사이로 지나갈때, 불균일하게 증분적으로 연신될 수 있다.

Bow spreader bar

A bow spreader bar employed in a plastic film processing arrangement incorporates an extruded member and a low-friction plastic wear cover. The bow spreader bar is positioned in advance of the film take-up roll and presses into the film web to eliminate folds, wrinkles, or creases. The extrusion can be of aluminum or another light-weight material having a T-shaped profile that is rounded on a side that faces the film so that the extrusion has an arcuate front surface. The associated wear cover is made of a wear resistant plastic material and is disposed on the arcuate surface of said extrusion. Preferably, the extrusion is formed with one or more tubular portions and can be fitted for fluid cooling. The arcuate surface of the extrusion can be provided with a low-friction surface treatment.

Ribbed film structures with pigment created visual characteristics

In one example embodiment, a film includes a coextruded structure having both an extruded ribbed skin layer that includes a plurality of ribs, and a core layer. The ribs are spaced apart by a web that is integral with the ribs. The film also includes a coloring agent that is substantially more apparent in the ribs than in the web, such that a contrast in color and/or color intensity between the ribs and the web is visible.

Ribbed film structures with voiding agent created visual characteristics

In one example embodiment, a film includes a coextruded structure having both an extruded ribbed skin layer that includes a plurality of ribs, and a core layer. The ribs are spaced apart by a web that is integral with the ribs. The film also includes a voiding agent in the ribs of the skin layer.

Discontinuously laminated film structures with improved visual characteristics

In one example embodiment, a laminated film includes an extruded ribbed first film portion that includes multiple ribs, where consecutive ribs are separated by webs that are integral with the ribs. The laminated film also includes an un-ribbed second film portion, and a region of discontinuous lamination between the first film portion and the second film portion. The region of discontinuous lamination includes multiple regions where the first and second film portions are bonded together, and multiple regions where the first and second film portions are not bonded together.

Discontinuously laminated film structures with improved visual characteristics

In one example embodiment, a laminated film includes an extruded ribbed first film portion that includes multiple ribs, where consecutive ribs are separated by webs that are integral with the ribs. The laminated film also includes an un-ribbed second film portion, and a region of discontinuous lamination between the first film portion and the second film portion. The region of discontinuous lamination includes multiple regions where the first and second film portions are bonded together, and multiple regions where the first and second film portions are not bonded together.

Thermoplastic films with visually-distinct stretched regions and methods for making the same

Thermoplastic films include intermittent stretched regions that are visually distinct from un-stretched regions. The stretched regions can be white, opaque, and non porous. The thermoplastic films with visually-distinct stretched regions can be formed into bags for use as trash can liners or food storage. Additionally, methods of stretching thermoplastic films to create non-porous, white, and opaque stretched regions include incrementally stretching a film of a thermoplastic material and a voiding agent.

Preparation of transversely fibrillated film

Transversely fibrillated films are prepared by embossing a molten thermoplastic film with transverse striations, transversely stretching the film while leaving an unstretched edge portion which, after stretching is at least 100 percent thicker than the embossed and stretched section. The film is then subjected to fibrillating stress under conditions whereby the thick edges are not affected. These edges then serve to hold the transverse fibers, resulting from the fibrillation, together in an integral structure for further handling. The fibrillation structure is useful for preparing laminar nonwoven fabrics having the filaments in different layers disposed at an angle to one another.

Film formed from a blend of biodegradable aliphatic-aromatic copolyesters

A film that is formed from a biodegradable polymer blend of different aliphatic-aromatic copolyesters is provided. More specifically, the blend contains a first copolyester formed from a terephthalic acid monomer. The use of a terephthalic acid monomer results in a polymer chain containing 1,4-(para-) terephthalate units linked in a generally linear configuration (e.g., ˜180°). The blend also contains a second aliphatic-aromatic copolyester formed from a phthalic acid and/or isophthalic acid monomer. The use of such a monomer results in a polymer chain containing 1,2-(ortho-) and/or 1,3-(meta-) linked units. The inclusion of 1,2-(ortho-) and/or 1,3-(meta-) linked units into the polymer backbone of the second copolyester introduces an angle or “kink” (e.g., ˜120° kink for a 1,3-linkage) into the otherwise linear polymer chain. The “kinks” in the second copolyester backbone reduce its melting point and degree of crystallinity, which have an influence on its physical properties (e.g., toughness, tensile strength, and crystallization rate). Thus, the physical properties of the second copolyester may differ substantially from those of the first copolyester. In this regard, the “kinked” second copolyester can provide flexibility for forming films with a wide range of properties that is superior to that which may be achieved using either of copolyesters alone.