William P Mortimer Jr: Polytetrafluoroethylene film. W L Gore & Associates, Gary A Samuels, January 15, 1991: US04985296 (199 worldwide citation)

A filled PTFE film is prepared by compressing an expanded, porous PTFE film that contains filler material. The films have high strength with substantially few pinholes.

Paresh J Sheth: Breathable films prepared from melt embossed polyolefin/filler precursor films. Exxon Chemical Patents, Charles E Smith, John F Hunt, October 11, 1988: US04777073 (114 worldwide citation)

A breathable polyolefin film is prepared by melt embossing a highly filled polyolefin film to impose a pattern of different film thickness therein and by stretching the melt embossed film to impart greater permeability in the areas of reduced thickness in comparison to the areas of greater thickness ...

Takashi Akiyama, Akinori Tanji, Hideo Ikeda, Seiichi Asano: Method for producing non-woven webs. Toyobo, Birch Stewart Kolasch and Birch, December 27, 1977: US04064605 (100 worldwide citation)

A method for continuously producing a non-woven web having uniform distribution of filaments from natural or synthetic fibers comprising drafting with use of a high speed air-jet type drafting device a number of filaments which are fed from a filament source and blasting the drafted filaments onto a ...

Barry Jay Anderson, Todd Leon Mansfield, George Christopher Dobrin, Suna Polat: Method of making a breathable and liquid impermeable web. The Procter & Gamble Company, Caroline Wei Berk, Ken K Patel, Steven W Miller, August 12, 2003: US06605172 (92 worldwide citation)

A method is disclosed for modifying the physical characteristics of a web which involves passing the web between at least one pair of interengaged rolls to incrementally stretch the web, and then withdrawing the incrementally stretched web from between the rolls under tension. A web modified accordi ...

Ruth Lisa Levy, Henry Louis Griesbach III, Jay Sheldon Shultz, La Donna Lynn McCullar Bishop Brown: Perforated nonwoven fabrics. Kimberly-Clark Worldwide, Michael U Lee, February 3, 1998: US05714107 (72 worldwide citation)

The invention provides a perforated nonwoven web fabricated from a bonded thermoplastic polymer web. The perforated nonwoven web contains a multitude of self-sustaining sustaining perforations that are substantially free of melt-fused edges and can be characterized as stretch-opened perforations. Th ...

Shinji Tanaru, Osamu Tanaka, Hirofumi Nishibayashi, Osamu Inoue, Katsutoshi Yamamoto, Toshio Kusumi: Polytetrafluoroethylene porous film and preparation and use thereof. Daikin, Birch Stewart Kolasch & Birch, August 10, 1993: US05234739 (56 worldwide citation)

A polytetrafluoroethylene porous film, which is prepared by stretching a semisintered polytetrafluoroethylene material and heating the stretched material at a temperature higher than the melting point of sintered polytetrafluoroethylene, has an area ratio of fibrils to nodes of from 99:1 to 75:25, a ...

Wilkes Andrew George, Bartholomew Alan John: Cellulosic fibre.. Courtaulds, February 1, 1989: EP0301874-A1 (54 worldwide citation)

Viscose filaments, preferably in staple fibre form, have a decitex of less than 5.0 and a multi-limbed cross-section, the limbs having a length-to-width aspect ratio of at least 2:1. Examples of multi-limbed cross-sectional shapes are Y-, X-, H- and T- shapes. The fibre can be formed into woven, non ...

Dry-spinning polymer filaments. Stamicarbon, September 24, 1980: GB2042414-A (54 worldwide citation)

A process for making polymer filaments which have a high tensile strength and a high modulus by stretching a polymer filament which contains a substantial amount, eg at least 25 wt of polymer solvent at a temperature between the swelling point and the melting point of the polymer. A solution of the ...

Ronald S Nohr, J Gavin MacDonald: Method of forming a nonwoven web from a surface-segregatable thermoplastic composition. Kimberly Clark Corporation, William E Maycock, August 15, 1989: US04857251 (53 worldwide citation)

A nonwoven web is prepared by the method of forming a nonwoven web from a composition composed of at least one thermoplastic polymer and at least one defined siloxane-containing additive, which method involves the steps of (A) forming fibers by extruding a molten thermoplastic composition through a ...

Kavesh Sheldon, Prevorsek Dusan Ciril: Process for producing high tenacity, high modulus crystalline thermoplastic article and novel product fibers.. Allied, November 10, 1982: EP0064167-A1 (47 worldwide citation)

Solutions of ultrahigh molecular weigh polymers such as polyethylene in a relatively non-volatile solvent are extruded through an aperture (25) at constant concentration through the aperture and cooled to form a first gel of indefinite length (33). The first gels are extracted (D) with a volatile so ...

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