B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/12 (2006.01) D06M 17/04 (2006.01)
Patent
CA 2464070
An article (10) having (a) a layer of fabric (11) having a first surface (20) and a second surface (21) made of polytetrafluoroethylene fibers; and (b) a first composite (14) comprising (i) a porous PTFE film (13) having interconnected passages and pathways and (ii) a fluoropolymer adhesive (12), wherein said fluoropolymer adhesive (12) is at least partially contained in said passages and pathways of said PTFE film (13), said first composite (14) disposed adjacent to said first surface (20) of said fabric (11), wherein the article (10) passes a Newark Flex test after 10,000 cycles. In another embodiment, the invention includes a second composite (15) comprising (i) a porous PTFE film (17) having interconnected passages and pathways and (ii) a fluoropolymer adhesive (16), wherein said fluoropolymer adhesive (16) is at least partially contained in said passages and pathways of said PTFE film (17), said second composite (15) disposed adjacent to said second surface (21) of said fabric (11). The article of the present invention is preferably waterproof, fire retardant, and flexible. It is also preferably an architectural fabric for retractable, temporary, or permanent structures and is adapted to be joined to itself by heat welding.
L'invention concerne un article (10) comportant (a) une couche de tissu (11), comprenant une première surface (20) et une seconde surface (21), constitué de fibres de polytétrafluoroéthylène, et (b) un premier composite (14) comprenant (i) un film de PTFE poreux (13) contenant des passages et des voies interconnectés et (ii) un adhésif à base de polymère fluoré (12), cet adhésif (12) étant au moins partiellement contenu dans les passages et voies du film en PTFE (13), le premier composite (14) étant disposé adjacent à la première surface (20) du tissu (11), et l'article (10) passant un test Newark Flex après 10000 cycles. Dans un autre mode de réalisation, l'invention concerne un second composite (15) comprenant (i) un film de PTFE poreux (17) contenant des passages et des voies interconnectés et (ii) un adhésif à base de polymère fluoré (16), cet adhésif (16) étant au moins partiellement contenu dans les passages et voies du film en PTFE (17), le second composite (15) étant disposé adjacent à la seconde surface (21) du tissu (11). L'article de l'invention est, de préférence, imperméable, ignifuge et souple. C'est aussi, de préférence, un tissu architectural destiné à des structures rétractables, temporaires ou permanentes et il est conçu pour être soudé sur lui-même à la chaleur.
Greene William
Kelmartin Thomas
Lappe Suellen
Wallace Thomas
Gore Enterprise Holdings Inc.
Gowling Lafleur Henderson Llp
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