Method of making architectural fabric
View Patent ↗An article having (a) a layer of fabric having a first surface and a second surface made of polytetrafluoroethylene fibers; and (b) a first composite comprising (i) a porous PTFE film having interconnected passages and pathways and (ii) a fluoropolymer adhesive, wherein said fluoropolymer adhesive is at least partially contained in said passages and pathways of said PTFE film, said first composite disposed adjacent to said first surface of said fabric, wherein the article passes a Newark Flex test after 10,000 cycles. In another embodiment, the invention includes a second composite comprising (i) a porous PTFE film having interconnected passages and pathways and (ii) a fluoropolymer adhesive, wherein said fluoropolymer adhesive is at least partially contained in said passages and pathways of said PTFE film, said second composite disposed adjacent to said second surface of said fabric. 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.
1. A method of making an architectural fabric for a retractable, temporary, or permanent structure comprising the steps of:
(a) providing a layer of fabric having a first surface and a second surface and comprising polytetrafluoroethylene fibers;
(b) providing a first layer and a second layer of porous expanded polytetrafluoroethylene membrane;
(c) providing a first layer and a second layer of THV;
(d) laminating said first layer of THV to said first layer of porous expanded polytetrafluoroethylene membrane to form a first THV/membrane composite;
(b) laminating said first THV/membrane composite to said first surface of said fabric;
(f) laminating said second layer of THV to said second layer of porous expanded polytetrafluoroethylene membrane to form a second THV/membrane composite; and
(g) laminating said second THV/membrane composite to said second surface of said fabric.