Waterproof cloth and process for production thereof
AssigneesKuraray Co., Ltd., I.S.T. Corporation
InventorsIsamu Sakane, Satuski Kawauchi, Tsuneo Gemba, Minoru Maekawa
Life of this patent
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Abstract
A waterproof cloth comprising a base cloth made of heat-resistant fibers having a fluorine resin adhering to their surface and a film of a fluorine resin fused integrally to at least one surface of the base cloth. The waterproof cloth can be produced by laying the film on the base cloth and heating them under pressure.
Claims15
A waterproof cloth comprising
- (1) a base cloth woven or knitted from treated yarns formed by impregnating yarns of heat-resistant fibers with a dispersion of fluorine resin, drying the impregnating yarns, and sintering the dryed yarns to adhere fluorine resin to the surfaces thereof and
- (2) a film of a fluorine resin fused integrally to at least one surface of the base cloth.
A process for producing a waterproof cloth, which comprises impregnating yarns of heat-resistant fibers with a dispersion of a fluorine resin, drying the impregnated yarns and sintering them to form yarns having the fluorine resin adhering to their surface, weaving or knitting a base cloth from the resulting yarns, laying a film of a fluorine resin on one or both surfaces of the base cloth, and heating the assembly under pressure to fuse the film to one or both surfaces of the base cloth.
Dependencies are inferred from the claim text.