Coated textile materials
AssigneeScapa Group PLC
InventorFrederick Doran
Life of this patent
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Abstract
A coated textile material, particularly for use as a durable filter fabric, is made from a textile substrate, such as a woven fabric, having a microporous coating of an elastomeric fluorocarbon polymer. The substrate may be formed from aramid or polyphenylene sulphide or glass fibres. The elastomeric polymer may be a vinylidene fluoride pentafluoropropene tetrafluoroethylene terpolymer. The microporous coating may be applied as a formed aqueous emulsion which is dried and mechanically crushed.
Claims12
A coated textile material comprising a textile substrate having applied thereto a microporous coating of an elastomeric copolymer wherein at least one component thereof is a fluorocarbon, wherein the coating is formed as a compressed foam layer at the surface of the textile substrate, said layer being compressed on the said surface and being set to form a coherent porous membrane.
A method of forming a coated textile material wherein a foamed aqueous emulsion of an elastomeric copolymer of which at least one component is a fluorocarbon is applied to the surface of a textile substrate by use of a compressive coating technique which constrains the foamed emulsion to form a compressed foam layer at said surface by compression of the foam on said surface, and wherein said layer is set to form a coherent porous membrane.
Dependencies are inferred from the claim text.