Backcoating of polypropylene fabric
AssigneePPG Industries, Inc.
InventorGeorge Brodmann
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Abstract
Backcoated polypropylene fabric is prepared by applying to one side of polypropylene fabric a backcoating composition of poly(vinyl chloride/vinylidene chloride) copolymer in 1,1,1-trichloroethane solvent and subsequently vaporizing the solvent from the fabric.
Claims5
A method of backcoating polypropylene fabric by applying to one surface of the fabric a backcoating composition comprising polymer and solvent, said polymer being a solid high molecular weight 1,1,1-trichloroethane soluble polymer containing at least 50 weight percent of poly(vinyl chloride/vinylidene chloride) copolymer and said solvent consisting essentially of 1,1,1-trichloroethane;
- thereafter, affixing the polymer by volatilizing the solvent from the fabric.
Dependencies are inferred from the claim text.