Patent ID: 8168297

Claim:
A fluoropolymer coated film comprising: a polymeric substrate film; and a fluoropolymer coating directly on the polymeric substrate film, the fluoropolymer coating comprising: a fluoropolymer selected from the group consisting of homopolymers and copolymers of vinyl fluoride and homopolymers and copolymers of vinylidene fluoride; and a compatible cross-linked adhesive polymer comprising functional groups selected from the group consisting of carboxylic acid, sulfonic acid, aziridine, anhydride, amine, isocyanate, melamine, epoxy, hydroxyl, and combinations thereof, wherein the compatible cross-linked adhesive polymer is selected from the group consisting of polyesters, polyester urethanes, polycarbonates, polycarbonate urethanes, acrylics, acrylic polyurethanes, polyethers, polyether urethanes, ethylene vinyl alcohol copolymers, ethylene vinyl alcohol copolymer urethanes, polyamides, polyamide urethanes, polyamide ureas, polyacrylamides, polyacrylamide urethanes and combinations thereof, wherein the fluoropolymer coating comprises interpenetrating networks of fluoropolymer and compatible cross-linked adhesive polymer and the compatible cross-linked adhesive polymer has pendant functionality capable of reacting with complementary functional groups on the substrate film surface; wherein the polymeric substrate film comprises functional groups that interact with the compatible cross-linked adhesive polymer to promote bonding of the fluoropolymer coating to the polymeric substrate film.