Patent ID: 8980430
Filing Date: 2015-03-17
Classification: B32B,Y10S,Y10T

Abstract:
1. A multilayer film comprising: a) a fluoropolymer layer having a first corona treated surface, and a second surface opposed to the first corona treated surface; wherein the fluoropolymer layer comprises a polychlorotrifluoroethylene; b) an adhesive layer comprising a hydroxyl-terminated poly(ester-urethane) copolymer; wherein the hydroxyl-terminated poly(ester-urethane) copolymer is produced by polymerizing a hydroxyl-terminated ester-urethane pre-polymer with a polyfunctional isocyanate at a prepolymer to polyfunctional isocyanate ratio of 10:1, the adhesive layer being in contact with the first corona treated surface of the fluoropolymer layer; and c) a thermoplastic polymer layer comprising ethylene vinyl acetate copolymer and having a first surface, and a second surface opposed to the first surface, the thermoplastic polymer layer being attached to the fluoropolymer layer such that the adhesive layer is positioned in contact with the first corona treated surface of the fluoropolymer layer and the first surface of the thermoplastic layer; the multilayer film having a bond strength between the fluoropolymer layer and the thermoplastic layer of greater than about 300 g/in (g/2.54 cm).