Patent ID: 8377529
Filing Date: 2013-02-19
Classification: B32B,Y10T

Abstract:
1. A coextruded multilayer film comprising: a) a core layer comprising polyamide; b) a first intermediate layer, directly adjacent the core layer, comprising ethylene vinyl alcohol copolymer c) a second intermediate layer, directly adjacent the core layer, comprising ethylene vinyl alcohol copolymer; d) a first outer layer comprising olefinic copolymer or amorphous cyclic olefin copolymer; e) a second outer layer comprising olefinic copolymer or amorphous cyclic olefin copolymer; f) a first tie layer adhering the first intermediate layer to the first outer layer; and g) a second tie layer adhering the second intermediate layer to the second outer layer; wherein the ethylene vinyl alcohol copolymer of the first intermediate layer has an ethylene content, in mole %, at least 5 greater than the ethylene content, in mole %, of the ethylene vinyl alcohol copolymer of the second intermediate layer.