Patent ID: 8029885
Filing Date: 2011-10-04
Classification: B32B,Y10T

Abstract:
1. A multi-layer film comprising: a surface layer having a thickness of 10 to 50 μm made of an ethylene-α-olefin copolymer having a density of 0.935 to 0.950 g/cm a flexible layer having a thickness of 100 to 200 μm made of an ethylene-α-olefin copolymer having a density of 0.860 to 0.930 g/cm a barrier layer having a thickness of 10 to 80 μm made of a mixed resin containing (a) 60 to 95% by weight of a cyclic olefin polymer and (b) 5 to 40% by weight of an ethylene-α-olefin copolymer having a density of 0.900 to 0.965 g/cm a seal layer having a thickness of 5 to 80 μm made of an ethylene-α-olefin copolymer having a density of 0.910 to 0.950 g/cm