Patent ID: 6348271
Filing Date: 2002-02-19
Classification: B29C,B29K,C08J,C08L,Y10T

Abstract:
A monolayer or multilayer film having a thickness D1 of 10 to 100 &mgr;m, wherein the film comprises at least one layer obtained by processing and drawing a propylene resin composition in at least monoaxial direction, and the propylene resin composition comprises 93 to 30% by weight of a propylene polymer component and 7 to 70% by weight of a copolymer component comprising ethylene and propylene, and the film has the following characteristics:(1) TH2O=9 to 50 g/m2Â·24 Hr, when measured in accordance with JIS Z-0208, wherein TH2O represents a permeability of water vapor, (2) TO2=600 to 12,500 nmol (STP)/m2Â·S 100 kPa, when measured in accordance with JIS K-7126A, wherein TO2 represents a permeability of oxygen gas, and (3) Tethylene=600 to 22,500 nmol (STP) /m2Â·S 100 kPa, when measured in accordance with JIS K-7126A, wherein Tethylene represents a permeability of ethylene gas.