Patent ID: 7273653
Filing Date: 2007-09-25
Classification: B32B,C08J,C08K,C08L,Y10T

Abstract:
1. A resin film of a two-layer construction comprising: (a) a resin layer R1 comprising a non-stretched resin film which consists essentially of a thermoplastic polyester resin containing 3 to 30 percent by weight in a weight fraction in the entire resin of a granular resin with a grain diameter of 0.1 to 5 μm, said granular resin is a modified polyolefin resin containing 2 to 20 percent by weight of a functional group, said functional group being a functional group selected from the group consisting of a carboxylic acid group and a carboxylic acid ester group, and (b) a polyester resin layer R0 containing at least one of polyethylene terephthalate and isophthalic acid copolymerized polyethylene terephthalate, as a basic skeleton, wherein the resin layer R1 and the resin layer R0 are laminated to each other.