Patent ID: 6361856
Filing Date: 2002-03-26
Classification: B32B,C08J,C08L,Y10S,Y10T

Abstract:
A tearable film having a five layer structure of (A) layer/(B) layer/(C) layer/(B) layer/(A) layer and a thickness of about 25-100 &mgr;m, wherein each (A) layer comprises about 97-60% by weight of polyethylene-2,6-naphthalate having an intrinsic viscosity (&eegr;) of about 0.35-0.45 dl/g and about 3-40% by weight of at least one polyolefin selected from the group consisting of polypropylene and poly-4-methyl-1-pentene as an essential component, wherein each (B) layer comprises an adhesive resin as an essential component and wherein the (C) layer comprises polyolefin and/or polystyrene as an essential component.