Patent ID: 6808822
Filing Date: 2004-10-26
Classification: B32B,Y10S,Y10T

Abstract:
A halogen-free, uniaxially oriented, multilayered heat shrink film comprising (A) a core layer comprising a polyolefin blend of (i) a copolymer of propylene with an alpha olefin and (ii) a homopolymer of butylene or propylene or a copolymer of butylene with an alpha olefin, the core having an upper and lower surface, (B) a first skin layer on the upper surface of the core layer, and (C) a second skin layer on the lower surface of the core layer, wherein the first and second skin layers independently comprise a copolymer of propylene with an alpha olefin, wherein the ultimate shrinkage of the film is at least 40% at 2700Â° F. (132Â° C.).