MULTILAYER FILM COMPRISING A CORE LAYER OF ETHYLENE-ALPHA-OLEFIN COPOLYMER AND TWO SKIN LAYERS FORMED FROM VARIOUS ETHYLENE-PROPYLENE COPOLYMERS AND POLYBUTYLENE, PROPYLENE POLYMERS OR COPOLYMERS AND PROPYLENE-BUTENE, OR PROPYLENE-BUTENE COPOLYMER BLENDS; PACKAGING MATERIALS

摘要

A multilayered thermoplastic film 10 having improved lap seal strength includes skin layers 12, 16 having blends of ethylene propylene copolymer with polybutylene or propylene butene copolymer, or propylene butene copolymer. The core layer 14 comprises a linear ethylene alpha-olefin copolymer. Oriented shrink films can beneficially be made from three and five layer formulations including such skin layer compositions. <IMAGE>