WRAPPING FILM OF ETHYLENE COPOLYMERS

摘要

A wrapping film suitable for pallet stretch wrap applications is manufactured by the blown bubble process with extra cooling at the <> from a blend of a linear ethylene/alpha olefin copolymer containing 3 to 18% by weight of alpha olefin and from 10 to 75% or more preferably from 45 to 55% by weight of the blend of a linear ethylene/butene-1 copolymer containing 3 to 18% by weight of butene-1. The alpha olefin is predominantly a C6 to C8 monomer or isomer thereof with or without a minor amount of a second different C4 to C8 olefin monomer, for example butene-1. Films of the blend have both high clarity and desirable tear resistance and break elongation properties. The films may contain a tackifying agent such as polyisobutylene.