Patent ID: 7504141

Claim:
A shrink film comprising a polyethylene film, comprising an ethylene copolymer mixture having a molecular weight distribution in the range 10 to 35, a density of 915 to 940 kg/m 3 , a weight average molecular weight of at least 100000 D and an MFR 2.16 (190° C.) of 0.1 to 0.9 g/10 min, which copolymer mixture is produced by a two or more stage copolymerization of ethylene and 2 to 10% mole (relative to ethylene) of a C 3-12 alpha-olefin comonomer in a series of reactors including at least one slurry loop reactor and at least one gas phase reactor using a heterogeneous Ziegler-Natta catalyst; wherein the copolymer mixture is bimodal and comprises a lower molecular weight component and a higher molecular weight component; and wherein the lower molecular weight component has an MFR 2 of at least 100 g/10 min and a density of from 945 kg/m 3 to 960 kg/m 3 .