Patent ID: 7572519

Claim:
A multilayer stretch film comprising at least a first stretchable layer (i) with cling properties comprising an olefin (co)polymer composition, and a second stretchable layer (ii) with slip properties comprising another olefin (co)polymer composition, wherein the outer surface of the first layer (i) is provided with a non-stretchable thin film (iv) consisting essentially of one or more slip agent(s) covering at least 50% up to 100% of the outer surface of the first layer lowering the cling properties of the unstretched film, wherein the non-stretchable thin film (iv) is formed by migration of the one or more slip agents from the first stretchable layer (i); wherein the one or more slip agent(s) comprises a low molecular weight compound selected from the group consisting of stearic acid, 12-hydroxystearic acid, icosanoic acid, docosanoic acid, fatty acid amides, ethoxylated fatty acid amines, N,N-bis-(2-hydroxyethylene)amides of long chain fatty acids, polar ethylene wax, montanic acid, montanic acid ester wax, N,N-bis-stearoyl ethylene diamine, esters of polycarboxylic acids and mixtures thereof; and wherein stretching the film results in tearing of the non-stretchable thin film (iv) resulting in the film after stretching from 100% to 200% having cling that is higher than the film prior to stretching, said cling following stretching being in the range of 30 g/cm to 180 g/cm.