Patent ID: 6682822
Filing Date: 2004-01-27
Classification: B32B,Y10T

Abstract:
A multilayer polymeric film comprising:(a) a core layer comprising a thermoplastic polymer, the core layer having a first side and a second side, and the thermoplastic polymer of the core layer being selected from the group consisting of ethylene homopolymer, propylene homopolymer, butene-1 polymer, propylene-ethylene copolymer, and propylene-butene-1 copolymer; (b) a functional layer which is printable or sealable or treatable fur printing or sealing on the first side of the core layer, the functional layer comprising a film-forming polymer selected from the group consisting of (i) a homopolymer of ethylene or propylene, (ii) a copolymer of ethylene, propylene, butylene, or an olefin having from 5 to 10 carbon atoms, (iii) a terpolymer of ethylene, propylene, butylene, or an olefin having from 5 to 10 carbon atoms, and (iv) a blend thereof; and (c) an additional layer on the second side of the core layer comprising (i) a highly crystalline polypropylene having a decalin solubles content of about 1 to about 5% by weight, and meso pentads of equal to or greater than 85.00, as measured by 13C NMR spectroscopy, (ii) from about 0.1% to about 0.5% by weight of fully cross-linked antiblock particles, and (iii) from about 0.1% to about 2% by weight of silicone oil.