摘要 |
Multiple-layer, heat-sealable films are described comprising a substrate layer of polypropylene homopolymer or copolymer, or blends thereof with compatible polyolefins; and at least one heat-sealable surface layer of a blend poly(1-butene), and a copolymer of ethylene or propylene and a higher olefin. The films are prepared by extrusion coating or coextrusion and can be oriented.
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