초록 ▼

A composite multiple-layer film, suitable as a packaging film, having a base layer of a propylene polymer and at least one surface layer formed from a blend of a propylene-ethylene block copolymer and an ethylene-higher olefin random copolymer. The composite film is preferably coextruded and is suit

A composite multiple-layer film, suitable as a packaging film, having a base layer of a propylene polymer and at least one surface layer formed from a blend of a propylene-ethylene block copolymer and an ethylene-higher olefin random copolymer. The composite film is preferably coextruded and is suitable as a substrate for additional polymeric layer(s), such as heat-sealable coatings, which may be adhered to the substrate by a polymeric primer resin.

대표청구항 ▼

A multiple-layer film comprising a polyolefin base layer and, on at least one surface thereof, a receptive layer wherein the polyolefin of the base layer comprises a propylene polymer and the at least one receptive layer comprises a blend of (a) a propylene-ethylene end block copolymer containing fr

A multiple-layer film comprising a polyolefin base layer and, on at least one surface thereof, a receptive layer wherein the polyolefin of the base layer comprises a propylene polymer and the at least one receptive layer comprises a blend of (a) a propylene-ethylene end block copolymer containing from 1 to 20% of ethylene by weight of the end block copolymer, and (b) an ethylene-monoalphaolefin random copolymer containing from 1 to 15% by weight of the random copolymer of a monoalphaolefin the molecule of which contains from 3 to 10 carbon atoms, the weight ratio of the propylene-ethylene end block copolymer to the ethylene-monoalphaolefin random copolymer in the blend being within a range of from 0.5:1 to 99:1.