Composite polyolefin films suitable for packaging

Details Composite polyolefin films suitable for packaging Composite polyolefin films suitable for packaging

B - Operations, Transporting

32

B

B32B 27/08 (2006.01) B32B 27/32 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2138813

Disclosed are composite films comprising: A) a single- or multilayer bioriented film, wherein the single layer or at least one layer of said bioriented film is propylene crystalline homopolymer; and B) a single- or multilayer cast film, wherein the single layer or at least one layer of said cast film is a layer of a composition comprising: I) propylene crystalline homopolymer, or a crystalline copolymer of propylene with ethylene and/or a C4-C8 .alpha.-olefin; II) a copolymer fraction containing propylene and ethylene, insoluble in xylene at ambient temperature; III) a copolymer of ethylene with propylene and/or a C4-C8 .alpha.-olefin and soluble in xylene at ambient temperature.

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