Multilayer polyolefin film containing recycle polymer for...

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B - Operations, Transporting

29

C

B29C 47/06 (2006.01) B29B 17/00 (2006.01) B32B 27/32 (2006.01) B29C 35/02 (2006.01) B29C 55/00 (2006.01) B29C 61/06 (2006.01)

Patent

CA 2148072

A process for the manufacture of a multilayer cross-linked, heat-shrinkable, polyolefin film, said film having at least one inner layer comprising thermo- plastic polymer sandwiched between two outer layers comprised of thermoplastic polymer different from the thermoplastic polymer of said inner layer, comprising the steps of a) coextruding the materials into a tape; b) cross-linking it; c) converting said cross-linked tape into a heat- shrinkable film by orientation; characterized in that scrap material produced in the manufacture or in the further processing to finished articles of cross-linked films of this same structure is incorporated by recycling it into said step a) in an amount up to 50% by weight of the total film weight.

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