Irradiated multilayer film for primal meat packaging

Details Irradiated multilayer film for primal meat packaging Irradiated multilayer film for primal meat packaging

B - Operations, Transporting

32

B

18/1180, 18/783,

B32B 27/30 (2006.01) B29C 49/04 (2006.01) B32B 27/16 (2006.01) B32B 33/00 (2006.01)

Patent

CA 1341599

A heat-shrinkable, multilayer film suitable for use in fabricating bags for packaging primal and sub-primal meat cuts and processed meats. The multilayer film has a first outer layer of a first ethylene-vinyl acetate copolymer, a core layer of a barrier film comprising a polyvinylidene chloride vinyl chloride copolymer containing between about 70 weight percent and about 90 weight percent vinylidene chloride, and a second outer layer of a second ethylene-vinyl acetate copolymer. The multilayer film is preferably made by co-extrusion of the layers, and then it is biaxially stretched. After biaxial stretching, the multilayer film is irradiated to a dosage level of between 2 megarads and 3 megarads and heat-sealed in the form of a bag. The bag has improved toughness properties and heat-sealing characteristics and is not significantly discoloured by the irradiation.

496611

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