Pasteurizable, cook-in shrink film

Details Pasteurizable, cook-in shrink film Pasteurizable, cook-in shrink film

B - Operations, Transporting

29

C

18/783, 204/91.5

B29C 47/06 (2006.01) B32B 27/08 (2006.01) B65D 81/34 (2006.01)

Patent

CA 1209310

PASTEURIZABLE, COOK-IN SHRINK FILM ABSTRACT OF THE DISCLOSURE A pasteurizable and/or cook-in shrink film is provided that includes a first or sealing layer of a nonlipophillic polymeric material having a softening point greater than that of the following shrink layer; a second or shrink controlling layer, melt bonded to the first layer, of an ethylene homopolyer or copolymer; a third or adhesive layer, melt bonded to the second layer, of a chemically modified polyethylene being irradiatively cross-linkable and having functional groups with a relative- ly strong affinity for the following barrier layer; a fourth or barrier layer, melt bonded to the third layer, of a hydrolyzed ethylene-vinyl acetate copolymer; a fifth or adhesive layer as in said third layer, melt bonded to the fourth layer; and a sixth or abuse layer, melt bonded to the fifth layer. An associated method for making the film is also pro- vided that includes full coextrusion and selective irradiation and orien- tation.

434797

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