Multi-layer film containing a layer of crosslinked...

Details Multi-layer film containing a layer of crosslinked... Multi-layer film containing a layer of crosslinked...

B - Operations, Transporting

32

B

117/204, 18/783,

B32B 27/08 (2006.01) B29C 61/06 (2006.01) B32B 37/20 (2006.01) C08J 7/12 (2006.01)

Patent

CA 1133370

MULTI-LAYER FILM CONTAINING A LAYER OF CROSSLINKED ETHYLENE/VINYL ALCOHOL COPOLYMER ABSTRACT A multi-layer film having a crosslinked layer of an olefin vinyl alcohol copolymer is produced by providing a substrate layer and a layer of a copolymer of an olefin and a vinyl ester. The multi-layer structure is crosslinked preferably by irradiation and then hydrolyzed to convert the olefin/vinyl ester copolymer into a copolymer of the olefin and vinyl alcohol. The thus produced structure may be incorporated into a further film combination by extrusion coating additional layers. The multi-layer structure may be oriented to produce a heat shrinkable film for use as a packaging material.

332575

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