Biaxially stretched five-layer film and method for...

Details Biaxially stretched five-layer film and method for... Biaxially stretched five-layer film and method for...

B - Operations, Transporting

29

C

154/140, 18/783

B29C 47/06 (2006.01) B29C 47/00 (2006.01) B32B 27/08 (2006.01)

Patent

CA 1100730

Abstract of the Disclosure A biaxially stretched five-layer film suitable for packaging fatty foodstuffs of irregular shape is disclosed. The film has a first (outermost) layer made of an ionomer, an olefin homopolymer, an olefin copolymer or a mixture of the olefin homopolymer with the olefin copolymer; a second layer of an ethylene copolymer; a third layer of a vinylidene copolymer; a fourth layer of an ethylene copolymer; and a fifth (innermost) layer of an ionomer. This film is obtained by preparing a laminate consisting of the layers of respective resins mentioned above by means of a specific die designed for multi-layer tubular molding and biaxially stretching the laminate under specific conditions. A film which has excellent properties for the packaging of fatty foodstuffs can thus be produced.

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