Heat shrinkable multilayer packaging film

B - Operations – Transporting – 32 – B

Patent

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Details

18/1041, 154/138

B32B 27/08 (2006.01) B32B 27/32 (2006.01) B65D 65/40 (2006.01)

Patent

CA 1115196

ABSTRACT OF THE DISCLOSURE A heat-shrinkable multilayer film suitable for use in the packaging of a frozen poultry, includes a first outer layer comprising a blend of a propylene-ethylene copolymer having a high isotactic molecular structure with less than about 6% by weight being ethylene and having a melt flow of from about 1.5 to about 18 decigrams per minute; a (butene-1)-ethylene copolymer having a high isotactic molecular structure with less than about 10% by weight ethylene and having a melt flow of from about 0.1 to about 5.0 decigrams per minute, and a thermoplastic elastomer selected from the group consisting of ethylene-propylene copolymers and ethylene-propylene -ethylene copolymer to the (butene-1)-ethylene copolymer being from about 2:1 to about 1:2 and the thermoplastic elastomer being present from about 10% to about 50% by weight, and a second outer layer comprising an ethylene- (butene-1) copolymer having a melt flow of from about 0.1 to about 1.0 decigrams per minute, having a density of from about 0.916 to about 0.920 gram per cubic centimeter, and being a linear polymer; the multilayer film being biaxially oriented.

318963

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