Puncture resistant, heat-shrinkable films containing very low de

Details Puncture resistant, heat-shrinkable films containing very low de Puncture resistant, heat-shrinkable films containing very low de

1987-04-24

1989-09-05

Robinson, Ellis P.

Stock material or miscellaneous articles

Hollow or container type article

Shrinkable or shrunk

428516, 428518, 428520, 428910, 428913, 428 351, 5263481, 5263482, 5263486, B32B 2708, C08F21004, C08F21014

Patent

active

048637696

ABSTRACT:
Heat-shrinkable films suitable for packaging food articles such as frozen poultry, primal meat cuts, and processed meat products. In one embodiment, the film may be a biaxially stretched monolayer film of a very low density polyethylene copolymer. In another embodiment, the film may be a biaxially stretched multilayer film comprising a first outer layer of an ethylene-vinyl acetate copolymer, a core layer of a barrier film such as a polyvinylidene chloride copolymer or an ethylene-vinyl alcohol copolymer, and a second outer layer comprising a blend of an ethylene-vinyl acetate copolymer and a very low density polyethylene copolymer. The multilayer film is preferably made by coextrusion of the layers. The films for fabricated into bags useful for the aforementioned purposes. The bags have improved toughness.

REFERENCES:
patent: 4424243 (1984-01-01), Nishimoto et al.
patent: 4429079 (1984-01-01), Shibata
patent: 4456646 (1984-06-01), Nishimoto et al.
patent: 4617241 (1986-10-01), Mueller
patent: 4640856 (1987-02-01), Furguson et al.
patent: 4668752 (1987-05-01), Tominari et al.
Introducing VLOPE, Plastics Technology, Sep. 1984.

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