Heat shrinkable multi-layer film of hydrolyzed ethylene vinyl ac

Details Heat shrinkable multi-layer film of hydrolyzed ethylene vinyl ac Heat shrinkable multi-layer film of hydrolyzed ethylene vinyl ac

1975-10-02

1977-12-20

Ives, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428515, 428 36, 428516, 428520, 428522, 156229, 156244, 427385B, 427 36, 264181, B65D 1100, B65D 3500

Patent

active

040642968

ABSTRACT:
A heat shrinkable multi-layer packaging film having a layer of a hydrolyzed ethylene-vinyl acetate copolymer. Preferably, the film is formed by coextruding the hydrolyzed ethylene-vinyl acetate copolymer layer between two other polymeric layers, at least one of which is cross-linkable, and thereafter irradiating and orienting the multi-layer structure. The resulting film is heat shrinkable and has very low oxygen permeability.

REFERENCES:
patent: 2543229 (1951-02-01), Chapman
patent: 3285766 (1966-11-01), Barkis et al.
patent: 3519531 (1970-07-01), James et al.
patent: 3595740 (1971-07-01), Gerow
patent: 3741253 (1973-06-01), Brax et al.
patent: 3817821 (1974-06-01), Gallini
patent: 3932692 (1976-01-01), Hirata et al.

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