High oxygen barrier film

Details High oxygen barrier film High oxygen barrier film

1988-04-22

1991-10-29

Sluby, P. C.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 354, 428349, 428516, 428518, 2641761, 206484, 53484, B29D 2200, B32B 2708, B65D 8572

Patent

active

050615343

ABSTRACT:
Packaging films, and packages made with those films which have reduced sensitivity to humidity. The films include a first layer comprising an EVOH copolymer and a second layer comprising a vinylidene chloride copolymer. Packages made with the vinylidene chloride copolymer layer between the low ethylene content EVOH copolymer and the contained product provide high oxygen barrier properties under both high and low humidity conditions. At high humidity conditions, the oxygen barrier properties of the package are provided by the vinylidene chloride copolymer. At lower humidity conditions, the packaging material provides the superior oxygen barrier properties of the EVOH. So the packages of the invention provide superior oxygen barrier properties of the low ethylene content EVOH at lower humidities. But the oxygen barrier properties of the package are never less than those provided by the vinylidene chloride copolymer, even at high humidity conditions.

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