Polyester film having improved oxygen barrier, comprising...

Details Polyester film having improved oxygen barrier, comprising... Polyester film having improved oxygen barrier, comprising...

2006-02-28

2006-02-28

Chen, Vivian (Department: 1773)

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

C428S141000, C428S474400, C428S475200, C428S475500, C428S475800, C428S476300, C428S480000, C428S483000, C428S910000, C525S056000, C525S057000, C525S060000, C525S221000, C264S288400, C264S289300, C264S290200, C264S289600, C427S384000, C427S385500, C427S393500

Reexamination Certificate

active

07005169

ABSTRACT:
Biaxially oriented polyester films which have a polyester-containing base layer (B) which additionally comprises poly(m-xyleneadipamide) and has been provided on at least one side with an overlayer (A) which has been coated with a barrier layer (D), said barrier layer comprising polyvinyl alcohol and a copolymer of maleic acid and acrylic acid, feature improved optical properties such as high gloss and low opacity and very good barrier properties, in particular toward the passage of oxygen, and, as a consequence of their insensitivity toward moisture, are suitable as a packaging material for foods or other consumable items.

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