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US 6,333,087 B1Granted
Oxygen scavenging packaging
AssigneeChevron Chemical Company
InventorsGary D. Jerdee, James P. Leonard, Ta Yen Ching, Joseph L. Goodrich, Brad D. Rodgers, Richard P. Schmidt
Life of this patent
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Abstract
Oxygen scavenging materials incorporated into or attached to a package such as a gable-top or rectangular carton, used to package foods, beverages or other oxygen sensitive materials, and thereby increase shelf-life by decreasing oxygen in the headspace of the package, and decreasing oxidation of the packaged product.
Claims27
A rigid paperboard container, the container being constructed from extrusion coated or laminated paperboard comprising:
- (a) a paperboard substrate having opposed inner and outer surfaces;
- (b) a first polymer layer coated or laminated onto the outer surface of said paperboard substrate;
- and
- (c) an inner, product contact sandwich layer comprising an oxygen barrier layer and an oxygen scavenging layer, wherein the oxygen scavenging layer comprises an oxygen scavenging polymer comprising a polymeric backbone, cyclic olefinic pendant groups, and linking groups linking the olefinic pendant groups to the polymeric backbone.
1 more element
Dependencies are inferred from the claim text.