High barrier flexible packaging structure

Details High barrier flexible packaging structure High barrier flexible packaging structure

2007-08-07

2007-08-07

Nakarani, D. S. (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

C428S337000, C428S451000, C428S458000, C428S461000, C428S463000, C428S475800, C428S476300, C428S483000, C428S520000

Reexamination Certificate

active

10684595

ABSTRACT:
The invention relates to a high oxygen barrier, multilayer flexible packaging structure having a vacuum metallized, biaxially oriented polypropylene (met-BOPP) or metallized polyester (met-PET) film substrate; a high barrier EVOH layer coextruded or laminated directly on the metal-containing layer; and optionally an adjacent layer of anhydride modified polyolefin such as blend of LDPE, or MDPE, or PP and maleic anhydride modified adhesive resin on the EVOH layer.

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Moosheimer et al., “Permeation of Oxygen Moisture Through Vacuum Web Coated Films,” 42ndAnnual Technical Conference Proceedings408-414. Year: 1999.

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