Moisutre barrier film

Details Moisutre barrier film Moisutre barrier film

1993-09-10

1996-01-09

Buffalow, Edith

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428516, 428521, B32B 712

Patent

active

054827710

ABSTRACT:
A multiple layer film useful in moisture barrier packaging applications has at least one layer comprising a blend of propylene polymer or copolymer, and a hydrocarbon resin; and two additional layers comprising a propylene polymer or copolymer, ethylene alpha olefin copolymer, ionomer, polybutene, or blends thereof. A core layer of ethylene vinyl alcohol copolymer or other oxygen barrier material, or high density polyethylene, can be included in some embodiments. A preferred embodiment of the multi-layer film exhibits excellent moisture barrier and optical properties, and shrink properties as well if the film has been oriented. High oxygen barrier is also a feature in embodiments including EVOH or other oxygen barrier materials.

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