WVTR film using wax in combination with a cavitated tie layer

Details WVTR film using wax in combination with a cavitated tie layer WVTR film using wax in combination with a cavitated tie layer

1997-07-16

2000-03-07

Thibodeau, Paul

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having a component wherein a constituent is liquid...

428515, 428516, 428484, 428910, 264 41, 2642902, 26417314, 26417315, B32B 326, B32B 2732

Patent

active

060337710

ABSTRACT:
A multi layer film having enhanced barrier properties with respect to oxygen and water vapor transmission is provided. The multi layer film includes a polyolefin core layer, a copolymer or terpolymer intermediate layer on at least one surface of the polyolefin core layer, with the intermediate layer having voids therein and including a wax trapped within the voids, and a surface layer on the intermediate layer. Multi layer films according to the present invention are particularly useful as packaging films for food products, and are successful in laminating, printing or coating operations.

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