Metallized polymeric films

Details Metallized polymeric films Metallized polymeric films

2006-09-15

2011-11-01

Jackson, Monique (Department: 1787)

Stock material or miscellaneous articles

Composite

Of metal

C428S457000

Reexamination Certificate

active

08048532

ABSTRACT:
Disclosed herein is an improved, metallized polymer film and method for preparing the same. Such films comprise a) at least one treated polymeric skin layer comprising butylene, and b) a metal layer deposited onto at least one surface of this polymeric skin layer. The polymeric skin layer can comprise a propylene-butylene copolymer or an ethylene-propylene-butylene terpolymer, with this copolymer or terpolymer containing from about 4 wt % to about 12 wt % of butylene. The polymeric skin layer is preferably preconditioned by subjecting an outermost surface thereof to plasma treatment which facilitates the deposition thereon of a strongly adhering metal layer which is preferably aluminum. The resulting multi-layer films exhibit metal adhesion bond strength of at least about 100 grams/25 mm. These films will preferably also exhibit a Water Vapor Transmission Rate of from about 0.05 to about 0.2 g/m2/24 hour, and an Oxygen Transmission Rate of from about 5.0 to about 20 cm3/m2/24 hour.

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“Improved Barrier Properties with Metallized Films from Corona Process Improvements and From Copolymer Characteristics”, R. Neil Campbell and Detlef Wolters, Polymers, Laminations & Coating Conference, Aug. 30-Sep. 3, 1998, San Francisco, CA, pp. 385-396.

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