Metallized film structure and method
AssigneeMobil Oil Corporation
InventorShaw-Chang Chu
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Abstract
A metallized film combination of an oriented polymeric substrate layer having on at least one surface thereof a coating of a blend of (a) a vinyl alcohol homopolymer or copolymer and (b) an ionic copolymer of ethylene and an ethylenically unsaturated monocarboxylic acid wherein at least 10% of the carboxylic acid groups are neutralized with an alkali metal ion; and the surface of said layer blend having a metal layer thereon and the method of coating the blend of (a) and (b) on the substrate after it is machine direction oriented, followed by transverse direction orientation and depositing a metal layer on the coating surface.
Claims11
A metallized film combination comprising an oriented polymer substrate layer susceptible in unmodified form of transmitting oxygen and moisture, at least one surface of which having a layer of a blend of (a) a vinyl alcohol homopolymer or copolymer and (b) an ionic copolymer of ethylene and an ethylenically unsaturated monocarboxylic acid wherein at least 10% of the carboxylic acid groups are neutralized with an alkali metal ion;
- and the surface of said layer blend having a metal layer thereon.
A method of forming a metallized film combination comprising:
- (a) providing a polymeric substrate layer susceptible in its unmodified form of transmitting oxygen and moisture;
- (b) machine direction orienting said film;
- (c) coating at least one side of said substrate layer with a blend of (1) a vinyl alcohol homopolymer or copolymer and (2) an ionic copolymer of ethylene and an ethylenically unsaturated monocarboxylic acid wherein at least 10% of the carboxylic acid groups are neutralized with a metal ion;
- (d) transverse direction orienting said film;
- and (e) depositing a metal layer on the surface of said blend.
Dependencies are inferred from the claim text.