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US 5,330,831 AGranted
Printable high barrier multilayer film
AssigneeMobil Oil Corporation
InventorsAnthony R. Knoerzer, Leland W. Reid
Life of this patent
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Abstract
A film combination includes (a) an oriented polymeric substrate which in its unmodified state is susceptible of transmitting oxygen and water vapor; (b) a primer coating on the substrate; (c) a layer of cross-linked polyvinyl alcohol on the primer layer; and (d) on the cross-linked layer a layer of a blend of (1) a polyvinyl alcohol homo or copolymer and (2) an ethylene-acrylic acid copolymer.
Claims7
A film combination comprising:
- (a) an oriented polymeric substrate which in its unmodified state is susceptible of transmitting oxygen and water vapor in an amount which is detrimental to product packaged by said substrate;
- (b) a primer coating on at least one surface of said substrate (a);
- (c) a layer of cross-linked polyvinyl alcohol on said coating (b);
- and
- (d) on said cross-linked layer a layer of a blend of (1) a polyvinyl alcohol homo or copolymer and (2) an ethylene-acrylic acid copolymer.
2 more elements
Dependencies are inferred from the claim text.