High barrier film
First Claim
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1. A stretched multi-layer oxygen gas barrier film combination comprising in the following order:
- (a) a base layer of polypropylene homopolymer or copolymer at least one surface thereof comprising a maleic acid anhydride modified polypropylene homopolymer or copolymer;
(b) a skin layer of an amorphous polyamide directly bonded on said at least one surface comprising a maleic acid anhydride modified polypropylene homopolymer or copolymer; and
(c) a vacuum metallized layer on said polyamide skin layer.
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Abstract
An oriented film combination of (a) a base layer of polypropylene at least one surface of which comprises a maleic acid anhydride modified polypropylene; and (b) on at least one surface, a skin layer of an amorphous polyamide or a blend of an amorphous polyamide and a semicrystalline polyamide.
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Citations
6 Claims
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1. A stretched multi-layer oxygen gas barrier film combination comprising in the following order:
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(a) a base layer of polypropylene homopolymer or copolymer at least one surface thereof comprising a maleic acid anhydride modified polypropylene homopolymer or copolymer; (b) a skin layer of an amorphous polyamide directly bonded on said at least one surface comprising a maleic acid anhydride modified polypropylene homopolymer or copolymer; and (c) a vacuum metallized layer on said polyamide skin layer. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification