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High barrier film

  • US 5,591,520 A
  • Filed: 04/28/1995
  • Issued: 01/07/1997
  • Est. Priority Date: 12/11/1991
  • Status: Expired due to Fees
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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