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Multiple layer packaging films and packages formed thereof

  • US 4,910,085 A
  • Filed: 10/11/1988
  • Issued: 03/20/1990
  • Est. Priority Date: 11/29/1985
  • Status: Expired due to Term
First Claim
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1. A multiple layer film, comprising:

  • (a) a first layer, the composition of said first layer being selected from the group consisting of polyesters, copolyesters, polycarbonates, and polyether block amide copolymers;

    (b) a second sealant layer comprising (i) a first component of a polypropylene and (ii) a second component of a styrene ethylene butylene styrene copolymer; and

    (c) a third adhesive layer adhering said first layer to said second layer, said third layer being positioned between said first and second layers, and in surface-to-surface contact with said first layer, the composition of said third adhesive layer comprising a carboxy modified propylene.

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