Multilayered tubular packaging casing

  • US 5,185,189 A
  • Filed: 05/28/1991
  • Issued: 02/09/1993
  • Est. Priority Date: 05/26/1990
  • Status: Expired due to Term
First Claim
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1. A multilayered, tubular packaging casing for pasty materials having an outer layer, an intermediate layer and an inner layer wherein:

  • said outer layer comprises a polymer selected from the group consisting of an aliphatic polyamide, an aliphatic copolyamide and a polymer blend containing at least one aliphatic polyamide or aliphatic copolyamides;

    said intermediate layer comprises a polyolefin and an adhesion promoting agent, said intermediate layer having a thickness of at least about 2 microns; and

    said inner layer comprises a polymer selected from the group consisting of an aliphatic polyamide, a partially aromatic polyamide, an aliphatic copolyamide, a partially aromatic copolyamide and a polymer blend containing at least one aliphatic polyamide, partially aromatic polyamide, aliphatic copolyamide, or partially aromatic copolyamide.

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