Multilayered tubular packaging casing
DCFirst 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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Abstract
A polyamide-based multilayered tubular packaging casing for pasty matter, in particular a synthetic sausage casing, is disclosed having an outer layer comprised of aliphatic polyamide, aliphatic copolyamide or a polymer blend comprising at least one of these compounds, an intermediate layer that is impermeable to water vapor and comprised of a polyolefin and an adhesion-promoting agent, and an inner layer that is preferably impermeable to oxygen and comprised of aliphatic and/or partially aromatic polyamides and/or aliphatic and/or partially aromatic copolyamides.
113 Citations
32 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification