Multilayered tubular packaging casing
AssigneeHoechst Aktiengesellschaft
InventorsKarl Stenger, Marliese Saal
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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.
Claims32
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.
Dependencies are inferred from the claim text.