Multilayered polyamide-based synthetic sausage casing
AssigneeHoechst Aktiengesellschaft
InventorsKarl Stenger, Guenther Crass, Dieter Beissel
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Abstract
A multi-layered tubular synthetic sausage casing which includes an outer polyamide layer, an inner polyolefin layer and an intermediate layer for mutually bonding the inner and outer layers. The inner polyolefin layer includes a copolymer comprised of units of ethylene, propylene or straight-chain alpha-olefins having 4 to 8 carbon atoms, or of a mixture of these copolymers. In a preferred embodiment, the polyolefin layer is comprised of an ethylene/propylene/butylene terpolymer and/or of a propylene/butylene copolymer.
Claims19
A coextruded biaxially stretched, heat set, synthetic multilayered sausage casing comprising an outer layer comprised of polyamide, an inner polyolefin layer and an intermediate layer for mutually bonding said inner and outer layers, wherein said inner polyolefin layer comprises at least one polyolefin copolymer which includes units selected from at least two of the group consisting of ethylene, propylene and straight-chain alpha-olefins having 4 to 8 carbon atoms, wherein said inner polyolefin layer is not corona-treated.
Dependencies are inferred from the claim text.