5-layered coextruded biaxially stretched tubular film having at least 3 polyamide layers
AssigneeWolff Walsrode AG
InventorsMichael H. von Widdern, Gunter Weber
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Abstract
This invention relates to a coextruded, biaxially stretched tubular film for durable and crease-free casings for processed meat products which are heat treated after the filling process.
Claims13
A coextruded, seamless tubular film which consists of at least five layers and is biaxially stretched at an overall stretching ratio of >=6 for use as a casing for ham or sausages to be cooked or boiled, containing at least three layers which consist predominantly of aliphatic polyamide and form the core layer, the inner layer and the outer layer, and layers between the polyamide layers consisting predominantly of polymers or copolymers based on ethylene or propylene, wherein one of the intermediate layers can consist predominantly of an ethylene/vinyl alcohol copolymer.
Dependencies are inferred from the claim text.