Tubular casing with glued seam and its manufacture and use for curved or ring-shaped sausages
AssigneeHoechst Aktiengesellschaft
InventorsKlaus Andra, Elfriede Hutschenreuter, Herbert Porrmann
Life of this patent
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Abstract
A tubular casing for foodstuffs, in particular sausages, comprising a web (4) which is curved along its longitudinal axis and having its longitudinal edge regions (1, 2) bonded by a glued seam. The edge regions (1,2) meet or overlap and are bonded with a strip of film (6). The strip of film (6) comprises a material which is capable of shrinking in the direction of its longitudinal axis at a temperature between about 60.degree. to 100.degree. C. A pressure-sensitive adhesive is used for the bonding. The tubular casing carries an adhesion-promoting layer (5) on the surface adjacent to the adhesive layer (3). Heating the filled casing gives it a curved form.
Claims18
A tubular casing suitable for containing foodstuffs, comprising:
- a web of material comprising a naturally occurring polymer, said web being curved about its longitudinal axis in such a manner that its two longitudinal edge regions are positioned to form a seam;
- a layer of a substantially water-insoluble adhesion-promoting resin covering at least one of the inside and outside surfaces of said web in at least the area of said two edge regions;
- a strip of film applied to said longitudinal edge regions forming the seam, said strip of film comprising a material capable of shrinking predominantly in the direction of its longitudinal axis upon the application of heat;
- and
- a layer of a pressure-sensitive adhesive interposed between said strip of film and each edge region of said web material, whereby the seam is sealed by said strip of film via said layer of pressure-sensitive adhesive and said layer of adhesion-promoting resin.
Dependencies are inferred from the claim text.