US 9,681,674 B2 · Method and device for welding casings

Abstract

The invention relates to a device (1) for producing a case having a large length for food, in particular for sausages, from a plurality of individual case sections made of casings that contain collagens, such as natural casings or collagen-containing artificial casings, comprising a mandrel (2) and at least two sleeve sections (3), wherein the sleeve sections (3), in order to create an overlapping area (4), are pushed over the mandrel (2) and arranged such as to overlap each other, a heating element (5) for temporarily exchanging heat between the heating element (5) and the overlapping area (4), such that the case sections are at least partially welded to each other in the overlapping area (4), a deformable extension body (6), wherein the deformable extension body annularly surrounds the mandrel (2) and is arranged inside the case sections (3), wherein the deformable extension body (6) is made of an elastically deformable material, and a mold (7) that encloses the mandrel (2) in some sections.

Claims20

Dependent claims

Method for the production of a sheath having a greater length, for foods, from a plurality of individual sheath sections composed of casings that contain collagens, comprising the steps of

pushing sheath sections onto a mandrel, one after the other, wherein two end regions of consecutive sheath sections that face one another overlap on the mandrel and form an overlapping region of sheath sections,
simultaneously applying heat and pressure temporarily to the overlapping region of the two sheath sections, so that the sheath sections are welded to one another, at least in part, in the overlapping region, wherein the overlapping region of the two sheath sections is positioned above a deformable expansion body, wherein the expansion body is enlarged, before or during the welding process of the overlapping region, from its starting diameter to its end diameter, which corresponds to the maximal casing caliber,
and thereby enlarging the overlapping region also in its diameter, and after the welding process, moving the expansion body back to its starting diameter, wherein before heat and pressure are applied, water is pressed out of the overlapping sheath sections of the casing.

Apparatus (1) for the production of a sheath having a greater length, for foods from a plurality of individual sheath sections composed of casings that contain collagens, comprising

a mandrel (2) and at least two sheath sections (3), wherein the sheath sections (3) are pushed on over the mandrel (2) in order to create an overlapping region (4), and disposed overlapping one another, and
having a heating element (5) for temporary exchange of heat between heating element (5) and the overlapping region (4), so that the sheath sections are welded to one another, at least in part, in the overlapping region (4), and a controller which is programmed to energize the heating element (5) only after water is pressed out of the overlapping region (4), and
having a deformable expansion body (6), wherein this body is configured to surround the mandrel (2) in the manner of a ring, and is disposed within the sheath sections (3), wherein the deformable expansion body (6) is configured to comprise an elastically deformable material, and
having a tool mold (7) that encloses the mandrel (2) in certain sections, wherein a heating wire or foil is provided as a heating element (5), wherein the heating element (5) is disposed between the tool mold (7) and the overlapping region (4)
wherein the tool mold (7) is configured to form the sheath sections (3), divided with a gap (29).

2 more elements

Dependencies are inferred from the claim text.

Method and device for welding casings

Life of this patent

Method and device for welding casings

Life of this patent

Abstract

Claims20