Abstract: A process and device forms a sleeve from a flat, rectangular blank by winding the blank around a mandrel after it has been clamped to the mandrel surface and where the clamp passes under a presser member due to the lifting of the presser member by the action of a cam. The sleeve is permanently formed by a sealing of the blank edges upon the mandrel by a sealing member.
Type:
Grant
Filed:
April 14, 1980
Date of Patent:
June 15, 1982
Assignees:
Maschinenfabrik Rissen GmbH, 4P Nicolaus Kempten GmbH
Abstract: A cover for containers made of stiffened deformable material, for example from cardboard, has an annular rim and a plate having a depending flange. The rim has an upper portion, an intermediate portion and a lower portion. The depending flange is positioned adjacent to the intermediate portion. The lower portion is folded around the lower edge of the depending flange and pressed thereto. A three-layer structure of the downwardly extended lower rim insertable into the container provides a highly rigid cover.
Type:
Grant
Filed:
June 19, 1980
Date of Patent:
July 28, 1981
Assignees:
Maschinenfabrik Rissen GmbH, 4P Nicolaus Kempten GmbH