Container

US4091930A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Norbert Buchner · Winnenden, DE
• Werner Brose

Key dates

• Filing date: Feb 15, 1977
• Grant date: May 30, 1978
• Expiry date: Feb 15, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D2577/205
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A container made from a foil or laminate material and provided with a cover which is sealed to a flange of the container by the application of heat. In order to facilitate removal of the cover, all or all but one of the corners of the container have cuts or kerfs extending from the outer edge up to the welded bead. To open the container, the tab defined by each kerf is grasped and pulled upwardly so that the adjacent strip of cover and flange is removed by tearing along one straight side of the polygonal container. The procedure is repeated at successive sides until all or all but one of the edge strips have been removed.