Container lid with an opener device

US4513876A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventor

• Norbert Buchner · Winnenden, DE

Key dates

• Filing date: Jun 13, 1984
• Grant date: Apr 30, 1985
• Expiry date: Jun 13, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D5/706
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A lid for a packaging container including an easy opening tear-open part which is surrounded by a weakened line. The lid is molded from a compound material, which has an outer carrier layer of plastic, a middle barrier layer of metal foil and an inner heat-sealing layer of a thermoplastic material. In order to facilitate the initial tear of the tear-open part, the middle barrier layer is also thinned or ruptured at least in the starting segment in a location coinciding with the weakening line in the carrier layer.