Laminate for producing packaging containers

US5553942A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Klaus Domke · Ditzingen, DE
• Herbert Stotkiewitz · Bietigheim-Bissingen, DE
• Guenther Voegele · Schenefeld, DE
• Bernd Neugart · Leutenbach, DE
• Mathias Duelfer · Winnenden, DE
• Jelco Klimaschewski · Fellbach, DE
• Daniel Schulz · Baden-Baden, DE
• Michael Eidher · Welzheim, DE

Key dates

• Filing date: Mar 13, 1995
• Grant date: Sep 10, 1996
• Expiry date: Mar 13, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65D77/225
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A packaging container comprises a foil laminate comprising at least two layers in which openings are formed. The two layers are joined together over their entire surface area, except for in a striplike channel. A valve strip is disposed in the channel and in valvelike fashion covers the openings of the inner layer. If there is an overpressure in the packaging container resultant gas can escape into the open through the openings and the valve strip acts like an overpressure valve. As a result of the specialized disposition and embodiment of the valve strip and of the openings, a reliable escape of gas produced is achieved.