Valve bag and method and system for producing a valve bag

US11401076B2 · kind B2 · utility

Assignee

• Windmöller & Hölscher KG · DE

Inventors

• Andreas Lamkemeyer · Lengerich, DE
• Michael Jung · Frankfurt am Main, DE
• Uwe Kohn · Lengerich, DE
• Jakob Derksen · Lengerich, DE
• Andreas Kleemann · Weißensee, DE

Key dates

• Filing date: Sep 27, 2017
• Grant date: Aug 2, 2022
• Expiry date: Sep 27, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B1/18
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a valve bag, in particular a cross-bottom valve bag, comprising a first wall and a second wall, which are joined to each other by means of side edges or side folds and by means of bottoms and which delimit a bag interior, comprising a valve, which is arranged in one of the bottoms and via which the bag interior can be filled with a filling material, and comprising venting openings in the first and/or in the second wall for venting the bag interior. At least one channel is provided on the outside of at least one wall, which channel covers the venting openings and is formed at least by two parallel fastening strips and by a cover strip, the cover strip likewise comprising venting openings, and wherein the shortest path between the parallel fastening strips along the cover strip is longer than the shortest path along the at least one wall or the cover strip, and/or the parallel fastening strips consist of stretchable material.