Filling level-independent gassing

US11511896B2 · kind B2 · utility

Assignee

• Multivac Sepp Haggenmüller Se & Co. KG · DE

Inventors

• Michael Rädler · Klaus, AT
• Florian Felch · Durach, DE
• Alexander Stötzner · Kempten, DE

Key dates

• Filing date: Jun 13, 2019
• Grant date: Nov 29, 2022
• Expiry date: Jul 5, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B61/06
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method for operating a sealing station of a packaging machine, wherein the method may include one or more of the following steps: filling a packing volume of a package with a gas to create a desired atmosphere to a preset gassing target pressure for a finished package, wherein the packaging volume may be defined by a lower and an upper packaging material; discharging a partial amount of the gas introduced into the packaging volume from the packaging volume into a collection volume while retaining the packaging volume generated by the preceding filling, which reduces the pressure within the packaging volume; and reducing the packaging volume by moving the upper packaging material to an end position that corresponds to a desired appearance such that the pressure inside the package increases again to near the gassing target pressure. A sealing station that performs this method is also described.