Method for tightness control of a filling-sealing unit for containers, and filling-sealing machine

US11247888B2 · kind B2 · utility

Assignee

• KRONES AG · DE

Inventors

• Josef Knott · Schierling, DE
• Florian Habersetzer · Regensburg, DE

Key dates

• Filing date: Apr 19, 2018
• Grant date: Feb 15, 2022
• Expiry date: Aug 12, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B67C2007/0066
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A method for tightness control of a filling-sealing unit (1) for containers (9) is described. According thereto, a pressure chamber formed at the filling-sealing unit is sealed by way of a first seal around a sealer that is movable therein and by way of a second seal around a pressure supply that is movable therein. According to the invention, a third seal formed for sealing the pressure chamber around a container neck finish is sealed from the outside with an attachment, a positive pressure and/or negative pressure is generated in the pressure chamber, the pressure line used for this purpose is closed, and then a pressure profile in the pressure chamber is measured. This allows a leakage to be selectively detected at the first and/or second seal and be distinguished from a leak at the third seal.