Ultrasonic hot sealing method with regulation of sealing pressure
US8308881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2011 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Nov 1, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7128
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for generating a welding force and/or a welding pressure for a welding jaw, in particular a welding jaw of a cross-sealing station of a vertical tubular bag machine, in which the sealing force or a sealing parameter, which correlates with the sealing force, in particular the sealing pressure or the drive power of the drive, is predetermined by a control unit during the sealing time, such that the sealing force runs along a sealing force curve within the sealing time, such that the sealing force curve has a first relative sealing force maximum with a sealing force and at least one second relative sealing force maximum with a sealing force, such that the sealing force at the first sealing force maximum is higher than the sealing force at the second sealing force maximum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.