Vertical form, fill and seal machine for handling large pouches
US6826892B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2003 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Jan 25, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B70/844
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A vertical pouch forming, filling and sealing machine and method for making pouches and filling same with a liquid content in the range of about 5 to 20 liters, is described. As a pouch is being filled with a liquid it descends into a support cage to restrain the pouch from ballooning out and prevents the weight of the liquid in the filled pouch from tensioning the film in the hot horizontal seal zone of the horizontal sealer. The support cage compensates for loss of surface tension of the film in the hot horizontal seal zone during the horizontal sealing cycle. The cage also has a gate section to discharge the filled pouch by gravity after the horizontal sealing cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.