Process and apparatus for gas purging of a bag being formed, filled and sealed on a bagging machine
US4769974A · kind A · utility
37Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/045
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
For a form, fill and seal bagging machine a process and apparatus are provided whereby simultaneous with product discharged into the interior of the bag during the filling segment of the form, fill and seal cycle, a gas is also discharged into the interior of the bag to purge the interior of the bag and further, a low pressure area is created within the interior of the bag to remove excess purging gas and/or condensing fluids from the interior of the bag prior to sealing the bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.