Method and apparatus for vacuum packaging
US5386678A · kind A · utility
16Cited by
11References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 12, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Jul 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/022
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The track for a pressure chamber overlaps the track for a clamper in movement while clamping a bag filled with an article, at a position beneath the latter track and with a level difference. The bag supported by the clamper is held, at its upper edge positioned right below the clamper, between the upper side of a chamber body of the pressure chamber and the upper side of a cover and in a sealed condition. The air in the bag is expelled through a notched line formed in an upper portion of the bag as the pressure within the pressure chamber is reduced, and then the bag is sealed at a position below the notched line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.