Vacuum packaging bulk commodities
US4132048A · kind A · utility
28Cited by
7References
8Claims
0Family size
Inventor
Key dates
| Filing date | Mar 28, 1977 |
| Grant date | Jan 2, 1979 |
| Priority date | — |
| Expiry date | Mar 28, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/024
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A process for packaging bulk commodities such as meat comprises vacuum sealing the commodity into a bag of plastics material and then causing the material of the bag to expand by a further reduction in pressure of the environment surrounding the bag. The material expands into contact with heaters which heat the material and when the environment surrounding the bag is returned to normal pressure, the material closely encloses the commodity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.