Method of vacuum packaging compressible materials and apparatus
US4016707A · kind A · utility
10Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 3, 1976 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Mar 3, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B1/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of vacuum packaging compressible material in a sealed flexible fluid impervious container, such as a poly bag, is disclosed. One or more slits are made in the container and air in the container is withdrawn through the slits. This creates a partial vacuum in the container that results in compression of the compressible material. When the desired compression has been obtained, restraining means are placed around the flexible container to maintain the package in a compressed state when the partial vacuum is eventually lost. A novel apparatus for use in this method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.