Container having a preshaped end closure
US6478218B1 · kind B1 · utility
6Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Oct 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00796
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tubular container for vacuum packaging products is provided according to the present invention that includes an overcap secured to at least one of the opposed ends of a tubular container that defines a bias member for biasing a membrane-type flexible lid inwardly towards products contained within the tubular container before a vacuum is applied. The flexible lid is maintained in a biased shape until the bias member is removed. As such, the flexible lid is sufficiently restrained during the vacuum packaging process, thus preventing the breakage of products located adjacent the flexible lid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.