Plastics material packaging for long-term storage of food
US5797510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Mar 11, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00842
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Plastics material packaging includes a receptacle having a bottom and a sidewall which present an annular rim around its edge remote from the bottom, said rim providing an area for sealing a closure membrane, and the packaging further includes a cover applied to the receptacle over said membrane which it encloses. The cover is secured to the receptacle by a permanent connection that can be disconnected when the packaging is opened only by being broken, which connection is advantageously constituted by a discrete number of breakable tampering indicators. The invention also provides a method of manufacturing such packaging for long-term storage of food.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.