Method and device for a tight packing under a thermoplastic and thermoformable film of products requiring an absolute protection
US4164109A · kind A · utility
9Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Aug 14, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B31/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
While thermoforming an article skin-wrap packaging, the article being disposed on an air-tight supporting plate firmly applied on an evacuated chamber and a plastic film displaced parallel to the supporting plate to firmly engage the article and the supporting plate, vacuum is provided in the wrapping by means of at least one suction tube or nozzle temporarily placed between the supporting plate and the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.