Film wrapped receptacle
US4959946A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Sep 15, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D77/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A receptacle for food products and the like is provided. A plastic film is tightly wrapped about a preformed package such as a tray containing wet food products. The film defines a pair of opposing flaps and an area of overlapping film portions extending between the flaps and adjacent to the bottom surface of the tray. Heat and pressure are applied to the wrapping at the bottom surface of the tray to provide a flat, sealed film surface. A strip of adhesive tape is applied to the flat film surface, thereby connecting the opposing flaps and providing a seal over the seam defined by the overlapping film portions. The tape is then heated to cause the adhesive to flow, thereby improving the seal. The wrapping is prevented from moving from its original position by the tape and is accordingly substantially leak-proof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.