Two-ply sealing element punched out in a cover shape
US7789262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2005 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Dec 14, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2581/3437
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An element which is punched out in a cover shape for sealing of containers, includes two plies with at least one opening aid which is integrated within these plies, the ply (3) located in the direction of the container having a plastic layer which is provided with perforations or scoring. The layers of the sealing element are cemented by a peelable adhesive layer, the opening aid and the ply which has the plastic layer being free of adhesive in the area of its perforations or scoring. The sealing element enables not only facilitated sealing of food containers, such as microwave containers, since mutual displacement or slippage of the individual plies due to the adhesive layer is prevented, but that any type of penetration of adhesive into the food container, thus into the food, is prevented in any case by the peelability of the adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.