Closure seal for container
US5702015A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 1996 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | May 8, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2251/0093
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A seal for a container is provided with a method of manufacturing the same. The seal has a unitary pull-tab portion having with a pull-tab formed therein. A layer of polyester film preferably is secured to the unitary member over the pull-tab. A foil seal portion preferably is secured to the pull-tab portion and constructed for securing around the opening of the container. The pull-tab portion preferably is formed of a first layer of a plastic material fused to a second layer of the plastic material by extruding the one onto the other with a release layer therebetween such that an unfused portion of the first layer forms the pull-tab.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.