Zipper construction for enhanced sealing
US7540072B2 · kind B2 · utility
4Cited by
9References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2006 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jun 26, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T24/45168
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The use of coextruded or integral sealing ribs on zipper flanges enhances the quality of the sealing between the flanges and the walls of a reclosable package. The coextruded sealing ribs may be made from sealing resins or similar materials. Additionally, grip strips are placed on the opposite side of the flanges from the ribs in order to improve the quality of the sealing even further and to inhibit inner flange sealing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.