Methods of making reclosable packages for vacuum, pressure and/or liquid containment
US7527585B2 · kind B2 · utility
10Cited by
23References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2005 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Nov 17, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B70/8132
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing flexible containers that are hermetically resealable. Each resealable container comprises a receptacle and a pair of plastic zipper strips. The zipper strips are flattened at the ends within the side seal regions and are joined to each other, without substantial deformation of the closure profiles, in respective transition areas substantially contiguous with the side seals. These transition areas of zipper strip joinder assist in providing a leakproof transition from the openable section of the zipper to the side seals, where the closure profiles are fused and flattened (i.e., crushed).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.