Method of preparing zipper for use in reclosable gusset bags
US6821238B2 · kind B2 · utility
8Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2000 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Sep 15, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/927
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The profiles of a segment of profile zipper are separated and then the profiles at the central portion of the segment are rejoined while the profiles at the ends of the segment are maintained separated. The segment is transported to overlie a bag film web transverse to a moving direction of the web and attached to the web. The web is formed into a reclosable bag with side wall gusset portions of web tucked between the separated profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.