Transverse direction zipper with edges unsecured
US6397561B1 · kind B1 · utility
7Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jul 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/927
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a form fill and seal apparatus, a film is provided with a zipper oriented transverse to the direction of travel of the film. The zipper includes a central area which is secured to the film. However, the zipper further includes outer areas which are free of attachment to the film prior to the film being turned down by the forming collar of the filling tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.