Dual drum configuration for transverse direction application of zippers
US7563219B2 · kind B2 · utility
1Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Jul 18, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/927
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A drum configuration uses first and second rotary drums to apply alternate zipper segments in a transverse direction to a sheet of moving web or film. This allows the web to maintain a constant speed without the intermittent pausing while the zipper segments are sealed to the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.