Method and apparatus for making reclosable plastic bags using a pre-applied slider-operated fastener
US6871473B1 · kind B1 · utility
53Cited by
147References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2000 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Aug 10, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49782
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for making reclosable plastic bags is provided. In the method and apparatus, a fastener is attached to a moving flat web of plastic film, preferably in the direction of web movement and near the center of the web. A plurality of sliders are mounted to the fastener either before or after the fastener is attached to the flat web, but prior to conveying the web to a FFS machine. The flat web, with the slider-operated fastener already attached thereto, is then conveyed to a vertical or horizontal FFS machine where the flat web is formed into bags, and the bags are successively filled and sealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.