Duplex bag
US7340870B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | May 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/927
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing double ply packaging bags includes feeding a first packaging web, the first packaging web including a window patch that is cut out or pre-cut, feeding a second packaging web, the second packaging web including another window patch that is cut out or pre-cut, applying a fastener assembly to a fed-through packaging web, perpendicular to a window patch, attaching the fastener assembly to the packaging web, attaching the two packaging webs to each other to form a double ply web, and forming a double ply packaging bag with the double ply web. The double ply packaging bag has a front wall and a back wall, where the front wall and the back wall are each formed by the double ply web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.