Method of producing mutliwall plastic bags, especially tie bags
US6416452B1 · kind B1 · utility
19Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1999 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Oct 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/922
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of making multiwall plastic bags wherein half-width foil webs are unwound from respective rolls below a segment of a path within which a multilayer full-width web is guided. The half-width webs can be slit and unfolded or simply unfolded to form full-width single-layer webs which are combined by superimposition to form the multilayer full-width web. The latter is folded and the folded multilayer width is formed into the bags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.