Bag making machine
US7331917B2 · kind B2 · utility
26Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Oct 21, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S493/918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Plastic bag making apparatus by which it is arranged that even if a bottom gusset member is not specially supplied, a bottom gusset can be incorporated into a plastic bag. As continuous trunk members (1,2) are fed, they are guided by a trunk guide mechanism (16-29) and folded along a longitudinal fold line (8). Then, the folded portion (4) is folded back along a longitudinal fold-back line (10), whereby a twofold section is formed of the trunk members, with the continuous trunk members forming the trunk of the plastic bag, the twofold section forming the bottom gusset of the plastic bag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.