Plastic bag making apparatus
US6561963B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | May 13, 2003 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2170/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus is arranged to successively make plastic bags each of which includes two layers of panel portion superposed to define aligned top edges, first and second side edges and bottom edges. The plastic bag further includes a first side gusset portion disposed between and extending along the first side edges, a second side gusset portion disposed between and extending along the second side edges, and a bottom gusset portion disposed between and extending along the bottom edges. The apparatus comprises feeding means for feeding a main material intermittently for a length along a feeding path. The main material comprises the layers of panel portion and the first and second side gusset portions continuing longitudinally thereof respectively, the feeding means feeding the main material longitudinally of the layers of panel portion and the first and second side gusset portions. The apparatus further comprises cutting means disposed at a position predetermined along the feeding path for cutting one of the layers of panel portion as well as the first and second side gusset portions widthwise of the main material and leaving the other layer of panel portion continuing, to form an open…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.