Machine for making bags
US7922640B2 · kind B2 · utility
0Cited by
30References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2006 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Nov 14, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A machine for making bags from sheet material of indeterminate length, especially thermoplastic material, has a pair of spaced folders of special construction for folding the material lengthwise. The entry end of the machine can be adjusted as to height. An applicator for adhesive tape can be positioned between the folders. A special construction thermowelds the folded layers together along transverse lines and severs or perforates them along those lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.