Method and apparatus for making flat bottom bags
US6886313B2 · kind B2 · utility
23Cited by
39References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Feb 13, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D75/008
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A flat bottom bag or flexible package, and method for manufacturing same, constructed by modification to existing vertical form and fill packaging machines. The invention involves producing a flat bottom bag from a single sheet of packaging film by creating two vertical creases along opposite sides of a packaging film tube prior to forming a transverse seal on the tube. These creases are formed using fixed or stationary modifications to prior art vertical form, fill, and seal machines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.