Packaging bag
US7887473B2 · kind B2 · utility
5Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2009 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Aug 20, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2170/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a packaging bag includes steps of: preparing a sheet of rectangular film material; forming a bag body from the sheet of the rectangular film material; preparing a shaping member; preparing and attaching a fastener; forming a vertical sealing portion; forming the bottom surface portion so as to include a lower end seal portion; a triangular folded portion; and a flat surface folding portion; and forming the lower sealing portion so as to include a central sealing portion; and a side sealing portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.