Method of manufacturing a standup bag
US6695757B2 · kind B2 · utility
73Cited by
26References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Dec 20, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A standup bags made of a flexible material and methods of producing these standup bags. In particular, the standup bags have at least one substantially flat surface which is free of seams and folds. When the bag is filled with a flowable substance, the pressure exerted by the fluid upon the flat surfaces allows the bag to be self-standing. Additionally, the standup includes at least one contour structure that defines the geometry of the bag and also contributes to the standup bag's ability to be self-standing when even partially filled with a flowable substance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.