Method for preventing bulge of liquid packaging
US5975158A · kind A · utility
6Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1998 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 10, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65B43/54
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for preventing bulges in liquid packaging. Disclosed is a mechanical process for squeezing the carton during the carton sealing process. When sealed, a partial vacuum is created, thus making the filled and sealed carton side walls concave. Over an extended period of time, the vacuum will release to the point of having a straight wall carton.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.