Paperboard container having increased rigidity and method of manufacturing thereof
US9555916B2 · kind B2 · utility
2Cited by
24References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2007 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Feb 2, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/70
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to pressed paperboard containers, such as disposable paper plates and bowls, having increased strength and rigidity, and the processes used to form such containers by the formation of non-radial pleats at outer regions of the container. The invention also provides pleats about the outer periphery that are non-linear along the length of the pleat. Such non-radial and non-linear pleats are formed by forming non-radial and non-linear scores in a blank of paperboard converted into the container geometry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.