Disposable food container with a linear sidewall profile and an arcuate outer flange
US6715630B2 · kind B2 · utility
78Cited by
44References
182Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2003 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Jan 21, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to rigid disposable food containers provided with a relatively steep sidewall with a generally linear profile and an outwardly flared arcuate flange portion. The containers are further characterized by a flange outer vertical drop wherein the ratio of the length of the vertical drop to the characteristic diameter of the container is greater than about 0.01. By virtue of unique geometry, the containers of the invention exhibit improved rigidity and/or rim stiffness yet have favorable runnability in pressware manufacturing systems characteristic of plates of lower strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.