Method and apparatus for forming a notched hinge connection in a thermoformed container
US9340350B2 · kind B2 · utility
21Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Aug 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7168
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for forming a hinge in a thermoformed container, such as an egg carton, and the resulting container. The hinge is formed in the mold, by severing a thermoformed container along the length of a hinge line, with the exception of plurality of spaced connecting membranes that are not severed. The alternating severed portions and connecting membranes are referred to herein as a notched hinge connection. The width, depth, and location of the connecting membranes can be adjusted so the hinge area is strong enough to withstand multiple openings during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.