Carton bottom sealing dies
US5588943A · kind A · utility
7Cited by
24References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D5/061
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The bottom of a paperboard container of the type suitable for consumer distribution of liquid foods such as milk and fruit juice includes an embossed concavity to reinforce the bottom against bulging under content fill pressure for improved free-standing stability. The concavity is embossed between a pair of dies having a stepped pyramid configuration. An air venting channel traverses the innermost platform of the stepped pyramid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.