Method for improved container internal raw edge protection
US4931031A · kind A · utility
26Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2110/35
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of forming a skived edge on the inside panel of a thermoplastic coated paperboard container, in part while the container is part of a web or sheet of paperboard material, and in part on individual blanks after being cut from the web or sheet. More specifically, a partial depth cut and an adjacent score line are formed on a carton converting machine providing a precise location for subsequently removing material and folding the edge of a blank on a side seam sealing machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.