Method and apparatus for shaping a rectangular carton blank
US4468214A · kind A · utility
2Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | May 11, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In folding boxes forming a conveyor chain, rectangular, tubular carton blanks are introduced stepwise into two juxtaposed mirror-image designed folding stations. In the folding stations, the carton blanks are defomed by means of fingers and clamps so that their base surface is pulled into a parallelogram. The two edges forming the longer diagonal are pressed by means of stamping dies and by means of a counterholder and a stamping plate, respectively. After pressing, the carton blanks are pulled back into the folding boxes and are returned to their rectangular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.