Machine for erecting hexagonal drum
US4457744A · kind A · utility
1Cited by
12References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 26, 1980 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Nov 26, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method and apparatus for erecting a polygonal carton from a collapsed envelope (blank) are disclosed. The carton is preferably a two-ply hexagonal carton having a bottom that forms automatically as the oppositely disposed sidewall-forming panels of the envelope are separated. An improved envelope for use with the apparatus is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.