Apparatus for forming a denesting lip on paperboard containers
US4761156A · kind A · utility
10Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1987 |
| Grant date | Aug 2, 1988 |
| Priority date | — |
| Expiry date | Jan 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B50/642
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for forming a denesting lip in paperboard containers by folding, heating, and sealing or tacking a side extension flap to form a denesting lip for nested stacks of such containers. The denesting apparatus includes a pair of pressure pads which guide the paperboard container onto the apparatus and prevent the container from sliding off the apparatus while the denesting operation is performed. The apparatus also includes a multiplanar mandrel pad for forming a bottom closure that is flat on its exterior surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.