Apparatus and method useful in manufacture of two piece cups
US5507640A · kind A · utility
30Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1992 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Dec 11, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2105/0022
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved heating method and heating nozzle useful in the forming of a two-piece thermoplastic foam cup assembled from two thermoplastic foam pieces on a cup-forming turret machine. The method and apparatus of the invention prevent premature sticking of the foam bottom piece to the foam sidewall piece and result in better sealing of the foam bottom to the sidewall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.