Heating improvements in a preform reheat system
US4204111A · kind A · utility
26Cited by
12References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1977 |
| Grant date | May 20, 1980 |
| Priority date | — |
| Expiry date | Oct 19, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2949/0715
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the process of raising elongated thermoplastic preforms to molding temperature by programming heat from vertically adjacent heaters at different temperatures into vertical zones of rotating preforms advancing before the heaters, the improvement of preventing heat waves emanating from one heater toward an oppositely disposed preform zone from overlapping into an area through which waves are issuing from the next adjacent heater. The apparatus includes blind members between immediately adjacent heaters extending toward the preforms to concentrate heat onto the oppositely disposed preform zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.