Plasticating extruder screw conveyors
US4387997A · kind A · utility
28Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Sep 16, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plasticating extruder in which the screw conveyor includes an inner backfeed passage communicating with the channel established by the main flight of the screw conveyor and a solids-directing flight for directing unplasticated material into the backfeed passage and segregating already-plasticated material from the unplasticated material in the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.