Devolatilizing mixing extruder
US4491417A · kind A · utility
13Cited by
9References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1983 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Apr 29, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/812
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder including a devolatilizing section having helical channels formed in the barrel and having a cylindrical rotor closing the inner sides of the channels. Material is fed onto the rotor surface which rotates and forms the material into one or more rolling banks engaging only the upstream flank of the channels and the rotor surface. Helical vent slots pass through the barrel into each channel at the downstream flanks not occupied by the rolling bank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.