Extrusion and refining apparatus and method
US5641227A · kind A · utility
Inventor
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29B7/842
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An extruder apparatus for use in straining refining, separating and extruding thermo-plastic and rubber like process material includes a rotor positioned in barrel with a barrier section located between two barrel sections. The portion of the rotor in the barrier section has a smooth surface and the smooth surface and the barrier section are conical. The barrier section includes receiving and sending grooves separated by barriers. All material passing through the barrier section passes between the barriers and the smooth rotor section. Longitudinal movement of the smooth rotor section changes the clearance between the barriers and the rotor to restrict flow between a maximum flow and a closed position. The clearance can be adjusted so that different materials can be extruded in the same apparatus and adiabatic flow can be achieved. Discharge ports at the downstream end of the receiving grooves port rejected material to atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.