Extruder and process for preparing a mixture of polymer and diluent
US8770824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2008 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Sep 6, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/402
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a twin screw extruder for preparing a polymeric solution. The extruder includes an elongated housing having an inlet end, an outlet end, an extruder shaft length L and a pair of interconnecting bores disposed within the housing, a pair of elongated extruder shafts, each having an axis of rotation, the pair of elongated extruder shafts disposed within the pair of interconnecting bores and drivable in at least one direction of rotation, a plurality of extruder screw segments positioned along the pair of elongated extruder shafts in a fixed angular relationship therewith, the plurality of extruder screw segments selected to form multiple extruder stages. The invention also relates to a process for extruding a mixture of polymer and diluent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.