Side feeder having separate pressure regions for degassing
US11577441B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | May 30, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/797
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a screw extruder (29) having a housing (30) comprising an intake housing (4), a degassing housing (5), and at least one housing bore (21, 22) running in the interior of the degassing housing (5) and implementing at least one internal wall segment (25; 26; 27; 28) of the degassing housing (5) and serving for receiving at least one auger shaft (7), and wherein the at least one wall segment (25; 26; 27; 28) of the at least one housing bore (21, 22) comprises at least one partition wall (13, 33) protruding into the at least one housing bore (21, 22) in the region of the degassing housing (5), and wherein at least one filter element (8) is disposed in the interior of the degassing housing (5) and at least partially encompasses the at least one auger shaft (7) and bears on the partition wall (13) in regions for implementing at least two spatial pressure regions (11, 12) sealed off from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.