Extruder having degree-of-kneading adjusting device
US5145251A · kind A · utility
9Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1990 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Oct 31, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92895
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A resin extruder in which the degree-of-kneading of the resin can be effectively controlled. The invention can be applied to both a single-screw extruder and a twin-screw extruder. In either case, blocking walls are formed around a cylindrical portion of the screw or screws just upstream of the kneading section. A valve structure is provided in the walls to control the kneading of resin at the kneading section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.