Plasticizing sections of cold feed rubber extruders
US5215374A · kind A · utility
12Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1991 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Apr 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/64
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A single-rotor cold feed extruder having a barrel and a screw and incorporating a transfermix plasticizing/mixing section is disclosed. The extruder is provided with a fixed set of flow-interrupters/deflectors carried by the barrel and positioned in a circumferential cut in the screw downstream of the transfermix section. The extruder is characterized by radially movable throttle members which are located around the flow interrupters/deflectors so as to provide an increase of throughput for and improved quality of difficult-to-extrude compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.