Extruder for processing rubber mixtures
US6854873B2 · kind B2 · utility
1Cited by
15References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 2002 |
| Grant date | Feb 15, 2005 |
| Priority date | — |
| Expiry date | Oct 1, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2301/10
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to an extruder for the preparation of rubber mixtures for elastomeric products and comprises a cylinder, an endless screw rotatably mounted in the cylinder for uptake transport and homogenization of the rubber mixture, and an extrusion tool; wherein the endless screw is configured with zones of multiple treads in dependence of varying helix angle and depth of thread so that the rubber mixture transported through the zones undergoes a temperature increase through heat dissipation to such an extent that the temperature of the extrudate approaches the vulcanization temperature thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.