Paste extrusion method
US6174473A · kind A · utility
19Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1998 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jul 27, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2027/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process of paste extruding lubricated PTFE fine powder in an extrusion device by forcing the lubricated PTFE fine powder through the extrusion device and out of an orifice as a lubricated green extrudate, wherein before exiting through the orifice, the direction of the flow of the lubricated PTFE fine powder in the extrusion device is reoriented in a direction at least 60 degrees different from the initial direction of the flow of the lubricated PTFE fine powder through the extrusion device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.