Paste extrusion of PTFE
US4145385A · kind A · utility
5Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Dec 15, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2027/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The fibrillated surface layer of an unsintered extruded mass of a polytetrafluoroethylene is broken by mechanical or electrical force to facilitate evaporation of the lubricant whereby a molded article which is free from defects such as cracks and blisters is obtained upon sintering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.