Continuous polytetrafluoroethylene fibers
US5281475A · kind A · utility
19Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1991 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Oct 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention provides for a continuous PTFE fiber having on its surface a substantially round profile and a single spiralling seam formed from a continuous sheet of polytetrafluoroethylene which is helically rolled and self-adhered. The PTFE sheet may include microporous PTFE as well as expanded microporous PTFE. The PTFE sheet may be filled with particulate fillers or coated with polymeric coatings prior to the formation of the inventive fiber. The PTFE sheet may be used to contain various filamentary or sheet-like elements with the inventive fiber. The method for producing the inventive fiber is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.