One pass process for forming electrode backing sheet
US4339325A · kind A · utility
31Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1980 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Oct 31, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This disclosure is directed to a one pass process for forming a porous, uniaxially oriented polytetrafluoroethylene sheet which is coherent and suitable for utilization as an electrode backing (wetproofing) sheet and the resulting backing sheet. Particulate PTFE is blended in an organic liquid medium to form a dispersion to which a pore-forming agent is added. After mixing, the organic liquid is removed and the dry mix is fibrillated, chopped and formed into a sheet by passing it once through heated rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.