One pass process for forming electrode backing sheet

Details One pass process for forming electrode backing sheet One pass process for forming electrode backing sheet

1980-10-31

1982-07-13

Edmundson, F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

264 49, 429247, 429 42, C25B 1302, C25B 1308

Patent

active

043393250

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.

REFERENCES:
patent: 4058482 (1977-11-01), Baris
patent: 4150076 (1979-04-01), Baris
patent: 4170540 (1979-10-01), Lazarz
patent: 4196070 (1980-04-01), Chao et al.
patent: 4289600 (1981-09-01), Lazarz et al.
patent: 4292146 (1981-09-01), Chang et al.
patent: 4297196 (1981-10-01), Lazarz et al.
patent: 4302303 (1981-11-01), Guillaume et al.
Weast, Handbook of Chemistry and Physics, 52nd Ed., p. B-65, pub. by Chem. Rubber Co., Cleveland, Ohio, 1971.

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