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

C - Chemistry, Metallurgy

08

J

18/18, 18/543

C08J 9/26 (2006.01) C25B 11/00 (2006.01) H01M 4/86 (2006.01) H01M 8/02 (2006.01)

Patent

CA 1167615

ABSTRACT OF THE DISCLOSURE This disclosure is directed to a one pass process for forming a porous, uniaxially oriented polyteerafluoroethylene sheet which is coherent and suitable for utilization as an elec- trode backing (wetproofing) sheet and the resulting baking sheet. Particulate PTFE is bleeded 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 roll?rs.

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