Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1992-09-28
1993-06-15
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
264 22, 264 80, 521 77, 521918, 522 2, 528481, 528503, C08J 938
Patent
active
052198944
ABSTRACT:
A method for treating the surface of a thin porous film material of tetrafluoroethylene resin is disclosed, which comprises heating said surface to a temperature higher than the thermal decomposition point of said resin so as to decompose and remove part of said surface. The resulting thin porous film material of tetrafluoroethylene resin has an adhesive surface while retaining the desired pore size, hardness, and degree of penetration of adhesive.
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Asako Shigeru
Okita Koichi
Toyo-oka Shin-ichi
Yamada Katsuya
Foelak Morton
Sumitomo Electric Industries Ltd.
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