Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1991-07-17
1992-06-23
Pianalto, Bernard
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427444, B05B 306
Patent
active
051241730
ABSTRACT:
According to this invention, there is provided an atmospheric pressure plasma surface treatment process comprising the steps of introducing a gas in a plasma reaction apparatus having a pair of dielectric-covered electrodes having opposing surfaces on at least one of which is provided with a solid dielectric; performing plasma excitation under atmospheric pressure; and surface treating an object placed between the opposing electrodes, wherein the gas introduced is a gaseous composition consisting essentially of argon, helium and/or ketone. This process makes it possible to quickly imparting hydrophilic nature to surfaces of an object made of a plastic to be treated. The hydrophilic nature given lasts long.
Kogoma Masuhiro
Okazaki Satiko
Uchiyama Hiroshi
C. Itoh Fine Chemical Co., Ltd.
E. C. Chemical Co., Ltd.
Kogoma Masuhiro
Okazaki Satiko
Pianalto Bernard
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