Atmospheric pressure plasma surface treatment process
AssigneesE. C. Chemical Co., Ltd., C. Itoh Fine Chemical Co., Ltd., Satiko Okazaki, Masuhiro Kogoma
InventorsHiroshi Uchiyama, Satiko Okazaki, Masuhiro Kogoma
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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.
Claims23
At 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 a molded polymer article
- placed between the opposing electrodes, wherein the gas introduced is a gaseous composition consisting essentially of (1) argon and (2) a member selected from the group consisting of helium, ketone and a mixture of helium and ketone.
Dependencies are inferred from the claim text.