Abstract
An apparatus for the inner-surface treatment of tube connectors by atmospheric pressure plasma generated by opposed coaxial electrodes using RF power was developed. We found that good hydrophilic property of the tube connectors could be obtained by forming minute flutes on the inner electrode, where gas can flow, limiting discharge space to the flute. This report describes the changes in the hydrophilic property by the improvement of the electrode structure of the opposed coaxial type and the results compared with the double spiral type to clarify features of the treatment property of the opposed coaxial type.
