| 摘要 |
PURPOSE:To perform uniform corona discharge treatment, by performing the treatment while moving a discharge electrode relative to the surface of a resin molding to be treated and controlling the power of a high-frequency wave application means by automatically detecting a change in the distance between the both. CONSTITUTION:While the distance between a discharge electrode 50 which generates a corona discharge and the surface to be treated of a three- dimensional resin molding 1 is being kept nearly constant by a transfer means B, the discharge electrode 50 is moved relative to the three-dimensional resin molding 1. A high-frequency application means C is actuated and the discharge electrode is made to generate a corona discharge by application of high-fre quency wave thereto, thus modifying the surface of the molding 1 to be treated by corona discharge treatment. When the distance between the surface to be treated of the molding 1 and the discharge electrode 50 is changed due to defor mation, etc., of the molding, the power of discharge is kept constant by detecting the change with a detection circuit provided in the high-frequency application means C and controlling the oscillation power by a circuit for controlling it. |
