Method of treating inner surface of plastic tube w

专利名称：Method of treating inner surface of plastic

tube with plasma

发明人：Hatada, Kenji,Miyajima, Osamu,Kobayashi,

Hiroaki

申请号：EP83300850申请日：19830218公开号：EP0089124A3公开日：19860219

专利附图：

摘要：In plasma-treating the inner surface of a plastic tube, the invention provides atreating method which ensures stable treatment under readily operative conditions. The

present invention relates to a method comprising the steps of placing a plastic tubeinside an electrically insulating tube wherein the difference between the inner diameterof the insulating tube and the outer diameter of the plastic tube is less than 2 mm,letting a gas into the plastic tube, keeping the inner pressures of both tubes at a reducedpressure, applying a high voltage across electrodes disposed outside the electricallyinsulating tube to initiate and sustain discharge inside the plastic tube and thus plasma-treating the inner surface of the plastic tube.

申请人：TORAY INDUSTRIES, INC.

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