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：Kenji Hatada,Osamu Miyajima,Hiroaki

Kobayashi

申请号：US06/471734申请日：19830303公开号：US04488954A公开日：19841218

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. Thepresent 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 equal to or less than 2mm, letting a gas into the plastic tube, keeping the inner pressures of both tubes at areduced pressure, applying a high voltage across electrodes disposed outside theelectrically insulating tube to initiate and sustain discharge only inside the plastic tubeand thereby plasma-treating the inner surface of the plastic tube.

申请人：TORAY INDUSTRIES, INC.

代理机构：Armstrong, Nikaido, Marmelstein & Kubovcik

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