Method of fusion welding resin articles difficult to melt

摘要

In a method of fusion welding resin articles difficult to melt due to a fusion retarder present in the articles in the form of a fusion retarding element or structure, the articles having surface portions in contact with each other so as to be bonded one to another, a fusion accelerator is applied to the surface portions, with the accelerator being capable of destroying the fusion retarder when heated. After or simultaneously with this step, the resin articles are heated so that the fusion accelerator destroys the fusion retarder, so as to cause the surface portions to melt, before finally allowing the resin articles to cool down.