Hydrophilization treatment method of polypropylene resin

Abstract

A treatment device 1 includes: a treatment tank 2; an electrolytic cell 6 including diamond electrodes continuous from a pipe 4 including a circulation pump 5; and a pipe 7 supplying from the electrolytic cell 6 to the treatment tank 2. The treatment tank 2 and the electrolytic cell 6 are filled with sulfuric acid having a predetermined concentration; current is applied to the electrolytic cell 6 to electrolyze the sulfuric acid and a persulfuric acid solution S is generated by electrolyzing the sulfuric acid; and the persulfuric acid solution S is supplied to the treatment tank 2 through the pipe 7. Besides, inside the treatment tank 2, a polypropylene resin board 8 which is a treatment target is vertically suspended in a state of being fixed to a fixture 8A, and the polypropylene resin board 8 is treated by the persulfuric acid solution S.

Dependencies are inferred from the claim text.