| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treatment method for a resin molded product enhancing adhesion strength of a printing ink or a coating in the surface of the resin molded product having hardly printing property or hardly coating property and not impairing dimensional precision of the resin molded product. SOLUTION: The resin molded product having the hardly printing property or the hardly coating property, a polishing stone and water are thrown into a treatment vessel and are made to flow in a form of whirlpool and the resin molded product and the polishing stone are made to collide. Thereby, roughening of ten-point average roughness of surface of the resin molded product is carried out to 10μm-40μm. COPYRIGHT: (C)2005,JPO&NCIPI
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