| 摘要 |
PURPOSE:To improve coating performance, printability, and adhesiveness of molded article, by treating the surface of the molded article of polypropylene resin consisting of ethylene-propylene block copolymer containing specific xylene- soluble component and xylene-insoluble component with plasma at low temperature. CONSTITUTION:The surface of a molded article of a polypropylene resin comprising an ethylene-propylene block copolymer (preferably having 1-80g/10min melt flow rate) consisting of 3-40wt% xylene soluble component (normal temperature) having 10-80wt% ethylene content, and 97-60wt% xylene insoluble component (normal temperature) having <=20wt% ethylene content and 130- 158 deg.C main melt peak temperature is subjected to low-temperature plasma treatment (e.g., by a microwave plasma treatment device under oxygen gas at 0.1-10Torr for 5sec-15min). |
