The present invention provides a method which enables the surface of a molded article of a polypropylene resin to be modified to a surface suitable for coating, bonding, printing, etc. A molded article of a polypropylene resin comprising polypropylene, an ethylene-propylene copolymer rubber and an ethylene-acrylic acid or ethylene-methacrylic acid copolymer and optionally a filler is irradiated in the air with a light from a synthetic quartz low pressure mercury lamp having an output of 200 W for 60 sec with the distance between the surface of the molded article and the lamp being kept at about 10 cm.
本发明提供了一种方法,可将聚
丙烯树脂模塑制品的表面改性为适合涂覆、粘合、印刷等的表面。将一个由聚
丙烯、
乙烯-
丙烯共聚橡胶、
乙烯-
丙烯酸或
乙烯-
甲基丙烯酸共聚物和填料组成的聚
丙烯树脂模塑品在空气中用输出功率为 200 瓦的合成石英低压
汞灯的光照射 60 秒,模塑品表面与灯之间的距离保持在 10 厘米左右。