| 摘要 |
PURPOSE:To improve the paintability, printability, adhesivity, etc. of a molded article made of a propylene polymer blended with an ethylene-propylene rubber or an ethylene-propylele-diene rubber, by irradiating the surface of the article with low temperature plasma. CONSTITUTION:A composite resin composed of a propylene resin blended with 2- 40wt% of an ethylene-propylene rubber or an ethylene-propylene-diene rubber, especially a resin composed of 60-80wt% of an ethylene-propylene copolymer, 10- 20wt% of an ethylene-propylene rubber and 10-20wt% of polyethylene, is irradiated with low temperature plasma generated by exciting a gas such as oxygen, nitrogen, argon, helium, etc. with glow discharge, high frequency discharge, etc. under a pressure of <=100mm.Hg, pref. 0.1-10mm.Hg at an intensity of 100-60,000Wsec/l, pref, 200-30,000Wsec/l. The surface of the article is polarized and roughened by the treatment. |
