| 摘要 |
PURPOSE:To obtain the title molding prevented from lowering in mechanical properties upon irradiation with gamma-rays without detriment to its transparency, mold release and molding cycle by molding a resin composition comprising a PP resin and an ethylene/alpha-olefin random copolymer. CONSTITUTION:A resin composition is obtained by mixing 80-99wt.% PP resin of a melt flow rate (ASTM D-1238, at 230 deg.C under a load of 2.16kgf) of 5-30g/10min with 1-20wt.% ethylene/alpha-olefin random copolymer of a melt flow rate (ASTM D-1238, at 190 deg.C under a load of 2.16kgf) of 0.1-30g/10min and an ethylene content of 50-95mol% and optionally a heat stabilizer, a weathering agent, a flame retardant, a nucleator, a pigment, a dye, a lubricant, a rust preventive, etc. This resin composition is molded. |
