| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin composition for an injection-molded container lid which is excellent in high-speed moldability, high fluidity, a balance between rigidity and impact resistance, stress-crack resistance, slipping property, low odor, and food safety. <P>SOLUTION: The polyethylene resin composition for injection-molded container lid contains an ethylene based polymer (A) of 20 mass% or higher and less than 40 mass%, and an ethylene based polymer (B) of 60 mass% or higher and 80 mass% or lower. For the ethylene based polymer (A), HLMFR is 1 g/10 minutes or higher and 10 g/10 minutes or lower, and the density is 0.910 g/cm<SP>3</SP>or higher and 0.950 g/cm<SP>3</SP>or lower. For the ethylene based polymer (B), MFR is 30 g/10 minutes or higher and less than 150 g/10 minutes, and the density is 0.960 g/cm<SP>3</SP>or higher. Further, for the polyethylene resin composition, (i) MFR is 1 g/10 minutes or higher and less than 10 g/10 minutes, HLMFR is 70 g/10 minutes or higher and less than 400 g/10 minutes, HLMFR/MFR is 40 or higher and less than 80, and (ii) the density is 0.953 g/cm<SP>3</SP>or higher, and less than 0.965 g/cm<SP>3</SP>. <P>COPYRIGHT: (C)2009,JPO&INPIT |
