BLOWN CONTAINER COMPOSITION AND BLOWN CONTAINER MADE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide ethylene/α-olefin copolymer compositions excellent in moldability, environmental stress-crack resistance and shrinkage such as warpage of bottles, and blown containers made thereof. SOLUTION: A desired blown container composition is composed of an ethylene/α-olefin copolymer having an MFR at 190 deg.C under a load of 2.16 kg of 0.5-1.8 g/10 min; an MFR ratio value of the MFR under a load of 11, 160g divided by the MFR under a load of 1,160 g of 50-100; a density of 0.950-0.960 g/cm<3> ; an isothermal crystallization time, measured at a temperature of 15 deg.C below the melting point, of 75 sec or less; an environmental stress-crack resistance of 50 hr or more; and a melt tension at 190 deg.C of 2.0 g or more. A desired blown container is obtained by blow molding of this ethylene/α-olefin copolymer composition.