ETHYLENE-BASED RESIN COMPOSITION AND MOLDED BODY

To provide an ethylene-based resin composition capable of producing a molded body which is excellent in moldability and rigidity and is more easily stretched in the transverse direction relative to the flow direction during molding and hardly causes longitudinal tearing compared to conventionally well-known ethylene-based resins and to provide a molded body obtained from the ethylene-based resin composition.SOLUTION: There is provided an ethylene-based resin composition (Z) which comprises an ethylene-α-olefin copolymer (A), which is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms, wherein the ratio [MT/η*(g/P)] of a melt tension [MT(g)] at 190°C to a shear viscosity [η*(P)] at 200°C and an angular velocity of 1.0 rad/second is 1.20×10-4 or more and 2.90×10-4 or less and the ratio [η0/Mw3.4] of a zero shear viscosity [η0(P)] at 200°C to a weight average molecular weight (Mw) is 0.01×10-13 or more and 2.5×10-13 or less, and an ethylene-based polymer (B).SELECTED DRAWING: None 【課題】成形性と剛性に優れ、かつ従来公知のエチレン系樹脂と比較して成形時の流れ方向に対して横方向に伸びやすく縦裂けしにくい成形体を製造することのできるエチレン系樹脂組成物、ならびに該エチレン系樹脂組成物から得られる成形体を提供する。【解決手段】エチレンと炭素数４～１０のα-オレフィンとの共重合体であって、１９０℃における溶融張力〔ＭＴ（ｇ）〕と、２００℃、角速度１.０ｒａｄ／秒におけるせん断粘度〔η*（Ｐ）〕との比〔ＭＴ／η*（ｇ／Ｐ）〕が１.２０×１０-4以上２.９０×１０-4以下の範囲にあって、２００℃におけるゼロせん断粘度〔η0（Ｐ）〕と重量平均分子量（Ｍｗ）との比〔η0／Ｍｗ3.4〕が０．０１×１０-13以上２．５×１０-13以下の範囲にあるエチレン-α-オレフィン共重合体（Ａ）と、エチレン系重合体（Ｂ）とを含むエチレン系樹脂組成物（Ｚ）。【選択図】なし