| 摘要 |
PURPOSE:To obtain a foamed particle molding of a polypropylene-based resin being lightweight, high in rigidity and having excellent physical properties. CONSTITUTION:This formed particle molding of a polypropylene-based resin contains a propylene-based random copolymer containing a comonomer components of 1-butene and ethylene as a base resin and has 0.01-0.3g/cm<3> density, and the relationship between a tensile modulus (XTM) [kgf/cm<2>] of the base resin and a melting point (XT) [C] of the resin satisfy the conditional expression (1) 205XT-XTM<=17800 and (2) 355 XT--XTM<=39000 and the relationship between 1-butene component content (WB)[wt.%] of the base resin and ethylene component content (WE) [WT.%] satisfy the following condition formulas (3) to (5). 1<=WB+WE<=12... (3), WE<=2... (4) and WB>=1... (5). |
