| 摘要 |
PURPOSE: To obtain a multi-layered molded item having excellent impact resistance and improved glossiness in its surface by employing a propylene/α-olefin copolymer having a specified crystallization point and an MFR in its surface layer, and a propylene/α-olefin copolymer having a higher crystallization melting point than that of the surface layer in its inner layer. CONSTITUTION: An olefin composition (B) comprising 100 pts.wt. propylene/α- olefin copolymer (A) having the crystallization point of 115-155 deg.C and a Melt Flow Rate (MFR; 230 deg.C, 21.18N) of 130g/10 min. and 0.05-0.8 pts.wt. nucleating agent is employed in the surface layer. Used for the inner layer is a multi- layered molded item having two layers or more, having a higher crystallization melting temperature than that of the propylene/α-olefin copolymer (A), the polypropylene/α-olefin copolymer (C) being 0.3-3g/10min. in MFR (230 deg.C; 21.18N), and others. Then, the surface is heated in such a degree that it becomes a molten state. |
