| 摘要 |
PROBLEM TO BE SOLVED: To provide a foamed molding having sufficient mechanical strength.SOLUTION: A foamed molding uses a polystyrene resin as a base resin and is obtained by fusing pre-foamed particles together. In the curve of the logM as to molecular weights M obtained by GPC measurement of the base resin and the differential distribution value, the top peak molecular weight (Mp) is 100,000-180,000, and the area S1 specified by molecular weights of Mp or higher and the area S2 specified by molecular weights of Mp or lower satisfies the relation of S1>S2×1.1. |
