Expanded polylactic acid resin beads and foamed molding obtained therefrom

摘要

An expanded bead of a polylactic acid resin containing at least 50 mole % of lactic acid units. The expanded bead has such characteristics in heat flux scanning differential calorimetry that a difference ( DELTA Hendo:Bead- DELTA Hexo:Bead) between an endothermic calorific value DELTA Hendo:Bead and an exothermic calorific value DELTA Hexo:Bead is not less than 0 J/g but less than 30 J/g and that the endothermic calorific value DELTA Hendo:Bead is at least 15 J/g. A foamed molding obtainable by molding the expanded beads in a mold has a flexural strength of A ÄN/cm<2>Ü and a density of B Äg/cm<3>Ü, wherein the ratio of A/B is at least 294 N.cm/g.