| 摘要 |
<p>The purpose of the present invention is to provide a polylactic acid resin foam particle having excellent fusion properties during in-mold molding, which can be achieved by controlling the crystalline state of a polylactic acid resin foam particle. This polylactic acid resin foam particle is characterized by having such a crystalline structure that, in a first-round DSC curve that is obtained by a first temperature-rising process and a second-round DSC curve that is obtained by cooling the particle that has been subjected to the first temperature-rising process and then rising the temperature of the particle again, which are measured by a heat-flux differential scanning calorimetry method in accordance with JIS K7122 (1987), the following two melting peaks appear in the first-round DSC curve: a melting peak having a peak temperature on the higher-temperature side than a reference peak temperature that is the peak temperature of the melting peak in the second-round DSC curve; and a melting peak having a peak temperature on the lower-temperature side than the reference peak temperature.</p> |
