Patent ID: 9023470
Filing Date: 2015-05-05
Classification: C08G,C08J,Y10T

Abstract:
1. A polylactic acid resin expanded bead, comprising such a crystal structure that gives a first time DSC curve when 1 to 4 mg of a measurement specimen sampled from the expanded bead are heated, for melting, according to a heat flux differential scanning calorimetry referenced in JIS K7122(1987), from 23° C. to a temperature higher by 30° C. than a fusion peak ending temperature at a heating speed of 10° C./min, and a second time DSC curve when the measurement specimen is then maintained for 10 minutes at the temperature higher by 30° C. than the fusion peak ending temperature, then cooled to 40° C. at a cooling speed of 10° C./min and then again heated, for melting, to a temperature higher by 30° C. than a second fusion peak ending temperature at a heating speed of 10° C./min, said second time DSC curve having a fusion peak having a reference peak temperature, said first time DSC curve having a first at least one fusion peak with a peak temperature higher than the reference peak temperature and a second at least one fusion peak with a peak temperature lower than or equal to the reference peak temperature.