POLYPROPYLENE RESIN FOAM PARTICLE AND MOLDING THEREOF

摘要

A polypropylene resin foam particle from which a foam particle molding excelling in appearance, heat resistance and mechanical properties can be obtained at an in-mold shaping temperature lower than that for conventional polypropylene resin foam particles; and a foam particle molding obtained by shaping the same. The polypropylene resin foam particle is characterized by having such a crystal structure that in the first DSC curve obtained when the temperature of the particle is raised from ordinary temperature to 200°C at a temperature rising rate of 2°C/min by a differential scanning calorimetry, there appear a main endothermic peak of 100°to 140°C endothermic peak apex temperature exhibiting 70 to 95% endothermic peak calorific value based on the total endothermic peak calorific value and two or more endothermic peaks exhibited on the high temperature side with respect to the main endothermic peak.