초록 ▼

A molded article of foamed particles according to the invention is obtained by using the foamed particles as described above and molding them, and has a density of 0.01-0.3 g/cm.sup.3 and a tensile modulus of 15,000-25,000 kg/cm.sup.2. It has a crystal structure that an inherent peak and a high-temp

A molded article of foamed particles according to the invention is obtained by using the foamed particles as described above and molding them, and has a density of 0.01-0.3 g/cm.sup.3 and a tensile modulus of 15,000-25,000 kg/cm.sup.2. It has a crystal structure that an inherent peak and a high-temperature peak appear on a DSC curve obtained by its differential scanning calorimetry like the case of the foamed particles. As with the foamed particles, a quantity of heat at the high-temperature peak is 30-60 J/g.

대표청구항 ▼

[ We claim:] [1.] Foamed particles comprising a polypropylene homopolymer as a base resin and having a tensile modulus of 15,000-25,000 kg/cm.sup.2 and a crystal structure that an inherent peak and a high-temperature peak appear as endothermic peaks on a DSC curve obtained by differential scanning c

[ We claim:] [1.] Foamed particles comprising a polypropylene homopolymer as a base resin and having a tensile modulus of 15,000-25,000 kg/cm.sup.2 and a crystal structure that an inherent peak and a high-temperature peak appear as endothermic peaks on a DSC curve obtained by differential scanning calorimetry of the foamed particles (said high-temperature peak means a peak which appears on the temperature side higher than a temperature corresponding to the inherent peak of endothermic peaks appearing on the DSC curve obtained by heating 2-4 mg of the foamed particles to 220.degree. C. at a heating rate of 10.degree. C./min by a differential scanning calorimeter), characterized in that a quantity of heat at said high-temperature peak is 30-60 J/g.