| 摘要 |
<p>A molded article having heat resistance, heat retaining properties, and biodegradability, and a method for production of the molded article are provided. A mug 1 as a molded article is an injection-molded article formed by injection molding a resin composition containing a polylactic acid and fine particles having an average particle size of 1 to 150 nm and prepared by impregnating the polylactic acid and the fine particles with supercritical nitrogen in the range of 0.05 to 0.3% by weight based on the whole amount ofthe resin composition. The injection-molded article comprises a foam layer 4 of discontinuous cells inside thereof and a non-foam layer 5 formed integrally with the foam layer 4 on the surfaces thereof. The foam layer 4 includes discontinuous cells having an average pore size of 0.5 to 50 µm. The non-foam layer 5 has a degree of crystallinity of 15 to 28%.</p> |
