METHOD FOR INJECTION-MOLDING POLYLACTIC ACID-BASED RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a method for injection-molding a polylactic acid-based resin composition which contains polylactic acid, polypropylene and rubber and allows an injection-molded article obtained therefrom to have excellent impact resistance and excellent appearance simultaneously. SOLUTION: The method for injection-molding the polylactic acid-based resin composition includes: using the polylactic acid-based resin composition, which contains polylactic acid, polypropylene and rubber and has≤500 ppm water content, as a raw material; and injection-molding the polylactic acid-based resin composition under a such a condition that the molding temperature and the residence time satisfy the inequality: Y≤-2.1X+489 (wherein X is the molding temperature (°C); Y is the residence time (minute)). COPYRIGHT: (C)2010,JPO&INPIT