| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a molding which can give the molding of polylactic acid being excellent in mechanical properties, and has high productivity, and to provide a molding of polylactic acid excellent in mechanical properties, and a method for improving mechanical properties of the molding of polylactic acid.SOLUTION: The manufacturing method includes a process for molding a polylactic acid based resin composition of a molten state which includes a specific amide compound the crystal of which is in a state of a needle crystal or a columnar crystal and/or a minute condition; and more specifically a process in which the amide compound completely dissolve the polylactic acid based resin, subsequently the resin composition is cooled to the crystallization temperature or lower, and the polylactic acid resin composition is molded in the temperature range which is the melting point of the polylactic acid based resin or higher and is lower than the melting temperature of the amide compound. |
