POLYLACTIC MULTILAYER SHEET HAVING EXCELLENT TRANSPARENCY AND MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A polylactic acid family multilayer and a manufacturing method thereof are provided to secure the excellent transparency and shock resistance of the multilayer. CONSTITUTION: A polylactic acid family multilayer is formed with multiple layers including two surface layers and an inner layer. The inner layer of the polylactic acid family multilayer is formed by mixing 100parts of polylactic acid by weight having D-isomer less than 3mol%, 0.5~5parts of organic nucleating agent by weight formed with aliphatic carboxylic acid amide having an amide bond, and 0.5~5parts of dispersion agent by weight. The surface layers of the polylactic acid family multilayer are formed by mixing 100parts of polylactic acid by weight having D-isomer less than 8mol%, and 1~20parts of polylactic acid copolymer, aliphatic polyester, or aromatic-aliphatic polyester by weight.