| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of enabling a polylactic acid film to be used for a decorative sheet for a packaging material, a building material, furniture, and the like, and a wrapping film and the like for a household electric appliance and the like, which require durability and designability by printing. SOLUTION: Hydrolysis resistance of the polylactic acid is improved by capping the terminal carboxyl group with an epoxy group or a carbodiimide group. Either or both of surfaces of the biaxially stretched polylactic acid film using the polylactic acid is coated with acrylic resin which is polymerized by solution polymerization, and has a weight average molecular weight of 8,000 to 50,000, a hydroxyl group equivalent obtained by (the equation of number average molecular weight)/(number of hydroxyl group) of 300 to 3,000, and a glass transition temperature of 40 to 105°C. COPYRIGHT: (C)2010,JPO&INPIT
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