| 摘要 |
PROBLEM TO BE SOLVED: To provide a polylactic acid-based oriented sheet that has good heat resistance and transparency while simultaneously having well-balanced practical impact resistance and moldability, a method for manufacturing the same, and a formed product obtained by forming the polylactic acid-based oriented sheet. SOLUTION: The polylactic acid-based oriented sheet is obtained by at least performing uniaxial orientation of a resin composition containing a polylactic acid-based resin (A) and a methacrylate-based resin (B). A blending ratio of the polylactic acid-based resin (A) to the methacrylate-based resin (B) in the resin composition, (A):(B) is 75:25 to 45:55 (mass ratio). Average values of surface orientation degrees (ΔP) and orientation relaxation stress (ORS) of the oriented sheet obtained in the longitudinal direction and the width direction satisfy formula (1)ΔP≥(4.6-0.072X)/1,000 and formula (2) ORS≤5.5 MPa. The formed product is obtained by forming the polylactic acid-based oriented sheet. COPYRIGHT: (C)2011,JPO&INPIT
|
