Patent ID: 7799412

Claim:
A polylactic acid-based resin laminate sheet comprising: 1) a Layer A and a Layer B of polylactic acid-based resin compositions each containing poly(meth)acrylate-based resin, and, said Layer A and said Layer B satisfy the following condition (a): 0≦Xa<Xb (a) wherein, Xa: is a ratio (wt %) of poly(meth)acrylate-based resin with respect to whole polylactic acid-based resin composition constituting said Layer A Xb: is a ratio (wt %) of poly(meth)acrylate-based resin with respect to whole polylactic acid-based resin composition constituting said Layer B, and 2) an impact resistance improver in at least one of Layers A and B, wherein all layers constituting the sheet satisfy the following condition (b): [ xn p +(100 −x ) nq− 100 n r ]<4 (b) wherein, x: is a ratio (wt %) of the polylactic acid-based resin based on 100 wt % of total of the polylatic acid-based resin and the poly(meth)acrylate-based resin n p : refractive index of the polylactic acid-based resin n q : refractive index of the poly(meth)acrylate-based resin n r : refractive index of the impact resistance improver.