To solve technical problems such as impact resistance, solvent resistance, low double refractive index and separation mark by molding polycarbonate resin at specified surface temperatures for a sheet on the roll side in a specular shaping process and a specified ratio between the velocities of a final shaping specular roll and a take-up roll.

When rolling polycarbonate resin into a sheet with the help of plural specular rolls 3, 4, 5, the surface temperatures of the sheet on the roll side immediately after the sheet separated from a final specular roll 5 runs over the radial length of the final specular roll 5 are set to the glass transition temperatures of the resin of -10-+30°C. The resin is also molded within the range of a velocity ratio between the final specular roll 5 and the take-up roll 8 of 1:0.95-1.05. The surface of the specular rolls 3, 4, 5 is important as a determining factor for the appearance of the sheet, and the required surface roughness for smoothness is generally 0.1-0.005μm. The interior of the roll is structurally designed so that a heat medium such as water or oil can be internally circulated, and therefore, the temperatures of the roll can be adjusted.