TWI803617B

The present invention provides a resin sheet with minimized cracking even when machined and a method for manufacturing the resin sheet. The resin sheet according to the present invention is a machined resin sheet, wherein a cut end face of the resin sheet has a ratio RR/DR of a normal reflectance RR to a diffuse reflectance DR of 0.10 or greater. The method for manufacturing the resin sheet comprises: forming a workpiece by stacking a plurality of resin sheets; and using a cutting means, including a rotary shaft extending in the stacking direction of the workpiece and a cutting blade which forms the outermost diameter of the body that rotates about the rotary shaft, such that the cutting blade of the cutting means is contacted against the outer peripheral surface of the workpiece to cut the outer peripheral surface of the workpiece. According to one embodiment, the cutting blade has an HV hardness of 7000 or greater, and the ratio F/T of a feeding speed F of the cutting means to the number of times of contact