| 摘要 |
A producing apparatus is used, in which a metallic endless belt (15) having a mirror face is provided to be wound on and between a first cooling roller (13), covered with an elastic member, and a second cooling roller (14), and a third cooling roller (16), having a mirror face on its surface and touching the first cooling roller (13) through a molten thermoplastic resin sheet (11) and the endless belt (15), is provided to hold the molten thermoplastic resin sheet (11) pressed with the endless belt (15). While the temperature of the third cooling roller (16) and the endless belt (15) directly touching the molten thermoplastic resin sheet is retained to be less than 50 DEG C and more than zero, the molten thermoplastic resin sheet (11) is guided into the area between the first (13) and third cooling rollers (16) to touch the endless belt (11), touching the first cooling roller (13), and the third cooling roller (14) at approximately the same time, and the molten thermoplastic resin sheet (11) is touch-rolled on the face and cooled by the first (13) and third cooling rollers (16) during the elastic deformation of the elastic member, caused by a pressing force between the first (13) and third cooling rollers (16), and subsequently, the molten thermoplastic resin sheet (11) is cooled by touch-rolling the face to the third cooling roller (16) with the endless belt (15). |
