| 摘要 |
PURPOSE:To obtain a deep draw molded product having uniform wall thickness by a method wherein the suction part of a mold is allowed to protrude toward a hollow part from the side opposed to a hot plate and a resin sheet is sucked to the suction part and heated air is supplied through the holes of the hot plate in such a state that the central part of the resin sheet is sucked to the suction part to form a preliminarily expanded bottom part. CONSTITUTION:A resin sheet 40 is arranged in contact with a hot plate 10 and a mold is pressed to the resin sheet 40 on the side opposed to the hot plate 10 and the suction part 32 of the mold 14 is allowed to protrude toward the hollow part of the mold 14 from the side opposed to the hot plate 10 and the central part of the resin sheet 40 is sucked to the suction part 32 and, in this state, the suction part is retracted. Next, heated air is supplied from the holes 22 of the hot plate 40 while the resin sheet 40 is pulled up from the hot plate 10 to form a preliminarily expanded bottom part 52. The resin sheet 40 is separated from the suction part 32 to be taken out of the mold 14. |
