| 摘要 |
PURPOSE:To provide a synthetic resin hollow object having substantially uniform thickness without seam unnecessary for an adhering step. CONSTITUTION:This method for rotatably molding a hollow object comprises the steps of pouring to seal a molding resin having fluidity in hollow molds 20, fixing the molds 20 to a rotary disk 8 at the end of a rotary shaft 7 rotating independently of a horizontally rotating shaft 1 disposed substantially perpendicularly to the center of the shaft 1, rotating the shaft 1 and the shaft 7 to rotate the disk 8 around the shaft 1 while rotating it around its own axis thereby to substantially uniformly adhere and cure inner molding resin to the inner surface of the molds 20, then disassembling the molds 20, and releasing the cured molded form. |
