| 摘要 |
PURPOSE:To highly accurately produce a hollow formed body having a partition wall or projected parts within the product. CONSTITUTION:The blow molding concerned is performed by carrying out a process, in which parison 40 is discharged between a plurality of mold members under open state, a process, in which a slide core 26 provided at least in one mold member is advanced so as to locally heat-fuse side walls opposing to each other together in the parison, a process, in which respective mold members 22 and 23 are clamped together, and a process, in which the side core 26 retreated, in the order named. In addition, before the blowing of pressurized air in the parison 40 or during the blowing, air is extracted at least from the portion corresponding to the heat-fused portion of the parison 40 through a suction through hole 30 provided on the slide core 26. |
