| 摘要 |
PURPOSE:To easily perform the integral molding of an interior part, by allowing the interior part to be present in a mold in a state made small as compared with the size at the time of the use in a hollow molded product and surrounding the said part by the parison extruded from a core to place the same under heating. CONSTITUTION:Two hooks 9 are fixedly provided to the core 4 of a blow molding machine to respectively fix one ends of ropes 10 and other ends of said ropes 10 are connected to a buffle plate 11 as an interior part to support said plate in the air from above. The buffle plate 11 is molded from a shape memory alloy or resin and made small in a state bent into an almost L-shape at room temp. Next, when the heated molten thermoplastic resin is extruded to the outer peripheral part in a predetermined length from the conical mold gap A formed between the core 4 and die 5 of the blow molding machine to mold a parison 6, the buffle plate 11 suspended in the parison is returned to a flat state by the heat of the parison 6 and, two split molds 12, 13 are allowed to approach the parison 6, the parison 6 is successively brought into contact with the outer peripheral part of the buffle plate 11. Therefore, the thickness of the molded product becomes stable and molding becomes easy. |
