| 摘要 |
PURPOSE:To insert a parison positively, and to decrease the strain of a coupled section near both end sections at the time of blowing by mounting a joint leg supporting an end section of the parison extruded near both ends of a groove surface of a long-sized molding die and placing the cylindrical material on the leg. CONSTITUTION:The joint legs C, the length thereof is equal to the clearances with the surface of a molding groove 2 of the ends B1 of the cylindrical materials and thiciness thereof is smaller than the diameters of the ends B1 of the cylindrical materials, are placed at both left and right of the molding groove 2 of the molding die 1. The ends B1 of the cylindrical materials are placed on the joint legs C in approximately horizontal shapes, the parison a is poured out continuously from a nozzle 5, and moved along the molding groove 2, the parison set into the groove, a molding die 3 is joined and one end of the parison is is cut off, compressed air b is injected from the other end, and the hollow body A formed by unifying the ends B1 of the cylindrical materials and the joint legs C is obtained. |
