| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the problem of delamination in a synthetic-resin laminated bottle body by biaxially stretching blow molding, and to provide the laminated bottle body with delamination suppressed effectively and a method for molding such a laminated bottle body. <P>SOLUTION: An injection molding machine has a plurality of blockade vertical rib pieces, which partition a middle channel in the peripheral direction into a plurality of channels, parallelly arranged in a range from a prescribed position of the annular middle channel forming an intermediate layer to a junction, in a multiple nozzle part in which a plurality of molten resins are piled up. Using the injection molding machine, over a prescribed height region, the intermediate layer is piled up between substrate layers, a longitudinal connection strip part with the substrate layers connected without the intermediate layer is parallelly extended/formed along the central axis direction, in the peripheral direction, and a preform is molded with the intermediate layer partitioned in the peripheral direction by the longitudinal connection strip part. <P>COPYRIGHT: (C)2010,JPO&INPIT |
