| 摘要 |
The present invention prevents liquid from dripping from a nozzle (17) and adhering to a product or the like when the nozzle (17) is separated from an opening part (2) after liquid blow molding. A preform (1) is configured to have the opening part (2), a main body part (3), and a neck support part (4) and configured to have a step surface (5) on an inner peripheral surface thereof in a section where the neck support part (4) is provided. A liquid blow molding apparatus (10) is configured to have the nozzle (17) to be inserted in the opening part (2) of the preform (1), a pressurized liquid supply section (19) that supplies pressurized liquid to the nozzle (17) inserted in the opening part (2), and a sealing member (24) that is formed in a cylindrical shape fitting on an outer peripheral surface of the nozzle (17) and that, when the nozzle (17) is inserted in the opening part (2), abuts in an axial direction on the step surface (5), which is provided on the inner peripheral surface of the preform (1), at an axial end face to seal the gap between the nozzle (17) and the inner peripheral surface of the preform (1). |
