LIQUID BLOW MOLDING DEVICE AND LIQUID BLOW MOLDING METHOD

摘要

Provided is a liquid blow molding device and a liquid blow molding method. The device is configured to supply pressurized liquid (L) to a preform (PF) mounted to a mold (1) to mold the preform (PF) into a shape along a cavity of the mold (1), and includes a blow nozzle (13) fitted into a mouth portion (PFb) of the preform (PF), a plunger pump (31) configured to supply pressurized liquid to the preform (PF) through the blow nozzle (13) and a controller (33) configured to control operation of the plunger pump(31). The controller (33) controls operation of the plunger pump (31) by position control in which a plunger (31b) of the plunger pump (31) is moved from an original position to a predetermined final position with a predetermined operating force.