BLOW MOLDING DEVICE

摘要

A blow molding device comprising: a blow molding mold (1) in which a bottomed cylindrical preform (PF) is mounted; a blow nozzle (13), which fits together with the cylindrical opening (PFb) of the preform (PF) that is mounted in the mold (1); and a pressurized liquid-supplying unit (22) for supplying a pressurized liquid (L) to said blow nozzle (13). The blow molding device molds the preform (PF) into a shape conforming to the cavity (2) of the mold (1) by filling the liquid (L) into the preform (PF) through the blow nozzle (13). The blow molding device is characterized in being provided with a de-aeration mechanism unit (30), which is connected to the blow nozzle (13), and in the liquid (L) being filled into the preform (PF), which is mounted in the mold (1), through the blow nozzle (13) after the air inside the preform (PF) has been sucked out by the de-aeration mechanism unit (30).