| 摘要 |
A blow molding device includes a blow nozzle (4) to be inserted tightly into a mouth tube section (32) of preform (31) when the preform (31) is inserted in a mold (1). The blow molding device also includes a pressurized liquid feeding unit (22) and feeds a pressurized liquid (L) from the pressurized liquid feeding unit (22) into the preform (31) through the blow nozzle (4) to form a container (41) into an expanded shape along a cavity of the mold (1). A valve mechanism (Vm), provided at a downstream end of a feed channel for the liquid (L) in the blow nozzle (4), can open and close the feed channel so that when the valve mechanism (Vm) is in a closed state, the liquid (L) circulates between the feed channel and the pressurized liquid feeding unit (22), and when the valve mechanism (Vm) is in an open state, the pressurized liquid (L) is fed through the feed channel into the preform (31). |
