Liquid blow molding method
AssigneeYoshino Kogyosho Co., Ltd.
InventorsMitsuru Shiokawa, Yuichi Okuyama
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Abstract
A liquid blow molding method of molding a liquid container containing a content liquid from a preform, includes a nozzle engagement step of engaging a blow nozzle with a mouth portion of the preform; a molding step of molding the preform into a container of a predetermined shape by supplying a pressurized liquid into the preform; a suck-back step of sucking back a predetermined amount of liquid from the inside of the container to a supply channel by operating a pump in a reverse direction with the container put in the upside-down posture while the blow nozzle is engaged with the mouth portion; and a nozzle separation step of separating the blow nozzle from the mouth portion with the container put in the upright posture.
Claims18
A liquid blow molding method of molding a liquid container containing a content liquid from a synthetic resin preform, the method comprising:
- a nozzle engagement step of engaging a blow nozzle connected to a pump through a supply channel with a mouth portion of the preform;
- a molding step of molding the preform into a container of a predetermined shape by supplying a liquid that is pressurized from the pump into the preform through the supply channel and the blow nozzle;
- a suck-back step of sucking back a predetermined amount of the liquid from an inside of the container to the supply channel by operating the pump in a reverse direction by putting the container molded in the molding step in an upside-down posture while the blow nozzle is engaged with the mouth portion;
- transition the container between the upside-down posture and an upright posture;
- and
- a nozzle separation step of separating the blow nozzle from the mouth portion with the container in the upright posture, after the suck-back step.
Dependencies are inferred from the claim text.