Liquid blow molding method
AssigneeYoshino Kogyosho Co., Ltd.
InventorsMitsuru Shiokawa, Yuichi Okuyama
Life of this patent
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Abstract
A liquid blow molding method of molding a synthetic resin preform having a mouth portion into a liquid container of a predetermined shape, including: an air-liquid replacement step of supplying a liquid into the preform from the mouth portion through a blow nozzle and discharging the air inside the preform to the outside; an air-liquid separation step of separating the air from the liquid inside the preform by vibrating the preform; and a blow molding step of molding the preform into a container of a predetermined shape by supplying a pressurized liquid into the preform from the mouth portion through the blow nozzle, after the air-liquid separation step.
Claims8
A liquid blow molding method of molding a synthetic resin preform having a mouth portion into a liquid container of a predetermined shape, the method comprising:
- an air-liquid replacement step of supplying a liquid into the preform from the mouth portion through a blow nozzle and discharging the air inside the preform to an outside;
- an air-liquid separation step of separating the air from the liquid inside the preform by vibrating the preform without stretching the preform by a pressurized liquid;
- and
- a blow molding step of molding the preform into a container of a predetermined shape by supplying, after the air-liquid separation step, the pressurized liquid into the preform from the mouth portion through the blow nozzle,
- wherein the liquid supplied into the preform in the air-liquid replacement step is a content liquid contained in the liquid container after molding.
Dependencies are inferred from the claim text.