Liquid blow molding method and liquid blow molding apparatus
AssigneeYoshino Kogyosho Co., Ltd.
InventorsYuichi Okuyama, Mitsuru Shiokawa
Life of this patent
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Abstract
A bottomed tubular-shaped preform is molded into a liquid-containing container holding a content liquid, by supplying, through a first supply path, a first liquid at a predetermined pressure into the preform that has been heated to a predetermined temperature to liquid blow mold the preform and by supplying, through a second supply path that is different from the first supply path, a second liquid into the preform after or simultaneously with the supply of the first liquid.
Claims5
A liquid blow molding method for molding a bottomed tubular-shaped preform into a liquid-containing container in which a content liquid is held, the liquid blow molding method comprising:
- a first supply step of supplying, through a first supply path, a first liquid at a predetermined pressure into the preform that has been heated to a predetermined temperature to liquid blow mold the preform;
- a second supply step of supplying, through a second supply path that is different from the first supply path, a second liquid into the preform after or simultaneously with the supply of the first liquid, wherein:
- the second liquid includes properties that prevent the first liquid and the second liquid from maintaining a uniform mixed state;
- a suck-back step, performed after the preform is liquid blow molded into the container having a predetermined shape in the first supply step, of sucking out a predetermined amount of the first liquid from the container that has been molded in the predetermined shape in the first supply step;
- and
- in the second supply step, the second liquid is supplied into the container from which the predetermined amount of the first liquid has been sucked out in the suck-back step.
A liquid blow molding method for molding a bottomed tubular-shaped preform into a liquid-containing container in which a content liquid is held, the liquid blow molding method comprising:
- a first supply step of supplying, through a first supply path, a first liquid at a predetermined pressure into the preform that has been heated to a predetermined temperature to liquid blow mold the preform;
- a second supply step of supplying, through a second supply path that is different from the first supply path, a second liquid into the preform after or simultaneously with the supply of the first liquid, wherein:
- the second liquid includes properties that prevent the first liquid and the second liquid from maintaining a uniform mixed;
- and
- a circulation step, performed before the first supply step, of circulating the first liquid between a tank configured to hold the first liquid and the first supply path.
Dependencies are inferred from the claim text.