Method of manufacturing liquid container
AssigneeYoshino Kogyosho Co., Ltd.
InventorToshimasa Tanaka
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Abstract
A method of manufacturing a liquid container in which a liquid is stored in a storage space of the container including a mouth, a body and a bottom, the body having a lateral folding line portion being foldable when the body is flattened in a thickness direction and extending in a circumferential direction of the body, the method including a liquid blow molding step of molding a container filled full with a liquid in a storage space by placing a preform in a mold and performing liquid blow molding; and a headspace forming step of forming a headspace in which, by separating the container filled with a liquid from the container, the body is deformed in a direction in which a thickness is increased in an area of the lateral folding line portion and a volume of the storage space is increased.
Claims18
A method of manufacturing a liquid container in which a liquid is stored in a storage space of the container, the container including a mouth, a body and a bottom, the body including a lateral folding line portion that is configured to be foldable when the body is flattened in a thickness direction, the lateral folding line portion extending in a circumferential direction of the body, the method comprising:
- performing liquid blow molding on a preform placed in a mold to form the container in which the storage space is filled with the liquid;
- and
- forming a headspace in the container by separating the container filled with the liquid from the mold such that the body is deformed by inner pressure of the liquid in the thickness direction so that a thickness of the body is increased in an area of the lateral folding line portion and a volume of the storage space is increased.
A method of manufacturing a liquid container in which a liquid is stored in a storage space of the container, the container including a mouth, a body and a bottom, the body including a bellows portion configured to be expandable and contractible in a direction perpendicular to a central axis line of the body, the method comprising:
- performing liquid blow molding on a preform placed in a mold to form the container in which the storage space is filled with the liquid;
- and
- forming a headspace in the container by separating the container filled with the liquid from the mold such that the bellows portion is expanded by inner pressure of the liquid and a volume of the storage space is increased.
Dependencies are inferred from the claim text.