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US 10,518,461 B2Granted
Container production method by liquid blow molding
AssigneeYoshino Kogyosho Co., Ltd.
InventorsShinichi Tabata, Yusuke Ishii
Life of this patent
Estimating the term…
Abstract
A container production method by liquid blow molding. The method includes a head space forming step of forming a head space in the upper portion of a container, in which, with the container disposed in a cavity, a bottom panel portion molded into an upward convex shape on a bottom of the container is inverted by pushing it down with a pushing rod and is plastically deformed into a downward convex shape.
Claims12
A container production method by liquid blow molding, comprising:
- a liquid blow molding step in which, as a blow molding mold, one having a bottom mold portion that forms an upward convex inner surface on a bottom of a cavity of the mold is used, and a pressurized liquid is supplied into a resin preform to mold the preform into a container of a shape conforming to the inner surface of the cavity;
- and
- a head space forming step of forming a head space in an upper portion of the container, in which, with the container disposed in the cavity, a bottom panel portion molded into an upward convex shape on a bottom of the container is inverted by pushing it down with a pushing rod inserted from a mouth of the container and is plastically deformed into a downward convex shape, and simultaneously air is introduced into the container.
Dependencies are inferred from the claim text.