Discma Ag

Yoshino Kogyosho Co., Ltd.

Shinichi Tabata

Mitsuru Shiokawa

Toshimasa Tanaka

Shigeki Morikami

Kenichi Suyama

Hideaki Hoshino

Tamotsu Toyoda

Nobuyuki Tamura

Takao Iizuka

Masaaki Sasaki

Yuichi Okuyama

Yusuke Ishii

Tadayori Nakayama

A container production method by liquid blow molding has a liquid blow molding step of supplying a pressurized liquid into a preform disposed in a metal mold to mold the preform into a container having a trunk that has a flat shape in a plan view and holds the liquid; and a transferring step of taking the container out from the mold and transferring the container in an approximate short axis direction of the trunk.

Container production method by liquid blow molding

A liquid container manufacturing method includes: a nozzle fitting step of fitting a blow nozzle into a mouth of a preform; a liquid replacing step of replacing the air in the preform with a liquid by supplying a predetermined amount of liquid from a liquid supply port to the preform with a discharge port open; and a liquid blow molding step of molding the preform into a liquid container by supplying a pressurized liquid from the liquid supply port into the preform after the discharge port is closed.

Liquid container manufacturing method

A container manufacturing method includes: a liquid discharge step in which a predetermined amount of liquid (L) in the container (C) is discharged to the outside by supplying pressurized air from air holes () provided in a blow molding mold () to a cavity () and pushing an outer surface of the container (C) after molding by the air; and a headspace forming step in which a headspace (HS) is formed in the container (C) by separating a filling nozzle () from a mouth portion (Ca) of the container (C) in a state in which a predetermined amount of liquid (L) is discharged to the outside.

Container manufacturing method

A liquid blow molding apparatus for liquid blow molding a resin preform into a container having a prescribed shape. The apparatus includes a blow molding mold in which the preform is disposed; a blow nozzle that engages in an opening of the preform; a pressurized liquid supply that supplies a pressurized liquid to a supply path that is connected to the blow nozzle; and a seal member that is provided inside the supply path and opens and closes the supply path with respect to the blow nozzle. The pressurized liquid supply is configured to start supplying the pressurized liquid to the supply path after the seal member has begun to open.

Liquid blow molding apparatus and liquid blow molding method

A liquid blow molding apparatus comprises: a mold () in which a preform () is to be placed; and a nozzle unit () having a supply port () capable of supplying a liquid from above into the preform () placed in the mold (), wherein the nozzle unit () includes a seal body () that is movable among a closed position at which supply of the liquid through the supply port () is blocked, a first open position at which supply of the liquid through only part of the supply port () in a circumferential direction is allowed, and a second open position at which supply of the liquid through the whole supply port () in the circumferential direction is allowed.

A construction that prevents liquid from dripping from a nozzle and adhering to a product when the nozzle is separated from a mouth of the product after liquid-blow molding. A preform includes a mouth, a body, and a neck support portion, and is provided with a step surface on an inner peripheral face adjacent to the neck support part. A liquid blow molding apparatus includes a nozzle that is inserted in the mouth of the preform, a pressurized liquid-supply unit that supplies pressurized liquid to the nozzle, and a sealing member that is formed in a cylinder and fits on an outer peripheral face of the nozzle abuts the step surface, in an axial direction, when the nozzle is inserted in the mouth of the preform to seal the gap between the nozzle and the inner peripheral face of the preform.

Liquid blow molding apparatus and preform

A preform for biaxial stretching blow molding. The preform being formed into a closed-end cylinder by direct blow molding and which is to be shaped into a container using a pressurizing liquid medium. The preform has either a single-layer or a multilayer structure constituted of one of a polyethylene resin having an MFR of 1.0-1.5 g/10 min. or a polypropylene resin having an MFR of 0.8 to 2.3 g/10 min.

Preform for biaxial stretching blow molding, and container

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.

A blow molding apparatus that supplies a pressurized liquid into a bottomed tubular preform fitted to a mold used for blow molding and molds the preform into a shape conforming to a cavity of the mold, the blow molding apparatus including: a blow nozzle fitted to a mouth tubular portion of the preform; a plunger pump configured to supply the pressurized liquid into the preform through the blow nozzle; and a control device configured to change an actuation rate and an actuation force of the plunger pump during the supply of the pressurized liquid into the preform to regulate a peak pressure of the liquid supplied into the preform to be from 3.5 MPa to 5.0 MPa.

Blow molding apparatus and blow molding method

A composite container having a paper label adhered without adhesives to a container body at at least one of the top end edge outer circumferential surface of the container body and the bottom end edge outer circumferential surface of the base part of the container body. Adherence of the paper label to the container body being effectuated by disposing the paper label in a mold and biaxial stretch blow shaping a preform into the container body with a liquid as a pressurized medium.

Composite container

A blow molding mold is adapted to be mounted to a blow molding device and having a cavity surface. The blow molding device has a pressurized liquid supply function of supplying a pressurized liquid to stretch the preform toward the cavity surface and also has a head space defining function of defining head space in the container by drawing back a part of the liquid filled into the container through a blow nozzle or by withdrawing a stretching rod from the container filled with the liquid. The cavity surface includes a bottom forming surface, a trunk forming surface, a shoulder forming surface, and a mouth forming surface, and the trunk forming surface includes a flattened portion that, in the transverse section, has a flattened shape.

Blow molding mold

A pressure is accumulated in advance in a cylinder (), which is used for conversion to air for the outside of a mouth, with an opening-closing valve (V) of the cylinder () being closed, and when a pressurized liquid (L) is supplied into a preform (PF) through a blow nozzle () by actuating a plunger pump () and by opening a sealing body (), the opening-closing valve (V) of the cylinder () is opened to thereby apply the pressure accumulated in the cylinder () to the liquid (L) supplied into the preform (PF).

Blow molding apparatus

A blow molding device includes a blow molding mold to which a preform is fitted, a blow nozzle that is fitted to a mouth tubular portion of the preform, and a pressurized liquid supply unit configured to supply a pressurized liquid to the blow nozzle, the preform being to be molded into a shape conforming to a cavity of the mold by filling the liquid into the preform through the blow nozzle. The blow nozzle includes a central hole and a plurality of peripheral holes having an inner diameter smaller than an inner diameter of the central hole and arranged to surround the central hole. The liquid is filled into the preform through the central hole and the plurality of peripheral holes.

Blow molding device

A blow molding device includes a blow molding mold to which a bottomed tubular preform is fitted, a blow nozzle that is fitted to a mouth tubular portion of the preform fitted to the mold, and a pressurized liquid supply unit configured to supply a pressurized liquid to the blow nozzle. The preform is to be molded into a shape conforming to a cavity of the mold by filling the liquid into the preform through the blow nozzle. The blow molding device further includes: a deaeration mechanism that is connected to the blow nozzle. The liquid is filled into the preform through the blow nozzle after air that is present within the preform fitted to the mold is sucked out by the deaeration mechanism.

To prevent core misalignment when performs are stretched during blow molding, provided is a blow molding device that blow molds a preform into a container in a forming mold. The blow molding device includes a support pin that is disposed in the forming mold. The support pin includes a head that supports a bottom portion of the preform, and a shaft that is connected to the head and that is displaceable upward and downward in a direction of an axis of the preform. The head is provided, at one end thereof supporting the bottom portion of the preform, with a concave portion for receiving at least a part of the bottom portion.

Growing community of inventors

Tokyo, Japan

Shinichi Tabata