Discma Ag

Yoshino Kogyosho Co., Ltd.

Nobuyuki Tamura

Sumito Sato

Takeshi Nagashima

Shigeki Morikami

Yuichi Okuyama

Toshimasa Tanaka

Shinichi Tabata

Mitsuru Shiokawa

Kenichi Suyama

Kazuhiko Shimizu

A method of manufacturing a composite container. The method includes providing a paper label, and a preform; providing a molding die equipped with a closed, cylindrical lower mold and an upper mold composed of a plurality of split-mold segments; arranging the paper label in the lower mold; arranging the preform between opened split-mold segments; moving one or both of the lower mold with the paper label and the upper mold with the preform in a direction towards each other to close the molding die; implementing blow-molding on the preform in the molding die; and opening the molding die to release the composite container.

Composite container manufacturing method, molding die, and composite container

Provided is a method for manufacturing a container containing a content fluid, including: a molding step of stretching a bottomed tubular preform that is heated to a temperature at which the preform is stretchable so as to form the container by means of pressure of the content fluid injected into the preform through a mouth portion; a sealing step of sealing the content fluid by fitting a cap body to the mouth portion; and a pressurizing step of increasing an inner pressure of the container, wherein the container includes an invertible deforming portion that is freely invertible and deformable toward an inside of the container, and in the pressurizing step, the inner pressure of the container is increased by reducing a volume of the container by inverting and deforming the invertible deforming portion toward the inside of the container.

Method for manufacturing a container containing a content fluid, a method for placing an inside of a container under a positive pressure, a filled container, a blow molding method, and a blow molding device

Provided is a method for manufacturing a synthetic resin container, including: after the shaping of a container, drawing back a liquid inside the container to a pressurized liquid feeding unit side by a suckback mechanism disposed at a predetermined position in a feeding channel of the liquid from the pressurized liquid feeding unit to a mouth tube portion of a preform; closing the feeding channel by means of a valve mechanism disposed on the downstream side of the suckback mechanism; introducing a gas into the container so that the volume reduction deformation of the container resulting from the drawing back of the liquid is restored to its original shape; and adjusting a headspace inside the container with the amount of volume change associated with the volume reduction deformation.

Blow molding device and method for manufacturing a container

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.

Blow molding device

To regulate, in blow molding device using liquid, such as beverage, cosmetic product, and pharmaceutical product, filled in final product as pressurized liquid, head space in container which is filled with content liquid during molding to be predetermined volume, provided is blow molding device including blow nozzle configured to tightly communicate with mouth tubular portion of preform. In state where rod is disposed to be inserted into blow nozzle and where tip portion of rod is inserted into preform, pressurized liquid is supplied into preform via tubular introduction path formed by blow nozzle and rod, thereby expandingly shaping container in accordance with cavity of metal mold. When container is shaped and supply of pressurized liquid is stopped, rod is disinserted from container, and according to shape and insert position of tip portion of rod, head space of shaped container that is filled with liquid is regulated to be predetermined volume.

Blow molding device and a method for manufacturing a container

A blow molding device, having: a mold; a blow nozzle tightly communicating with a mouth tubular part of a preform when the preform fitted in the mold; and a stretch rod, the blow molding device imparting shape to a container by longitudinally stretching the preform by means of the stretch rod and stretching the preform into an expanded shape by means of a pressurized liquid fed, via the blow nozzle, from a pressurized liquid feeding part separately provided, in which the blow nozzle has a support part for supporting the posture of the stretch rod, and a filling head part communicating with the mouth tubular part of the preform, the filling head part having a feed channel formed therein in the axial direction; and the support part and the filling head part are configured to be detachably coupled to each other in the vertical direction.

To effectively prevent a mouth portion of a preform from being deformed and enlarged in diameter during blow molding, provided is a blow molding device that includes: a blow mold inside which a cavity is provided for accommodating therein a preform, except for a mouth portion which is an orifice end of the preform, the preform being preformed in a bottomed tubular shape; a blow nozzle provided to supply a pressurized fluid into the preform through the mouth portion of the preform; a partition wall member that tightly surrounds an outer wall surface of the mouth portion of the preform; with space being formed between the partition wall member and the outer wall surface; and a pressurized fluid supply unit that supplies a pressurized fluid into the space during blow molding.

Blow molding device and a method for manufacturing a blow molded container

To effectively prevent occurrence of stretching unevenness during blow molding using a liquid as the pressure medium without significantly modifying the structure of a device, provided is a blow molding device including: a metal mold used for blow molding; and a blow nozzle that tightly communicates with a mouth tubular portion of a bottomed tubular preform, the liquid as the pressure medium being supplied into the preform through the blow nozzle. The blow nozzle is provided, at a lower end portion thereof, with an engaging tubular piece that is inserted into the mouth tubular portion, and the engaging tubular piece has a length by which a lower end of the engaging tubular piece extends further downward than a neck ring in a state where the blow nozzle is in communication with the mouth tubular portion, the neck ring being provided around a lower end of the mouth tubular portion.

A blow molding device includes a blow nozzle to be inserted tightly into a mouth tube section of preform when the preform is inserted in a mold. The blow molding device also includes a pressurized liquid feeding unit and feeds a pressurized liquid from the pressurized liquid feeding unit into the preform through the blow nozzle to form a container into an expanded shape along a cavity of the mold. A valve mechanism, provided at a downstream end of a feed channel for the liquid in the blow nozzle, can open and close the feed channel so that when the valve mechanism is in a closed state, the liquid circulates between the feed channel and the pressurized liquid feeding unit, and when the valve mechanism is in an open state, the pressurized liquid is fed through the feed channel into the preform.

Growing community of inventors

Tokyo, Japan

Nobuyuki Tamura