Toyo Seikan Kaisha, Ltd.

Kabushiki Kaisha Toshiba

Toyo Seikan Group Holdings, Ltd.

Kenjiro Tanaka

Isamu Takeda

Masayoshi Tanaka

Atsushi Yoneda

Eriko Kimotsuki

Kenichi Takahashi

Toshiki Sakaguchi

Kenji Yoshihiro

You Yamamori

Yuuichirou Katou

Daisuke Imoda

Shouzou Shintani

Koichi Narutaki

Yuzuru Maruyama

A plastic container including a container body () made from a colored olefin resin and a decorative layer () laminated on the outer surface thereof. The decorative layer includes a transparent adhesive resin layer (), a transparent polyester resin layer () which is the outer surface layer, and an intermediate gradation layer () including a portion of which the thickness gradually varies in the direction of height of the container. The gradation layer is formed of a transparent polyester resin blended with a coloring agent. The thickness of the container body varies in response to a change in the thickness of the gradation layer in a manner such that the thickness of the container body portion which is the total thickness of the thickness of the container body and the thickness of the decorative layer is not varied by the presence of the gradation layer.

Plastic container having excellent decorative appearance

In, for example, a direct methanol type fuelcell, fuel is allowed to be injected little by little when the fuel is injected and supplied from the outside to a fuel receiving part reduced in the amount of remaining fuel on the fuelcell body side and an electromotive part can be prevented from being damaged by keeping the pressure in the fuel receiving part at a fixed level or less when the fuel is injected. Specifically, when a fuel CL filled in a refuelling container C is injected into a fuel receiving part T in several lots, a fuel injecting operation is repeated in which the volume of the refuelling container C is shrunk and reduced to supply the fuel into the fuel receiving part T in a proper amount and then the original volume of the refuelling container is restored to thereby absorb the atmospheric gas in the fuel receiving part T, which makes it possible to inject fuel continuously without any hindrance to the injection of the fuel.

Refuelling container for fuelcell, method for refuelling, and holder for refulling container

A manufacturing method of a resin container includes continuously supplying a base material resin forming a container body from a main extruder, discharging from a discharge portion provided in a die head a sub-material supplied from a sub-extruder so that the sub-material joins the base material resin, extruding a parison from a slit portion opened on an end side of the die head, and blow-molding the parison, thereby forming a coating layer which covers the whole or a part of the container body by using the sub-material. A thickness reducing portion in which a thickness is continuously reduced is formed in the coating layer while adjusting a resin pressure in a supply path of the sub-material fed from the sub-extruder by performing suck-back control which pulls back the sub-material from the discharge portion at an arbitrary timing when joining the sub-material with the base material resin.

Manufacturing method of resin container

A manufacturing apparatus of a resin container includes a main extruder which supplies a base material resin, and a sub-extruder which supplies a sub-material. The sub-material supplied from the sub-extruder is discharged from a discharge portion provided in a die head so that the sub-material joins the base material resin continuously supplied from the main extruder. A parison is then extruded from a slit portion opened on an end side of the die head, and subjected to blow molding, thereby forming a coating layer which covers the whole or a part of a container body formed of the base material resin by using the sub-material. A suck-back mechanism which pulls back the sub-material from the discharge portion is provided between the sub-extruder and the die head, and the discharge portion is provided in the vicinity of the slit portion in-the die head.

Manufacturing apparatus of resin container

In a plastic container manufactured by melting blow molding a heated and molten parison extruded from an extruder, a mouthand/or a specified part of a bodyhas a thicker thickness than the body proper. One or more thick parts of the bodyare continuously or discontinuously formed over part or all a peripheral, height or helical direction of the body of the container. The container enjoys enhanced rigidity, appearance and functionality even when the thickness of its body is considerably reduced.

Plastic container

Growing community of inventors

Yokohama, Japan

Kenjiro Tanaka