Arisawa Mfg. Co., Ltd.

Mitsui Minings & Melting Co., Ltd.

Jamco Corporation

Mitsubishi Heavy Industries Limited

Toyota Jidosha Kabushiki Kaisha

Sumitomo Metal Industries, Inc.

Nippon Stainless Steel Kozai Co., Ltd

Arisawa Mfg., Ltd.

Hiroshi Tanaka

Masaaki Hirai

Yuichi Kawai

Hiroshi Horigome

Kenji Tanaka

Nozomu Kawasetsu

Yoshinori Nonaka

Kozo Saitoh

Takahiro Iiyoshi

Takashi Yamamoto

Sumio Izumi

Sakiko Tomonaga

Atsuhiko Kuroda

Ikuo Nagano

Takayoshi Hori

Akira Uchiyama

Tatsuya Nagahama

Hiroko Suzuki

Mikio Kuroda

Tetsuya Kobayashi

Isamu Kanekatsu

Yutaka Kiminami

Satoru Fujita

Yoshihiko Sugano

Hidemi Sawada

Yuuichi Kawai

Koji Ando

Youichi Toyooka

An object of the present invention is to provide an innovative and highly practical connection member for a vehicle structure. The present invention is a connection member for a vehicle structure equipped with at least two connection sections () that are used in the vehicle structure and that connect appropriate sites within the vehicle structure, the connection member for a vehicle structure being characterized in having a layered structure section () configured by impregnating a layered body () in which a plurality of fiber bodies () have been layered with a matrix resin and curing the impregnated layered body, and employing, as the fiber bodies (), bodies in which bundles of unidirectionally aligned carbon fibers () have been interwoven with thermally fusible fibers ().

Connection member for vehicle structure

Provided is a highly practical pressure vessel in which there is minimal inside diameter deformation even if openings in a center inlet/outlet part are large, and there is little pressure-induced elongation from a center to both ends. This pressure vessel is composed of a tube body made of a fiber-reinforced resin, wherein: a center inlet/outlet part that lets a liquid in or out is provided to a tube-body-axial center part on a peripheral surface of the tube body; end-part inlet/outlet parts that let a fluid in or out are provided to tube-body-axial end parts of the tube body; the tube body is configured from a helical layer of which fibers are inclined at an angle of from ±40° to less than ±50° relative to a tube-body-axial direction, a reinforcing layer of which fibers are inclined at a greater angle than the helical layer relative to the tube-body-axial direction, and a seal layer constituting an innermost layer; a breakaway part that breaks away circumferentially outward from the seal layer is provided to a position on the helical layer where the center inlet/outlet part is provided; the reinforcing layer is configured from an inward reinforcing layer and an outward reinforcing layer provided respectively to inward and outward sides of the helical layer so as to enclose the breakaway part of the helical layer therebetween; and the center inlet/outlet part is provided so as to penetrate the inward reinforcing layer, the breakaway part of the helical layer, and the outward reinforcing layer.

Pressure vessel

The present invention provides a prepreg that has high impact resistance despite being an all-carbon-fiber FRP (CFRP), the prepreg moreover enabling a molding time to be set to five minutes or less and making it possible to reduce molding costs. This prepreg is obtained by impregnating carbon fiber with a matrix resin comprising a mixture of a thermoplastic resin, a thermosetting resin, and a curing agent, wherein: the thermoplastic resin is a phenoxy resin; the thermosetting resin is a urethane acrylate resin; the thermoplastic resin and the thermosetting resin are compounded in a mass ratio of 15:85-35:65 (thermoplastic resin/thermosetting resin); and the curing agent causes cross-linking to occur due to a radical polymerization reaction, and is formed so as to include first and second peroxides having mutually different initiation temperatures, initiation of the second peroxide starting at a temperature at which termination of the first peroxide occurs.

Prepreg and method for manufacturing molded prepreg article

Provided is a pressure vessel able to sustain a circular shape without deforming to ellipsoidal shape due to machining of side port apertures therein, and maintain pressures as high as 800-1,200 PSI. The pressure vessel is intended for use in seawater desalination by reverse osmosis, and comprises a pipe body () formed by filament winding (FW), and is furnished with an occluding cover () at each end of the pipe body (), the peripheral surface of the pipe body being furnished, inward from the occluding covers (), with inflow/outflow parts () through which the fluid flows in or out. The pipe body () is constituted by a helical layer (), hoop layers, and a seal layer () furnished as the innermost layer. The helical layer () is furnished with a divergent part () diverging away from the seal layer () and extending from a location outward from the occluding cover () to a location inward from the inflow/outflow part (). The hoop layers are constituted by a first hoop layer () furnished between the divergent part () and the seal layer (), and a second hoop layer () furnished at the outer circumference of the helical layer (), and extending from a location outward from the occluding cover () to a location inward from the inflow/outflow part ().

Internal pressure vessel

In a fiber-reinforced resin pipe for introducing and discharging a liquid, a pipe () is provided with a plurality of introduction/discharge parts () for introducing or discharging liquid that are arranged at intervals in the axial direction from a peripheral surface of the pipe.

Fiber-reinforced resin pipe

A highly practical tube body for a pressure transducer is provided which has excellent pressure resistance, corrosion resistance, and tensile strength; which can be manufactured at low cost in comparison with cases of using stainless steel; and which makes it possible to keep inside diameter precision high. In this tube body for a pressure transducer, the pressure applied to the interior is varied periodically, and a seal layer () is provided to the internal peripheral surface of a tube body () made of a fiber-reinforced resin composed of fibers wound in layers.

Tube body for pressure transducer

A sandwich panel includes a middle material () and a surface material () that are laminated with a hollow columnar core (). The middle material () is composed of a set of unidirectional fiber bodies () each of whose fibers are aligned in one direction, and bonding layers formed by woven fiber bodies (). The woven fiber body () includes a warp yarn and a woof yarn that is orthogonal to the warp yarn, and the yarns are woven, and the woven fiber body () is formed so that any one of the warp yarn and the woof yarn is substantially parallel to the edge of the sandwich panel, and the other of the warp yarn and the woof yarn is substantially orthogonal to the edge of the sandwich panel.

Sandwich panel

There is provided a lightweight sandwich panel of exceptional utility, which satisfies the flexural strength and in-plane shear strength requirements for an inner wall material used in aircraft. The sandwich panel comprises a laminating material in which a plurality of fiber bodies is laminated, and a surface material, the laminating material and the surface material being laminated in the stated order from the inside to the outside on the upper and lower surfaces of a hollow columnar core. The laminating material comprises at least four unidirectional fiber bodies each of which has fibers aligned in a uniform direction and is laminated so that each of the fiber directions thereof is at approximately 0&#xb0;, +45&#xb0;, &#x2212;45&#xb0;, and 90&#xb0;, respectively, in relation to one edge of the sandwich panel. The unidirectional fiber bodies are stitched together using a stitching yarn.

A sandwich panel that has excellent practicality as an inner wall material used in aircraft, for example, whereby the abovementioned requirements of flexural strength, peel strength, and in-plane shear strength can be satisfied while having reduced weight. A sandwich panel in which a middle materialand a surface materialthat are each formed by laminating a plurality of fiber bodies are laminated from inside to outside on the upper and lower surfaces of a hollow columnar core, wherein the middle materialis composed of a set of unidirectional fiber bodieswhose fibers are aligned in one direction, fibers in a first unidirectional fiber bodyare in a direction that is substantially parallel to an edge of the sandwich panel, fibers in a second unidirectional fiber bodyare in a direction that is substantially orthogonal to an edge of the sandwich panel, and bonding layershaving a resin content ratio of 50% or higher are provided between the unidirectional fiber bodiesand between the hollow columnar coreand an inside unidirectional fiber body

To provide a fiber reinforced resin sleeve that is superior in mechanical strength in low cost and easily without enlarging the sleeve and increasing the weight of the sleeve, a method for manufacturing an internal pressure container in which both end portions of a fiber reinforced resin sleeveformed by continuously winding a fiber in a filament winding method with both ends having larger diameters are closed by closure lids, and the closure lidsare supported by retainer ringscoupled to the sleeve, comprising the following steps of: continuously winding the fiber, impregnated with the resin, on a mandrel substantially in a perpendicular direction to an axial direction of the mandrel to form a first layer F; setting the first layer F so that a distal end is located in a position at a predetermined position L from an end of the sleeveand a proximal end is located in a position inside of the closure lidand the retainer ring; subsequently continuously winding the fiber on the first layer F at an acute angle to the axial direction of the mandrel to form a second layer S over an entire range of the sleeve; subsequently continuously winding the fiber on the second layer S substantially in the perpendicular direction to the axial direction of the mandrel to form a third layer T wound only on the end portion of the sleeve; and after curing the resin, providing the closure lidand the retainer ringto the sleeveformed by removing the mandrel away.

Internal pressure container and its manufacturing method

The purpose is to provide a cathode electrode for manufacturing an electrodeposited copper foil which is possible to be continuously and stably usable for a long duration of 3000 hours or longer to subsequently lessen the frequency of maintenance work execution as low as possible and to contribute to lower the running cost of the electrodeposited copper foil manufacture. As the means for achieving the purpose, a cathode electrode made of a titanium material is employed for obtaining an electrodeposited copper foil using an electrolytic copper solution and the titanium material having 7.0 or higher crystal grain size number and 35 ppm or lower initial hydrogen content is used for manufacturing the cathode electrode for manufacturing an electrodeposited copper foil. Further, also provided is a manufacturing method of the titanium material to be employed for the cathode electrode made of a titanium material.

Titanium-made cathode electrode for producing electrolytic copper foil, rotary cathode drum using the titanium-made cathode electrode, method of producing titanium material using titanium-made cathode electrode and method of correcting/working titanium material for titanium-made cathode electrode

A method for separating large-sized film-like plastics, such as polypropylene or polyvinyl chloride, which comprises placing the plastics in a separation tank containing an aqueous liquid medium and introducing gas bubbles into the tank thereby to cause the gas bubbles to adhere to the surface of the plastics. The buoyancy of the gas bubbles causes the plastics to rise to the medium surface. Addition of a flotation agent and/or a wetting agent further promotes the floating of the plastics.

Method for separating large-sized film-like plastics

In the flotation of oxide ores, a method of flotation characterized by applying d-c current to the oxide ore slurry as a pre-treatment prior to flotation.

Growing community of inventors

Joetsu, Japan

Hiroshi Tanaka