The Japan Steel Works, Ltd.

Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Borealis Technology Oy

Nagase Co., Ltd.

Nihon Parkerizing Co., Ltd.

Shigeki Inoue

Seiji Takamoto

Tadamoto Sakai

Hiroaki Shintani

Kazuyuki Nakamura

Sadao Ikeda

Yoshio Taguchi

Hideki Tomiyama

Yoshitaka Kimura

Fumiaki Tsuda

Atsushi Tanaka

Makoto Kito

Naoyuki Murata

Junichi Iwai

Reo Fujita

Shinichi Ninomiya

Fumio Kobayashi

Kenji Inagawa

Carl-Gustaf Ek

Shoso Nishida

Makoto Ishikawa

Jari Aarila

Mitsuo Nagai

Akio Ono

Akira Yasue

Hiroshi Ito

Ryosuke Kawagoshi

Daigo Saga

Takayuki Yamazawa

Kazuya Tsuji

Takuya Niyama

Masamichi Ishibashi

Manabu Ikeya

Kyohei Yata

Tsukasa Shiroganeya

Masahiko Taketani

Takuya Iwamoto

Takashi Harada

Keiichiro Hirao

Yutaka Mizutani

Arne Syre

Akinobu Tsuneishi

Yuji Ikura

The fiber-reinforced resin intermediate material according to the present invention is formed by attaching a resin powder to an outer surface of a reinforcing fiber substrate formed of reinforcing fibers and heating it to melt the resin powder to the outer surface of the reinforcing fiber substrate so as to have an uneven shape derived from the resin powder and also have an opened void space.

Fiber-reinforced resin intermediate material, fiber-reinforced resin molded article, and method for producing fiber-reinforced resin intermediate material

[Problem] To provide an injection apparatus including a flow path switching mechanism that is simple in construction and low in cost. [Solution] An injection apparatus () includes a plasticization device () for melting resin, a first and second plunger injection devices () for measuring an amount of resin and injecting the resin, an injecting portion (), and a flow path switching block () that connects the plasticization device, the first and second plunger injection devices and the injecting portion together. A first to fourth connecting flow paths () and a flow path switching valve () are provided in the flow path switching block (). The plasticization device (), the first plunger injection device (), the injecting portion () and the second plunger injection device () are connected to the first to fourth connecting flow paths (), respectively. When the flow path switching valve () is switched to a first position, the first and second connecting flow paths () communicate with each other, and the third and fourth connecting flow paths () communicate with each other, whereas when the flow path switching valve () is switched to a second position, the first and fourth connecting flow paths () communicate with each other and the first and third connecting flow paths () communicate with each other.

Injection device provided with flow path switching block

There is provided with a screw that is inserted into a cylinder an inside of which a material is loaded, and is rotatably supported in both end portions on an upstream side and a downstream side, or in an end portion on the upstream side, in the cylinder; a first kneading blade including a plurality of first blades that are helically provided on the screw and send the material toward the downstream side with rotation of the screw; and a second kneading blade including a second blade that is helically provided on the screw and returns the material, which is sent toward the downstream side by the first kneading blade, toward the upstream side, the number of blades in the second blade being smaller than the number of blades in the first blade.

Material kneading apparatus and material kneading method

An object of the invention is to provide a granulation method and a granulation apparatus that can reduce the manufacturing costs of pellets. There is provided a granulation method which uses an underwater cutting (UWC) devicethat cuts a medium to be processed extruded from holes of a dieby using cutter blades provided in a circulation boxand conveys the cut pellets from the circulation boxwhile cooling the cut pellets by pellet cooling/transport water (PCW). The granulation method includes circulating the PCW and stopping the circulation of the PCW after pushing the cutter blades against the diewhile rotating the cutter blades, before the start of the granulation; storing a predetermined amount of PCW in the circulation boxby discharging the PCW; and heating the PCW, which is stored in the circulation box, up to 69&#xb0; C. or more.

Granulation method using an underwater cutting (UWC) device

There is provided a melting kneading devolatilizing extruder in which the surface renewability of a molten raw material is improved. The melting kneading devolatilizing extruder of the invention includes at least one surface renewable screw segment each including a plurality of discs that are arrayed such that a phase angle E, which is a deviation angle between the discs around an axis of a screw, is 0&#xb0;&#x3c;E&#x3c;90&#xb0; within a surface renewal region, and the surface renewable screw segment includes a void portion between the discs so that the discs are arranged at intervals in a direction of the axis of the screw.

Melting kneading devolatilizing extruder

An object of the invention is to improve capacity of process and not require a vent portion by an upper polygonal groove and a transition portion provided to a transport cylinder. A plastic extrusion method and apparatus according to the invention is a method and a configuration, in which an upper polygonal groove and a transition portion are integrally or separately provided to a transport cylinder so as to increase a frictional coefficient of an inner wall of the cylinder, to increase transport efficiency of a plastic raw material by a screw, and to allow at least gas, etc., pass toward a hopper side without using a vent portion.

Apparatus and method for plastic extrusion

A devolatilization performance prediction apparatus for a solution devolatilization process using a twin-screw extruder is described. The devolatilization performance prediction apparatus determines a flow state of the solution in the twin-screw extruder, simulates the solution devolatilization process based on the flow state, and predicts a performance of a devolatilization process conducted with the twin screw extruder based on the simulation.

Devolatilization performance prediction apparatus and devolatilization performance prediction method

A devolatilization simulation apparatus for screw extruders and a devolatilization simulation program for screw extruders can actually simulate the devolatilization process in a screw extruder. An extruder simulation system for simulating the conditions of devolatilization of an extruder by computationally determining the resin temperature, the pressure, the residence time, the filling ratio, the torque, the power, the solid-phase occupancy and the concentration of the volatile components in terms of distribution in the axial direction of the extruder from the configuration and the operating conditions of the extruder and the physical properties of the resin in the extruder comprising a means for arithmetically simulating the process where the concentration of the volatile components contained in the resin gradually falls as they are devolatilized by vent cylinders.

Devolatilization simulation apparatus for screw extruders and devolatilization simulation program for screw extruders

A screw extruder having a body forming a chamber of two barrels housing two counter-rotating axis-parallel rotors, a supply port for the material to be mixed in the chamber at one end of the body, a discharge port for discharging the mixed material at the other end of the body, a conveying section with screws for feeding the material from the supply port downstream to a mixing section which comprises at least two mixing zones, each mixing zone having at least one forward-conveying wing and at least one backward-conveying wing downstream of the forward-conveying wing on each rotor characterized in that a throttle valve is provided in the chamber downstream of the mixing section, and downstream of the throttle valve a second conveying section with screws and a second mixing section are provided.

Counter-rotating twin screw extruder

Twist kneading disks are arranged such that the width of a piece of disk is 0.1 to 0.5 times the cylinder inner diameter D, a helix angle &#x3b8; as an angle between a vertex of the front surface side of the disk and vertex of the rear surface side of the disk at the tip portion is in a range of 0&#xb0;&#x3c;&#x3b8;&#x3c;90&#xb0; in the reverse rotating direction of the screws as viewed from a cross section of the disk in the end direction of the screw shaft, and a phase angle E as an angle in correlation between the disks around the screw shaft is in a range of 0&#xb0;&#x3c;E&#x3c;90&#xb0;. The twist kneading disks are incorporated in the plasticization kneading portion at the length of more than 1.88 times the cylinder inner diameter D.

Kneading extruder

A process and an apparatus for recycling resin scrap including a thermosetting resin paint film and a thermoplastic resin substrate as its major components, wherein the resin scrap is supplied into a passage of a cylinder, melted, and delivered by screw arrays from an upstream side to a downstream side of the passage of the cylinder, and hydrolyzed by a hydrolyzing agent while forming a highly packed region with a resistor. The resistor restricts the resin scrap to flow from the upstream side to the downstream side in a short period of time, and forms the highly packed region where a contact efficiency is enhanced between the resin scrap and the hydrolyzing agent.

Apparatus for recycling resin scrap

A process and an apparatus for recycling resin scrap including a thermosetting resin paint film and a thermoplastic resin substrate as its major components, wherein the resin scrap is supplied into a passage of a cylinder, melted, and delivered by delivering means from an upstream side to a downstream side of the passage of the cylinder, and hydrolyzed by a hydrolyzing agent while forming a highly packed region with a resistor. The resistor restricts the resin scrap to flow from the upstream side to the downstream side in a short period of time, and forms the highly packed region where a contact efficiency is enhanced between the resin scrap and the hydrolyzing agent.

Process for recycling resin scrap and apparatus therefor

A method of reclaiming a plastic product having a paint film, including the steps of: obtaining crushed particles by crushing a plastic product having a paint film into particles of a predetermined size; supplying the crushed particles to a screw-type extruder; kneading and fusing the crushed particles while supplying water thereto; and obtaining a plastic by discharging a gas produced by decomposing the paint film and vaporized water.

Method of reclaiming plastic product with paint film

A method of producing fiber reinforced plastic moldings. The method includes the steps of: supplying a thermosetting resin component and a thermoplastic resin component into a twin screw extruder; kneading the thermosetting resin component and the thermoplastic resin component into each other in the extruder to produce a fused material in which fine particles of the thermoplastic resin component are micro-dispersed in a matrix of the thermosetting resin component; suppling a liquid monomer into the extruder so that the liquid monomer is mixed with the fused material so as to adjust the viscosity of the fused material to be low; suppling a reaction initiator into the extruder so that the reactive initiator is mixed with the fused material at a temperature not higher than a reaction initiation temperature so as to produce a reactive kneaded material; continuously discharging the reactive kneaded material from a die of the extruder so as to apply the reactive kneaded material onto a long fiber mat; simultaneously pressing and cooling the mat coated with the reactive kneaded material to shape the mat into a sheet; cutting the sheet into pieces having a predetermined length; shaping and curing the thus cut pieces into moldings of a desired form by means of a press molding machine.

Method of producing fiber reinforced plastic moldings

A method of forming a composite material involves feeding materials to a kneader, kneading the materials, and injecting them from the kneader into a mold. The kneader is formed by a screw-type extruder having an ejection outlet at one end for extrusion into the mold. Various input ports are located axially along the extruder. Materials are fed into the kneader beginning at the inlet port most remote from the outlet end and proceeding successively to the inlet port nearest the outlet end. The materials are fed in successive order from those with the highest viscosity and lowest reactivity relative to the materials with the highest reactivity and lowest viscosity. For example, thermoplastic is fed to the inlet most remote from the outlet, and thermosetting resin is fed to the inlet nearest the outlet. In another aspect of the invention, in which thermoplastic and thermosetting resins are employed in roughly comparable amounts, an 'island-in-sea' structure is desired. This structure is achieved by agglomerating thermoplastic material having a particle diameter of 0.05-0.5 .mu.m into particles of 10-1000 .mu.m diameter prior to kneading, then introducing the thermoplastic material into the kneader. The thermoset material is then added from least reactive and most viscous to most reactive and least viscous.

Method of producing molded resin article

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Hiroshima, Japan

Shigeki Inoue