Mitsubishi Chemical Corporation

Mitsubishi Rayon Company, Limited

Nike, Inc.

Other

Oki Electric Industry Co., Ltd.

Ntn Corporation

Karsten Manufacturing Corporation

Asahi Glass Matex Co., Ltd.

Tsuneo Takano

Hitoshi Kodama

Kiharu Numata

Yuuji Kazehaya

Hiroshi Kawaguchi

Akihiro Ito

Masato Taguchi

Kazuya Goto

Satoshi Kaji

Kazuki Koga

Mitsushi Nishimura

Junichi Muramatsu

Tadashi Sakai

Takashi Honma

Akitada Yanase

Tatsuo Nakajima

Michael L Kelly

Masaru Uesugi

Michael F Kelly

Katsuhiko Shimada

Akihiro Maeda

Shizuo Cho

Arito Matsui

Kazuhisa Ikeda

Hajime Asai

Yasuo Hiromoto

Tadayoshi Saitou

Takashi Nishimoto

Michisuke Edamatsu

Akihiro Itou

Hidehiro Takemoto

Takumi Ishimori

Kazuhiko Yoshida

Yukihiro Watanabe

Osamu Itamoto

Go Itohiya

Junnichi Muramatsu

Kouki Wakabayashi

Provided is a method of manufacturing a FRP product that is obtained by integrally curing a prepreg where fibers are arranged in a specific direction, such as a unidirectional prepreg, a cloth prepreg, or a tow prepreg and a chopped fiber prepreg, such as a sheet molding compound, in which disorder of fiber arrangement in a portion obtained by curing the prepreg is suppressed to obtain an expected strength.

Method of manufacturing FRP product

A main object of the present invention is to provide beneficial improvements relating to a method for producing a fiber reinforced plastic product, the method including curing while pressurizing a prepreg preform by using a core having a fusible part as means for pressurizing. A method for producing a fiber reinforced plastic product, the method including: a core preparation step of preparing a core comprising a fusible part and an outer skin covering the fusible part; a molding step of disposing a prepreg preform inside a mold together with the core, and heating and pressurizing the prepreg preform in the mold to obtain a cured product; and a core removal step of removing materials of the fusible part from the cured product, in the molding step, at least a portion of the prepreg preform being pressurized by expansion of the core, in which the fusible part comprises a first fusible part and a second fusible part having a fusion temperature higher than that of the first fusible part, a material of the first fusible part and a material of the second fusible part are incompatible with each other, and in the molding step, the first fusible part fuses partially or entirely, while the second fusible part does not fuse partially or entirely.

Method for producing fiber reinforced plastic product, and core

A method for producing a fiber reinforced plastic can suppress with which wrinkling or bridging in a convex surface or a concave surface having a large curvature at the same time even if the fiber reinforced plastic has a complicated three-dimensional shape. Such methods for producing a fiber reinforced plastic may involve shaping a prepreg sheet in which continuous fibers are impregnated with a resin material into a three-dimensional shape to produce a fiber reinforced plastic (a); wherein at least a portion of the continuous fibers in an area (X) of the prepreg sheet corresponding to an area (X') in which the fiber reinforced plastic (a) is shear-deformed is bent in an in-plane direction in advance.

Method for manufacturing fiber-reinforced plastic

Provided is a method for manufacturing a fiber reinforced plastic molded body, the method including: performing thermocompression molding, by using a molding die, on a molding precursor which is obtained by arranging a prepreg including a thermosetting resin and a fiber around a thermoplastic solid body.

Method for manufacturing fiber reinforced plastic molded body

This fiber-reinforced resin molded article has: a sheet molding compound layer; a continuous fiber reinforcing material layer; and a harrier layer, wherein the barrier layer is interposed between the sheet molding compound layer and the continuous fiber reinforcing material layer.

Fiber-reinforced resin molded article and method for manufacturing fiber-reinforced resin molded article

The present invention applies to a molding method for a fiber-reinforced plastic structure having an internal cavity. Firstly, grain groups, which mainly consist of a plurality of high-rigidity grains, are accommodated in bags, and a plurality of cores are formed. A reinforcing fiber substrate, is placed between the plurality of adjacent cores so as to be interposed therebetween. For example, a plurality of molding base materials are prepared by surrounding each core with a prepreg, and the plurality of molding base materials are combined and placed inside a molding die, and the molding base materials are compression molded. When compression molding, a part of the outer surface of the cores is locally pressurized, and the internal pressure of the cores is increased, changing the shape thereof, thus eliminating voids that are present between the cores and the prepreg and/or the prepreg and the molding surface of the die.

Molding method for fiber-reinforced plastic structure and vehicle wheel

Provided is a method for manufacturing a fiber-reinforced plastic molded body by which, when a molded article having a hollow part is being molded using a molding mold, it is possible to deform the peripheral surface area of a core by increasing the pressure inside the core without using pressurized gas or pressurized fluid. A group of particles and the like including a particle group and a core block is accommodated in a flexible bag to form a core. The particle group is composed of multiple rigid particles. The core is arranged inside a prepreg containing a resin and fibers, and the prepreg including the core is arranged inside a molding mold and is molded by applying pressure.

Method for manufacturing fiber-reinforced plastic molded body

Molding method for fiber-reinforced plastic structure, and vehicle wheel

A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1&#x25a1;(Da/Db)&#x25a1;2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.

Method for molding fiber-reinforced plastic, and molding device for same

A fiber reinforced composite material structure comprises a thin sheet that includes a first surface and a plurality of convex portions which protrude and are regularly arranged on the first surface and each of which includes a top face; and a surface material that includes a second surface and is bonded to the top faces on the second surface.

Fiber reinforced composite material structure, composite material molded body using the same, and manufacturing method therefor

A method for molding fiber-reinforced plastic. A core is formed in a desired shape by accommodating, in a flexible bag, a grain group containing plurality of grains. The core is placed inside a prepreg containing resin and fibers, and the prepreg, in which the core is housed is placed in a molding die and compression molded. When doing so, the grain group contains first and second grains (a,b) that satisfy the equation (1). (1) 1.1&#x2264;(Da/Db)&#x2264;2.0 In the equation Da is the grain diameter of the grains (a), and Db is the grain diameter of the grain (b). When using a molding die to mold a molded article having a cavity, the above mentioned molding method enables an increase in the internal pressure of the core in order to change the peripheral surface area of the core, without using a pressurized gas and/or pressurized liquid.

The present invention relates to a method for molding fiber-reinforced plastic that is characterized: in comprising a process () for accommodating flowable grains comprising multiple particles in a flexible bag to form a core, a process () for interposing the core between fabric configured from fibers and placing the fabric and core inside a molding die, and a process () for injecting a resin into the molding die into which the fabric and core have been placed and curing; and in that, when performing the curing in process (), a portion of one of the outer surfaces of the core is pressed and deformed by a pressing means to increase the internal pressure inside the core. The present invention provides a method for manufacturing fiber-reinforced plastics of excellent external appearance in which there are no defects such as wrinkles in the outer surface during forming using a core.

Method for molding fiber-reinforced plastic

A golf club head enables the initial velocity of a ball to be increased and enables the carry to be lengthened. In some example structures, the golf club includes a face plate formed from metal and club head body (e.g., a crown and sole) formed from fiber reinforced plastic. A weighted body is provided inside the rearmost portion of the golf club head and a low rigidity portion whose width becomes gradually narrower as it approaches the rearmost portion is provided in the crown extending from the vicinity of the face plate to the rearmost portion.

Golf clubs and golf club heads

A method is presented for stably, highly, and efficiently producing a three-dimensional molded article of a fiber-reinforced composite material having a three-dimensional shape, uniform quality, and free from wrinkles by press molding a plurality of prepregs cut out in a predetermined shape and also to a molded article.

Method of producing molded article of fiber-reinforced composite material and the molded article

The invention relates to a prepreg containing a reinforcing fiber, a sheet-like reinforcing fiber substrate including the reinforcing fiber, and a matrix resin, wherein the matrix resin is impregnated into the sheet-like reinforcing fiber substrate and also covers one surface of the sheet-like reinforcing fiber substrate, such that the matrix resin impregnation ratio is within a range of 35% to 95%. The invention also relates to a prepreg containing a reinforcing fiber substrate in the form of a sheet and formed from a reinforcing fiber woven fabric, and a matrix resin, wherein at least one surface of the reinforcing fiber substrate displays a sea-and-island-type pattern with resin-impregnated portions (island portions) and fiber portions (sea portions), such that a surface coverage of the matrix resin is within a range of 3% to 80%.

Prepreg, intermediate material for forming FRP, and method for production thereof and method for production of fiber-reinforced composite material

Growing community of inventors

Toyohashi, Japan

Tsuneo Takano