Mitsubishi Chemical Corporation

Hajime Okutsu

Hiroshi Iwata

Ryuichi Ishikawa

Nobuyuki Yamamoto

Takayuki Kobayashi

Koichi Akiyama

Yasushi Watanabe

Tadao Samejima

Tetsuya Noda

Yukihiro Mizutori

Fuminori Nakaya

Masatoshi Kamata

The purpose of the present invention is to provide a fiber-reinforced resin material having minimal directionality of strength as well as excellent productivity, a method and device for manufacturing a fiber-reinforced resin material whereby a molded article is obtained, and a device for inspecting a fiber bundle group. A method for manufacturing a sheet-shaped fiber-reinforced resin material in which a paste (P) is impregnated between cut fiber bundles (CF), the method for manufacturing a fiber-reinforced resin material including a coating step applying a coating of a paste (P) on a first sheet (S) conveyed in a predetermined direction, a cutting step for cutting a long fiber bundle (CF) using a cutter (A), a scattering step for dispersing the cut fiber bundles (CF) and scattering the cut fiber bundles (CF) on the paste (P), and an impregnation step for pressing a fiber bundle group (F) and the paste (P) on the first sheet (S) and impregnating the paste (P) between the fiber bundles (CF).

Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device

One mode of the invention relates to a producing a device for chopped fiber bundles having a chopper unit including a cutting blade for cutting long fiber bundles, a guide for restricting the travel direction of the fiber bundles to be supplied to the cutting means, and a structure, provided between the chopper unit and the guide, that widens the fiber bundles. The invention also relates to method for producing chopped fiber bundles by widening fiber bundles while restricting the travel direction of the long fiber bundles to be supplied to chopper unit by a guide, and obtaining chopped fiber bundles by cutting the fiber bundles with the chopper unit.

Producing device and producing method for chopped fiber bundles, producing device and producing method for fiber-reinforced resin forming materials, cutting blade for carbon fiber bundles, and rotary cutter for carbon fiber bundles

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Tokyo, Japan

Hajime Okutsu