Toray Industries, Inc.

Jumpei Takahashi

Shigeru Kawashima

Daisuke Nagamatsu

Tadashi Watanabe

A method of producing a resin-impregnated fiber bundle roll body includes unwinding a fiber bundle from a bobbin; winding the fiber bundle on a winding core rotating around a fixed axis through a movable winding head to prepare a product; and leading the fiber bundle taken off in the unwinding to the winding between the unwinding and winding, wherein the leading or winding includes a resin impregnating the fiber bundle, and the winding includes a fiber content calculation of a fiber content in a layer of the fiber bundle on the winding core of an intermediate product to control one according to the fiber content: a resin adhesion amount in the resin adhesion operation; a winding tension of the fiber bundle applied to the intermediate product; a removal amount of a surplus resin layer on an outer surface of the intermediate product; and a resin viscosity in the intermediate product.

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Nagoya, Japan

Jumpei Takahashi