To produce a tow prepreg and a sheet-like prepreg in high productivity by accurately control the resin content and efficiently performing uniform impregnation.
A resin is quantitatively fed to at least one face of a tow in which the density of filaments which are flat and constituted in the widthwise direction is made rough and dense in the widthwise direction and the resin is brought into contact with the tow and, simultaneously or just after the contact, soaked in the thickness direction of the tow. At the same time, the filaments constituting the tow are moved in the traverse direction of the resin to uniformly impregnate the resin into the tow. Then, the tow is cooled and wound up to give the objective tow prepreg. The filaments are made flat and constituted in the traverse direction and the filament density is made rough and dense. Plural tows are used and brought into contact with the resin, soaked and uniformly impregnated, cooled down, then wound up in a sheet-like manner without separation of the each tow to give the objective sheet-like prepreg.
FURUKAWA SATOYUKI
NAKAHARA SADAHITO
ITO TOSHIYUKI
