Apparatus and method for producing prepreg

PROBLEM TO BE SOLVED: To produce a prepreg having superior quality performance by depositing matrix resin powder uniformly and efficiently on a sheet-like fibrous base material.SOLUTION: A method for producing a prepreg includes the steps of: mixing air into matrix resin powder 30 supplied quantitatively and successively and pushing it by high pressure from the rear side of a supply pipe 32, and electrically charging the matrix resin powder 30 together with air in the supply pipe 32; then floating the matrix resin powder 30 by inputting it into a chamber 37 in which a rising wind is sent from a tip port 32a of the supply pipe 32 through a plurality of holes provided in a bottom surface 37c; discharging the matrix resin powder 30 from a plurality of discharging holes provided in a front surface 37a of the chamber 37; and depositing the matrix resin powder to a sheet-like fibrous base material 50 formed by application of an electric field between the sheet-like fibrous base material 50 connected to the ground by applying a high voltage to a conductive net-like object 39 provided between the front surface 37a of the chamber 37 and a sheet-like fibrous base material 50.