PURPOSE: To obtain an inexpensive laminated board which is prevented from the production of burr, by a method wherein thermosetting resin is impregnated in a base material and dryed to obtain a prepreg, the prepreg is preliminarily cured by heating and pressurizing the periphery thereof, and a plural number of the prepregs is laminated and molded by heating and pressurizing.

CONSTITUTION: Thermosetting resin varnish, i.e., phenol resin, is impregnated and dried over a whole surface of a base material, i.e., paper, to obtain a prepreg, and the periphery of the obtained prepreg 1 is preliminarily cured by heating and pressurizing it preferably at 100W150°C, under 5W15kg/cm2 and for 2W5sec by means of upper and lower molds 2 and 3 in which a heater constituted in a squre is installed. A plural number of the prepregs, superposed with each other, is molded by heating and pressurizing to obtain a desired laminated board.