Production method for fiber-reinforced resin molded article

Abstract

A method is provided in which a fiber-reinforced resin molded article having high dimensional accuracy is obtained by press molding a fiber-reinforced resin. The present invention relates to a method for producing a fiber-reinforced resin molded article by pressing a single prepreg of a fiber-reinforced resin, a plurality of stacked prepregs, or a plurality of stacked prepregs with adhesive resin sheets interposed between the prepregs, said method comprising: a step in which the prepreg is positioned between a heated upper die and a heated lower die; a step in which the upper die is lowered and a load is applied to the prepreg by the upper die and the lower die while further increasing the temperature of the upper die and the lower die; a step in which the upper die and the lower die are maintained at a temperature within a prescribed temperature range while the upper die is positioned at the bottom dead center; a step in which the heating of the upper die and the lower die is reduced or stopped; and a step in which after reducing or stopping the heating, the upper die is raised and the fiber-reinforced resin molded article is extracted.