Method for producing fiber reinforced plastic product, and core

Abstract

A main object of the present invention is to provide beneficial improvements relating to a method for producing a fiber reinforced plastic product, the method including curing while pressurizing a prepreg preform by using a core having a fusible part as means for pressurizing. A method for producing a fiber reinforced plastic product, the method including: a core preparation step of preparing a core comprising a fusible part and an outer skin covering the fusible part; a molding step of disposing a prepreg preform inside a mold together with the core, and heating and pressurizing the prepreg preform in the mold to obtain a cured product; and a core removal step of removing materials of the fusible part from the cured product, in the molding step, at least a portion of the prepreg preform being pressurized by expansion of the core, in which the fusible part comprises a first fusible part and a second fusible part having a fusion temperature higher than that of the first fusible part, a material of the first fusible part and a material of the second fusible part are incompatible with each other, and in the molding step, the first fusible part fuses partially or entirely, while the second fusible part does not fuse partially or entirely.

Dependencies are inferred from the claim text.