To prevent resin compositions from flowing out of an end of width direction of a pressed object during manufacturing by pressing and bonding a laminate, which is laminated so that metallic foils are arranged on both surfaces, using laminate rolls, and thereafter removing the resin composition at the end of width direction of the pressed object and the pressed object is heated and cured.

Two resin-impregnated bases 3 are formed by impregnating bases 1, which are continuously fed, with resin compositions 2 containing thermoset resin of radical polymerization. The resin-impregnated bases 3 and two metallic foils 4 are laminated so that the metallic foils 4 are arranged on both surfaces thereof. Next, a laminate is pressed and bonded by laminating rolls 5, and thereafter the resin composition of an end of width direction of the pressed object is removed by a resin removing device 6, and the pressed object is heated and cured in a heating and curing furnace 7. And then, the pressed object is cut by cutters 8 for continuously manufacturing laminated sheets. The number of the resin-impregnated bases 3 to be laminated is not limited, the number thereof can be appropriately controlled corresponding to thickness of laminated sheets to be obtained.