| 摘要 |
PURPOSE:To eliminate air bubbles and thin spots, to improve capacity and appearance and to perform molding within a short time by superposing a plurality of prepregs on a male mold and fitting a female mold in the male mold to preheat both molds and, thereafter, applying vibration to said molds under heating and pressure or under heating, pressure and reduced pressure to form a molded product. CONSTITUTION:SMC prepregs 6 each formed by impregnating a glass fiber chop base material with a polyester resin and bringing the impregnated one to a semicured state are heated, pressed and depressurized using a press machine 1 equipped with male and female molds 7 having a depressurizing apparatus 3 and a vibration apparatus 4 and vibration is applied to the molds to perform molding. As a result, a molding time is shortened to a large extent and a pinhole and thin spots such as gloss difference and surface sink caused by the non-uniform flow of a resin at the time of molding are reduced and a molded product having good capacity and appearance is obtained. |
