| 摘要 |
PURPOSE:To manufacture a molded product excellent in external appearance and quality by providing a pressurizing speed alteration point between a flow starting point and a curing starting point when SMC and a glass mat overlapped in a mold and heat pressurizing molding is carried out and completing inner-mold filling prior to the start of curing. CONSTITUTION:A top force B is brought into contact with SMC 1 and then a resin composition of SMC 1 enters into the flowing process (t) for starting flowing and also into the curing process t2 for starting curing of the resin composition from the point of original clamping pressure 50kg/cm<2>, and the pressurizing speed alteration point t1 is provided at a point in the middle from the flow starting point (t) where a top force B is brought into contact with SMC 1 to the curing starting point t2. In the middle of the flow starting point (t) and the curing starting point t2, the pressurizing speed is set low so that a glass mat 2 is impregnated with the resin composition in SMC 1 and pressurized slowly, and no glass cutting is generated in the glass mat 2. Also, defective external appearance such as surface defect generated by the glass cutting and pregel does not occur on the surface of a molded product 3 thus manufactured by setting the pressurizing speed point from the pressurizing speed alternation point t1 and increasing the speed up to the clamping set pressure before curing. |
