| 摘要 |
PURPOSE:To improve productivity by shortening a molding cycle without deterio rating a quality, in a thermocompression molding method of a thermosetting fiber-reinforced resin sheet. CONSTITUTION:A sheet molding compound (SMC) 50 having a thickness of about 2mm is manufactured by infiltrating thermosetting unsaturated polyester resin paste containing t-butyl peroxy isopropyl cabonate into a glass fiber as a curing catalyst. A top force 10 and bottom force 20 are heated at 130 deg.C by circulating heating oil within the top force and bottom force by making use of a heating and control device 40 of the heating oil. Thirty sheets of the SMCs 50 are charged to the bottom force 20 by piling them upon one another, onto which the top force 10 is lowered and mold clamping is performed. Immediately after that, high-temperature heating oil is cerculated within the top force and bottom force by changing over to a heating and control device 30 of the heating oil, the top force 10 and bottom force 20 are heated at 150 deg.C and the SMC 50 is cured. A mold clamping time is 205 seconds and a good quality bathtublike molded product is obtained in a comparatively short time. |
