| 摘要 |
PURPOSE:To improve productivity by shortening a molding cycle without deteriorating 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 carbonate into a glass fiber as a curing catalyst. A top force 10 and bottom force 20 are heated respectively at 150 deg.C and 130 deg.C by circulating separate heating oil respectively within the top force and bottom force by making use of heating and controlling devices 30, 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, a part of the heating oil circulating within the top force is circulated, the bottom force 20 is heated at 150 deg.C similar to the top force 10 and SMC 50 is cured. A mold clamping time is 200 seconds and a good quality bathtublike molded product is obtained in a comparatively short time. |
