| 摘要 |
PURPOSE:To prevent the lot-to-lot variation of a resin material and deterioration of quality due to the disturbance factors, by controlling the working conditions according to the relation between the pressure of a thermosetting resin during pressure molding, which is always detected, and the degree of resin cure while maintaining a high molding efficiency. CONSTITUTION:The resin 1 is pushed by the plunger 1 and molten at a mold temperature, then made to flow from the runner 6 and gate 7 to the cavity 8 maintained at a given mold temperature by the molds 4 and 5. The change in pressure of the resin 2 with time is recorded by the outomatic recorder 11 via the pressure sensor 9 and the transducer 10. optimum molding conditions are determined by the preestablished relation between the detected pressure value, the degree of the resin cure, and the quality of the molded article. |
