| 摘要 |
PURPOSE:To enable the title method to control a filling quantity, by a method wherein at the time of filing of prefoaming resin particles, suction is performed through a steam chamber side and a degree of reduced pressure on a suction side varying through the filling quantity is detected. CONSTITUTION:Air in steam chambers 5a, 5b and a cavity 4 is discharged forcibly outside of a system by a pressure reduction device 9 mounted downstream the steam chambers 5a, 5b by actuating a filling gun and the prefoaming resin particles 6 are introduced quickly into a cavity 4. A degree of reduced pressure of the insides of the steam chambers 5a, 5b, in this instance, is detected by a pressure detector 10 provided on a pipe of a line of the pressure reduction device and a degree of clogging of the inside of the cavity 4, that is, a degree of filling of the prefoaming resin particles into the cavity 4 is decided. Therefore, when fixed degree of the reduced pressure (-0.01-0.80kg/cm<2>G) has attained, if an action of the filling gun 8 is suspended, a filling quantity of the prefoaming resin particles 6 in the cavity 4 can be made constant. |
