| 摘要 |
PROBLEM TO BE SOLVED: To wash a mixing nozzle by a simple structure without using a solvent. SOLUTION: In this synthetic resin molding machine, first and second liquids cured by mixing are supplied to the mixing nozzle 2 and mixed by the mixing nozzle 3 to be discharged. The molding machine is equipped with a first supply valve 5 for supplying the first liquid to the mixing nozzle 2, a second supply valve 6 for supplying the second liquid to the mixing nozzle 2 and a control circuit 10 for controlling the first and second supply valves 5 and 6. In a process for washing the mixing nozzle 2, the control circuit 10 controls the second supply valve 6 so as to supply the second liquid to the mixing nozzle 2 while controls the first supply valve 5 so as to stop the supply of the first liquid to the mixing nozzle 2 and supplies only the second liquid to the mixing nozzle 2 to wash the mixing nozzle 2 with the second liquid.
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