| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray gun capable of quickly discharging a liquid waterproof agent retained between a mixing part of the spry gun and a nozzle from the nozzle. SOLUTION: In the spray gun G for spraying on an executing surface by jetting the liquid waterproof agent prepared by mixing a principal agent A containing an isocyanate component and a curing agent B containing a polyol in a mixing part 100 from the nozzle 200, a cleaning gas supply mechanism C for supplying cleaning gas is provided in the mixing part 100 and the liquid water proof agent present between the mixing part 100 and the nozzle 200 is discharged from the nozzle 200 by the cleaning gas supplied from the cleaning gas supply mechanism C to the mixing part 100.
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