| 摘要 |
PROBLEM TO BE SOLVED: To provide a spray nozzle and a spray system capable of stabilizing process and product quality as well as preventing control delay and liquid dripping. SOLUTION: The spray nozzle is equipped with a piston 17 that closes a liquid feed path 27 and a gas feed path 29 both at its advanced position and opens both feed paths at its retracted position and a pressurizing means 30 that drives the piston 17 to the advanced position each disposed in a body 2. The gas feed path 29 is configured so that the piston 17 is forced to retract by feeding a gas, and thereby both feed paths are simultaneously opened by feeding a gas into the gas feed path 29 to allow a liquid and a gas to be separately fed into the spray nozzle. COPYRIGHT: (C)2007,JPO&INPIT
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