HIGH PRESSURE GAS INSERTING METHOD TO JETTING NOZZLE OF COATING MATERIAL SPRAYER

摘要

PROBLEM TO BE SOLVED: To obtain a method of charging a high pressure gas stably to a nozzle of a coating gun formed so as to attain high coating ratio to perform the coating excellent in coating efficiency without generating coating ununiformity. ;SOLUTION: This coating material jetting machine has a pressure vessel 3, into which a coating material diluted with a solution is charged in a pressurized state, and the jetting nozzle 2, which is provided at the end of the pressure vessel 3, is shaped to be smoothly decreased in the cross-section from a nozzle inlet part toward a throat part 1 also formed smoothly and is formed to linearly extend from the throat part 1 up to a nozzle outlet part. In such a case, a high pressure gas storage vessel 7 capable of temporarily storing the high pressure gas in the outer periphery of the pressure vessel 3 is arranged to realize stable coating, a part of the storaged high pressure gas flows into the pressure vessel 2 through a high pressure gas charging port 4 and the coating material charged in the pressurized state is jetted from the jetting nozzle 2 by the high pressure gas flowing into the pressure vessel 3. In such a case, the cross-section of the high pressure gas flow-in port 8 is controlled to be larger than that of the high pressure gas charging port 4.;COPYRIGHT: (C)2001,JPO