| 摘要 |
PROBLEM TO BE SOLVED: To continuously change the coating color without interrupting coating. SOLUTION: A plurality of powder coating materials 1A-1D with different colors are properly mixed by a mixing means 10 while the total amount being kept constant and the mixing ratio being changed and continuously sent to a pressure sending means 30 and then to a coating gun 38 from the pressure sending means 30 to be applied to an object face to be coated. If the mixing ratio of the powder coating materials 1A-1D is changed using the spraying of the powder coating materials 1A-1D from the coating gun 38, the color of the already mixed powder coating materials 1A-1D to be sprayed out the coating gun 38 is changed. Since powder coating materials 1A-1D with low fluidity as compared with that of liquid coating materials are used, the probability of the fluctuation of the mixing ratio during the pressure transportation from the pressure sending means 30 to the coating gun 38 is low to result in reliable coloration with a desired color tone.
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