| 摘要 |
PROBLEM TO BE SOLVED: To obtain a powdery coating material hardly causing a change in coating efficiency for a material to be coated based on the spray amount of the powdery coating material due to its ability to provide a sufficient quantity of frictional charging when applied to a triboelectric charging type spray gun and keep the accumulation of electric charges in the inner wall of the spray gun within a range so as not to cause practical problems. SOLUTION: This powdery coating material comprises at least a binder resin and a curing agent and is used in a triboelectric charging type spray gun using a fluorine-based resin in a coating material conveying part. The following relationships are established between the charged quantity Q (μC/g) according to a magnet blowoff method and the number-average particle diameter (μm) measured by a Coulter counter method: 2P-30<=Q<=2P and +10<=Q<=+30.
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