| 摘要 |
A powder applicator nozzle is set at an acute angle to the direction of travel of the workpiece. The applicator has corona charging pins to impart an electric charge to the powder coming from the nozzle. Powder is jetted from a powder nozzle past the corona charging pins. Air under pressure is used for cleaning the charging pins to avoid powder particles clinging to the pointed tip and destroying its electrical characteristics.
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