| 摘要 |
<p>The procedure for applying a powder coating to the surface (2) of an article (1) uses a jet (8) of electrically charged particles directed at the article by the nozzle (6) of an electrostatic gun or tribo electric generator positioned at a distance (11) from the article equivalent to at least four times the width (12) of the article's surface. The procedure for applying a powder coating to the surface (2) of an article (1) uses a jet (8) of electrically charged particles directed at the article by the nozzle (6) of an electrostatic gun or tribo electric generator positioned at a distance (11) from the article equivalent to at least four times the width (12) of the article's surface. The surface to be coated is given an electrical potential so that the powder particles are drawn towards it, and a deflector (17) is positioned relative to the surface so that some of the particles create a mist that produces an even coating on a zone (5) of the article that has an irregular surface, e.g. formed by stamping, punching or embossing. The dimensions of the deflector are such that its sides (21, 22) are longer that the respective dimensions (23) of the surface zone situated immediately behind it, and it is positioned at a distance (19) from the article that is greater than twice the width of the zone to be coated behind it.</p> |
