| 摘要 |
<p>The invention concerns a method for coating an object with a film obtained by melting a thin powder layer which consists in: (a) providing an electrically charged powder, said powder having been charged by any particular means; (b) bringing the object close to the powder or contacting the object with the powder, the object being connected to a zero potential or sufficient to coat it with powder; (c) then placing the powder-coated object in an oven at an adequate temperature until the coating film is obtained by melting the powder, the oven comprising electrodes brought to a high electrical potential so as to produce a corona effect which compensates relaxation of the charge of the particles during heating. Thus, the charge of the particles is maintained and hence they remain on the object and can thereby form the film by melting. The invention also concerns the equipment for implementing the method.</p> |
