POWDER APPLICATION APPARATUS, AND POWDER APPLICATION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a powder application apparatus and a powder application method of forming a coating film of high thickness uniformity on an object to be coated. PSOLUTION: The powder application apparatus 100 includes a shutter 4 for opening/closing the space between an object 10 to be coated and a screen electrode 1. Powder 21 is first supplied onto the screen electrode 1 from a hopper 2 with the shutter 4 kept in a closed state. A brush 8 is caused to scrape the surface of a powder layer with the shutter 4 kept in the closed state. Thus the powder 21 is uniformly laid over the screen electrode 1 without migrating to the object 10 to be coated. Subsequently a high voltage is applied between the screen electrode 1 and a transfer electrode 3 to form an electrostatic field, and the shutter 4 is put into an opened state. Thereafter, the brush 8 is caused to scrape the powder layer again to apply the powder 21 disposed on the screen electrode 1 onto the object 10 to be coated. PCOPYRIGHT: (C)2010,JPO&INPIT