The principle of the role of electromagnetic brush technology in powder coating

DSM's EMB technology (electromagnetic brush technology) stems from the principles of copying and laser printingPowder particles are strongly mixed with carrier particles, which are coated with Teflon or similar polymersDuring the mixing process, the powder particles are charged with the carrier particles and ground them to the carrierThe mixture is then transferred to a rotating drum with a fixed magnet on the inside using a mixing roller, with the grounding state on the other side of the sheetIn the magnet range, carrying powder particles carrier beads, under the magnetic field to form a chain, these are called adhered to the surface of the drum magnetic brush, and the length of the magnetic brush determines the rotation of the drum and a fixed fixed knife, that is, the distance between the scraperThe powder is glued to the coil by applying an electrostatic field between the rotating drum housing and the photosensorAt this time, the amount of powder particles depends on the strength of the electrostatic field, when the electrostatic field force is greater than the coulomb force between the powder particles and the carrier, the powder particles will be deposited, by adjusting the size of the electrostatic field to adjust the thickness of the coating film