The submerged metal parts, during the electrophoresis, are positively, charged, the paint particles are negatively charged.
This is done by applying synthetic resin varnish, either as a layer or by electrostatic spray.
Triple layer painting
The entire coating is applied to the car-body through phosphating and undercoating by dipping, filling through electrostatic spraying and top-coating.
The metal parts to be painted are clamped to a DC current source. The other pole charges the varnish particles which are floating in an electrolyte solution and are attracted to the metal attached to the opposite pole. The metal is thereby, evenly and completely coated.
Like in the electrophoresis, the electric charges here, play an important role. They make an thin, even paint coating possible.
It is, as a rule, sprayed on directly before the top-coat and allows an even surface without pores or grooves.
The submerged metal parts become negative during the electrophoresis, the paint particles are positively charged.
Synthetic resin varnish
Mostly it it named after the binding agent. One example would be, acrylic varnish with the binding agent acrylic resin, which hardens through the evaporation of the solvent. It is important that these varnishes can be disolved, if needs be, through the application of suitable solubles.
This is a filler which has the approximate colour shade of the top-coat.
Water soluble paint
This is a synthetic resin varnish, which hardens through the evaporation of the water used as a solvent.