How charged powder is deposited?

Some people think that tribostatic systems cannot affect an electric field between the spray gun and painted product while charging the powder.

It is easier for you to paint arduous areas by tribostatic spray. But still, this is not entirely correct because if there is a charge then there will be an electric field. In general, there are 2 sources occuring  electric fields located in the corona discharge system: the cumulative charge of free ion powder clouds and the charging electrode of the atomizer.

When the electric field is in the space where the powder is deposited it becomes the outcome of the interaction of these 2 fields.

In the tribostatic charge scheme the electric field near the surface of the product also exists and in the powder charge ratio it can be quite large.

Because of  “external field” absence, as in the case of corona charge the process of coating products with complex shapes is enabled.

The main feature of a tribostatic charge system is that there are no free air ions in the spraying system, this reduces the charge field activity and greatly slows down the reverse ionization on the painted product. This way coating quality is much better than traditional corona discharge systems.

Also tribostatic systems are excellent for multi-ball surface coating.

And when you use corona charging systems, free ions make it difficult to charge the dielectric surface quickly and apply a smooth and even paint coat.

Plus, these two methods differ in the spraying process aerodynamics: tribostatic systems give the opportunity to make even more nozzles which allows spraying with perfect uniformity.