What is electrostatic powder paint?

Electrostatic powder paint is a kind of coating (paint), in which there is no liquid, applied to the metals and other conductive surfaces, not containing solvents, environment friendly, and functional.

History of the electrostatic powder paint

Emergence of the powder paint is usually correlated with the emergence of the environmental and ecological sensitivity in 1960-70s. A law enacted in Los Angeles in 1966 is the first law considering the ecological aspect of the paints and restricting them.

The first epoxy paints launched in the European market in 1964 and started spreading quickly.

In the same period, electrostatic powder paint application system was developed and appeared in the market in France.

Powder paint was accepted across the world in 1970s and entered into growing process and ensured the fast technological development until today.

Application of the electrostatic powder paint

The preliminary condition in the successful electrostatic powder paint systems is that the surfaces are clean and cleared of the dirt. The surfaces being dirty causes that some aesthetical defects form in the coating and weaknesses in the adherence between the coating and surface. The dirt seen on the surfaces most are lubricants, rust on the surface, metal powder from the press, and in general all particles adhered or not adhered to the surface. A clean surface is not single handedly adequate for preventing corrosion. It is necessary to prefer some chemical pre-treatments depending on the type of the part to be painted for protecting against corrosion

• Degreasing
• Chromatizing
• Iron phosphatizing
• Zinc phosphatizing

After applying the necessary chemical pre-treatments, the part is put into the painting cabin. The paint which became static adhered to the material because the thin electrostatic power particles are charged with (-) charge when passing through the special gun produced for the powder paint and the material to be painted is grounded.

After it is ensured that they push each other because all of the particles are charged with the same charge and they spread homogeneously to the entire surface, the material is taken to the oven of 200 °C – 240 °C for curing. Depending on the curing characteristic of the paint, it is kept in the oven for a certain minute. In the waiting stage the electrostatic powder paint melts (cured) and covers the surface of the material with the requested color in a smooth and durable manner. The material coated is taken to the cooling line from the oven and made ready for usage.

The reasons for preferring the electrostatic powder paint

• The electrostatic powder paint is sensitive against environment with the ecological aspect,
• The electrostatic powder paint has wide color options,
• Smooth and shiny surface quality,
• Resistance against corrosion,
• The electrostatic powder paint resistant against chemical effects,
• It is preferred by a lot of different sectors today because it indicates a perfect resistance against impacts.

Photo gallery of powder paint