How Does an Electrostatic Spray Paint Gun Work?

Electrostatic spray guns are widely used to apply an assortment of paint products.

Electrostatic spray guns utilise a series of different technological paint styles including High Volume Low Pressure (HVLP) application and airless coatings. The guns provide an electrostatic feed to atomized paint particles to promote adhesion and a wider area of material coverage.

Function

Originally implemented in 1938, electrostatic spray guns allow liquid paint to become electrically charged during application when a grounded object is being worked on. This allows paint to be attracted to the object and atomized material can change direction during the painting process so that the entire surface is covered. Electrostatic painting also minimises waste.

Considerations

Electrostatic spray guns allow a greater number of surfaces to be painted because adhesion is guaranteed. Porous metals accept paint more readily and items with a large number of curves or hidden surfaces will still receive an even layer of coverage. The spraying process reduces the time it takes for a surface to be painted in comparison to traditional brushing methods.

Applications

The amount of options for electrostatic spray guns is almost limitless. As long as an object has been electrically grounded, the charged particles will seek out the surface and stick to it. Playground equipment, metal office furniture and railings are all painted using electrostatic spray guns

References

• Clean Air Technology Database: Electrostatic Spray Guns
• Spraying Industry: Electrostatic Spray Guns