Electrostatic coating (painting)

Electrostatic coating, also known as electrostatic painting, is a process in which paint particles are applied to a workpiece surface using an electric field. This process is based on the principle of electrostatic attraction: the paint particles are electrically charged in a spray gun while the workpiece is earthed. As a result, the paint particles are attracted to the surface of the workpiece and adhere to it evenly.

A major advantage of electrostatic coating is the high efficiency of paint utilization. Thanks to the electrostatic forces, the particles are directed specifically onto the workpiece, minimizing overspray and reducing material loss. In addition, the coating thickness is uniform, resulting in a high-quality surface finish.

The process is suitable for a wide range of substrates, including metal, plastic and wood. In industrial applications, it is often used in the automotive, furniture and electrical industries. The technique can be used with various types of paint, including powder coatings and liquid coatings.

Electrostatic coating is also more environmentally friendly than conventional painting methods, as fewer solvents are required and the recovery of excess paint is easier. The automation of the process also means that large quantities can be processed efficiently.