When using electrostatic spraying, the paint particles are given an electrostatic charge which causes them to be attracted to a conductive surface. When the paint particles come into contact with the surface they are being sprayed on, the electrostatic charge is neutralized and the paint particles adhere to the surface. This process allows for more precise and efficient application of the paint, as the paint particles are attracted to the surface they are supposed to be applied to, rather than just bouncing off or being blown away by the air spray.
This method can be used on a wide range of surfaces, including metal, plastic, wood, and even some non-conductive surfaces such as glass. For non-conductive surfaces, a conductive primer can be applied first, which creates a conductive layer on the surface and allows the electrostatic charge to be conducted through the surface and attract the paint particles to it. Another way is to put the non-conductive piece between the applicator and a conductive grounded surface, this will make the electrostatic charge can be conducted through the surface and attract the paint particles to it.
It’s important to note that not all electrostatic spraying equipment is suitable for all surfaces and it’s important to consult with the equipment provider for the best process for a specific surface. Also, some electrostatic equipment may require specific surface preparation and cleaning, such as degreasing or sandblasting, to ensure proper adhesion of the paint