Processes

Electrostatic spraying

Electrostatic spraying is the most commonly used powder application method. In electrostatic spraying, an electrical charge is applied to the dry powder particles while the component to be painted is electrically grounded. The charged powder and grounded workpiece create an electrostatic field that pulls the paint particles to the workpiece. The coating deposited on the workpiece retains its charge, which holds the powder to the workpiece. The coated workpiece is placed in a curing oven, where the paint particles are melted onto the surface and the charge is dissipated.

• Freely available sources of spray equipment,
• Thinner coatings,
• Lower material usage,
• Reduced inventory requirement,
• Lower coating efficiency (depending on the article and reclaim facilities).