The core principle of a spray painting production line is to use compressed air or electrostatic action to atomize liquid paint into tiny particles and evenly spray them onto the workpiece surface. After the paint forms a wet film on the workpiece surface, it is transformed into a stable paint film through drying or curing equipment.

Paint viscosity has a significant impact on spraying quality. In a spray painting production line, if the paint viscosity is too high, the paint will not flow and spread naturally after spraying, easily forming an orange peel surface.

In some industrial coating workshops, a single dust removal process is often insufficient to completely eliminate airborne dust. Therefore, many companies perform multiple dust removal processes at different stages of their painting production lines.