Without drying, the following problems may occur: • Paint film is prone to flow • Dust easily adheres to the surface • Insufficient paint adhesion • Low paint film hardness These problems will seriously affect product quality. Therefore, drying equipment is essential in a spray painting production line to ensure the paint completes the drying or curing process.

Within a spray painting production line, the pre-treatment system is typically positioned upstream of the spraying equipment; its primary objective is to optimize the condition of the workpiece surface, thereby establishing a robust foundation for the subsequent paint application to adhere to.

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.

From a technical standpoint, automated spray painting systems are entirely suitable for coating plastic products. In fact, across numerous industries, automated systems have already been widely adopted for the spray painting of plastic goods.

The CNC Automatic Painting Machine supports multi-layer spraying. The CNC system can preset the spraying parameters for each layer, such as spraying angle, spray volume, and spraying time. After the first layer is sprayed, the system automatically waits for the coating to dry or cure and prepares for the next layer.

MDF door panels and decorative parts often feature irregular designs such as grooves, reliefs, and openings. CNC automatic spraying machines can adapt their path based on CAD drawings, workpiece scans, or trajectory settings, ensuring complete spraying and preventing paint buildup.