UV Roller Coating Machines typically require paint viscosity within a certain range (e.g., 25–60 seconds/Ford-4 cup). If the viscosity is too low, the coating cannot form a stable film on the roller surface, and it tends to spread too quickly on the board, causing it to sag due to gravity.
If using a 100% solids UV-curable paint, no solvent evaporation is required. After spraying, allow it to stand for approximately 3–5 minutes before placing it in the UV Dryer Machine.
This time is primarily for film leveling and bubble elimination.
The most common and highly compatible UV paints for roller coating machines include: UV primers, sealers, intermediate coats, high-gloss topcoats, matte topcoats, and clear acrylic systems.
Therefore, to allow CNC automatic spraying machines to achieve their intended high-precision advantages, it is essential to maintain a clean, temperature-controlled, and dust-free environment in the spraying area. This is the fundamental necessity of configuring a dust collector.
Water-based coatings are environmentally friendly coatings that use water as the dispersion medium.
CNC automatic spraying machines have excellent compatibility with water-based coatings, and are widely used, especially in wood, plastics, electronic product casings, and automotive interior parts.
The coating thickness of a curtain coating machine is determined by both the liquid flow rate and the conveying speed. If the flow rate is too high and the speed too slow, the coating thickness increases, and the surface tension is insufficient to support gravity, easily leading to sagging.
Furniture coating requires high precision and consistency. Single-roller or double-roller structures often cannot meet the complex process requirements; therefore, most furniture factories choose multi-roller UV Roller Coating Machines.
The conveyor speed of the UV Dryer Machine directly determines the amount of time the substrate receives light.
If the conveyor is too fast, the curing time will be insufficient; if it is too slow, it may over-cur or yellow.
A UV Roller Coating Machine in a furniture factory typically requires only 2-3 people to operate efficiently.
Among them:
• 1 person responsible for equipment control and process monitoring;
• 1 person responsible for material feeding and receiving;
• Depending on production volume, one additional person can be added for assisting with handling and inspection.
