How to Evenly Spray Protective Coating on the Surface of Circuit Board?

Why do circuit boards need coating protection?

Protective coatings are used to enhance the performance and reliability of printed circuit board assembly, enabling it to be applied in harsh environments such as underwater, aerospace, and military applications. Manufacturers of electronic consumer products are increasingly using protective coatings as an economical way to improve product reliability.

The protective coating is a plastic film wrapped around the printed circuit assembly board, with a thickness of 0 005in, it seals dust and environmental pollutants outside the circuit board.

The function of the protective coating is as follows:

1. Protect the circuit from extreme environments and prevent it from being affected by moisture, bacteria, dust, and rust;
2. Prevent damage to the circuit board during production, assembly, and use, reduce mechanical stress on components, and protect them from thermal oscillation;
3. Reduce wear and tear during use;
4. As the protective coating increases the insulation strength between conductors, it enhances the performance of the circuit board and allows for greater component density.

How to evenly apply protective coating on the surface of circuit board?

FUNSONIC ultrasonic atomization spraying equipment combines new spray and control technology to achieve a more uniform, thinner and controllable film coating. The equipment integrates multiple systems, such as ultrasonic, carrier gas, heating table, vacuum adsorption and exhaust gas emission, which can be applied to a full range of ultrasonic nozzles, small or medium area film preparation, and spray pyrolysis applications. The equipment is widely used in the field of fine coating preparation.