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 PCB coating  PCB coating

PCB coating

Coating ensures vehicle safety

With the development of automobile, it is gradually becoming electronic. Electronization makes cars more intelligent and more comfortable. PCB is a widely used component in automobile. Because the automobile is used outdoors for a long time, the reliability of PCB long-term use is of great significance to the safe driving of automobile. Coating can achieve moisture-proof, salt fog proof, dust and mold proof, which is an effective means to improve the reliability of PCB.

Process characteristics

Typical products of coating application of automobile PCB board include ECU, steering power, navigation module, T-box, key, charging port adapter board, PCM, etc.


Automobile PCB coating process requires high requirements, such as edge resolution, scatter point, thickness and bubble. Therefore, coating of automobile PCB is defined as precision selective spraying application.

Of course, process control is also a point that can not be ignored, such as glue stability monitoring and even automatic adjustment, machine air pressure monitoring, glue temperature control, MES system data traceability.


Automotive electrification will inevitably introduce more PCBs, and the demand for automotive coating is increasing. Moreover, PCB presents the trend of precision, and the requirements for selective coating are higher and higher. Axxon has launched 2mm wide spray valve and 1mm line width spray valve for precision coating application. In the future, axxon will seek continuous technological breakthroughs in coating precision and process control, so as to better serve the coating of automobile PCB.



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