The final protective effect of coating adhesive depends not only on the performance of the material itself, but also on the rigor of the construction process. In practical production, common coating methods include brush coating, spray coating, dip coating, and automated selective coating.

The brushing method is easy to operate and is often used for small batch production or local maintenance; The spraying method has high efficiency and is suitable for medium scale production, but attention should be paid to controlling the atomization pressure to avoid uneven coating or the generation of flying wires; The immersion coating method can provide extremely thorough closed coating and is the most economical way in large-scale or mass production, but it requires extremely high control over immersion time and pulling speed.

Regardless of the process used, surface treatment before coating is the key to success or failure. The surface of the circuit board must undergo strict cleaning and drying treatment, thoroughly removing oil stains, dust, and residual moisture. If necessary, preheating and baking are also required to ensure that the coating adhesive can adhere firmly.

In addition, the temperature and humidity of the construction environment must be strictly controlled. Excessive humidity can easily cause the paint film to turn white or bubble, while low temperature can affect the fluidity and curing effect of the paint solution.

After coating is completed, the flatness, glossiness, and the presence of defects such as bubbles and pinholes of the coating need to be inspected by naked eye or professional instruments to ensure that each circuit board can obtain uniform and flawless perfect protection.

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