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Dip coating and brush coating for anti - paint operation

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Dip coating and brush coating for anti - paint operation

2019-09-16
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Dip coating of anti - paint operation process

Dip coating has been widely used since the early stage of coating technology, and it is used in places that need complete coating.In terms of coating results, immersion is one of the most useful methods.

The advantage of dip coating method is: yuyao rub wire plate can be adopted by hand or active coating.This manual operation is simple and easy, small investment;High material transfer rate, can be completely coated all products without masking effect;However, the active dip coating equipment can meet the demand for more production.

The error and fallacy of dip coating method is: if the coating material container is open, the hefei screw board with the increase in the number of coating, there will be complex problems, need to change the material and clean the container on schedule, with the solvent according to the demand is also inexhaustible to make up for;When the coating is too thick and the circuit board is taken out, a lot of materials will be wasted due to dripping.It is necessary to whitewash the response part;Whitewash/remove whitewash need a lot of manpower and material resources;Coating quality is difficult to control.To poor sex;Excessive wild manipulation can cause unnecessary physical damage to the product;

The main point of dip coating method is: should at any time monitor the loss of solvent with densitometer, nanjing rub wire board to ensure a reasonable ratio;The rate of immersion and extraction should be controlled.In order to obtain the right thickness of coating and can reduce bubbles and other shortcomings;It should be operated in a clean and controlled temperature/humidity condition.To avoid affecting the point knot force of the material;Should choose no residual adhesive and anti - static tape, if choose popular tape, must use deion fan.

Notes on dip coating:

The circuit board components shall be immersed vertically in the paint tank.

Do not dip the connector, unless carefully whitewashed, the circuit board should be immersed in 1 minute, until the bubble disappeared, and then slowly out.

The circuit board profile will form an average membrane layer.A large portion of paint residue should be allowed to flow back from the circuit board to the immersion machine.

The immersion rate of circuit board or components should not be too fast to avoid excessive bubbles.

Dip finish after re-use, if the general situation has skin signs, the skin removed, sustainable use.

防漆操作工艺之浸涂法





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