Method for machining solder mask of circuit board through laser
A laser processing method and circuit board technology, applied in the directions of printed circuits, metal processing, laser welding equipment, etc., can solve the problems of affecting product yield, increasing enterprise production costs, and long product production cycle, and shortening product production cycle. The effect of simplifying the production process and shortening the production cycle
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[0040] A kind of laser processing method of circuit board solder resist layer, with reference to figure 1 , the steps are as follows:
[0041] (1), pre-processing
[0042] Alcohol, ethyl acetate, acetone and other cleaning solutions are used to remove oxidation and oil stains on the surface of the circuit board. The pretreatment method of the present invention is the same as the pretreatment process and cleaning solvent used for the circuit board in the prior art.
[0043] (2), coating printing
[0044] Using electrostatic spraying or printing process, the solder resist green paint is coated and printed on the surface of the circuit board.
[0045] Solder resist green paint (liquid photo-induced solder resist, also known as green oil) is a protective layer that is coated on the circuit and substrate of the printed circuit board that do not need to be soldered. The purpose is to protect the formed circuit pattern for a long time. The main components include: epoxy and acryli...
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