Screen printing method of thick copper printed circuit board
A copper printed circuit board, printed circuit board technology, applied in the direction of printed circuit, printed circuit manufacturing, printed circuit drying, etc., can solve problems such as uneven coverage, ink breakdown, low product qualification rate, etc.
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[0028] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a further understanding of the present invention can be obtained through the following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.
[0029] See attached figure 1 and figure 2 , which is a screen printing method for a thick copper printed circuit board according to an embodiment of the present invention.
[0030] Such as figure 1 As shown, the screen printing method of this kind of thick copper printed circuit board includes steps:
[0031] S10: Provide a printed circuit board 10 that has been electroplated and thickened with copper lines, and polish the printed circuit board 10 .
[0032] S20: Prepare the ink, and adjust the oil-opening viscosity of the ink to 50Pa·s˜80Pa·s. Preferably, the oil-ope...
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