Manufacturing process of hollow flexible circuit board for new energy vehicles
A technology for flexible circuit boards and new energy vehicles, which is applied in the direction of removing conductive materials by chemical/electrolytic methods, and can solve the problems affecting the performance of flexible circuit boards, poor solution etching accuracy, and poor hollow molding accuracy. The solution etching time is short, the precision is easy to control, and the effect of improving the scale
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[0025] The manufacturing process of the hollow flexible circuit board of the new energy vehicle includes the following steps:
[0026] S1. Prepare materials, cut the copper foil with polyimide base film according to the design size, and obtain the copper foil base film;
[0027] S2. Paste dry film, use dry film pasting equipment to paste a layer of dry film on the copper surface of the obtained copper foil base film, control the air pressure 0.4MPa, temperature 115 ° C, and conveying speed 2.5-3.5m / min in the dry film , the speed of transmission matches the air pressure and temperature, which promotes the high efficiency of film attachment, greatly reduces the probability of air bubbles, copper leakage, and wrinkles, and the quality of dry film paste is high, which promotes the improvement of the finished product quality of flexible circuit boards;
[0028] S3. Exposure: use an exposure machine to expose the copper foil base film with a dry film, and then transfer the circuit ...
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