What are the production process of huizhou flexible circuit board hollow out board

Flexible circuit board hollow board, also known as flexible circuit board, is a kind of printed circuit with high reliability and excellent flexibility. This kind of hollow plate circuit can be bent at will, folding light weight, small volume, good heat dissipation, easy installation and other advantages in the electronics and communication industry has been increasingly attached importance to and widely used.

The production process of flexible circuit board hollow out board can be summarized as the following process:

1. Flexible circuit board cutting: according to the required size of the base material into the initial cutting, size is required and its surface can not have creases, stains and so on.

2. CNC drilling of flexible circuit board: high-speed drilling of board parts according to the aperture or pattern and shape in the design drawings.

3. Copper plating of flexible circuit board: the principle of chemical copper precipitation on the surface of the substrate and the surface of the copper hole is coated with a thin layer of copper layer, and the thickness of it is checked, the copper plating is required to be uniform and smooth. And the appropriate chemical washing, ll be easy to remove the surface.

4. Stick dry film on the flexible circuit board.

5. Exposure on both sides of the flexible circuit board: the semi-finished FPC engraving board is placed under certain lighting conditions to detect whether there is a pinhole break, etc.

6. Flexible circuit board development: display negative image.

7. Flexible circuit board etching: remove the oxide and impurities on the surface of the hollow board, enhance the adhesion ability of copper and surface.

8. Remove film and chemical cleaning: remove more than part of the dry film attached.

9. Paste protective film: the protective layer on the surface of FPC hollow plate.

10 lamination: the film is more firmly attached to the FPC hollow plate surface.

11. Electroplating lead or nickel gold: some FPC hollow plates need to be plated with this metal to achieve special functions.

12. Cutting and punching shape: to deal with the appearance of the hollow board of the flexible circuit board, whether there are burrs, drawing and other bad appearance phenomenon.

13. Detection: the flexible circuit board hollow-out board obtained by the system is tested and compared with the standard sample to see whether its appearance and performance are consistent.

Thus, the production of flexible circuit board hollow out board is the need to go through many complex process, each process requirements are very high and have a very important role in its molding. Of course, with the continuous progress and maturity of technology, many technological processes can achieve one-step or complete automatic production in the future.