Shenzhen FPC hollow out board production process

FPC hollow board, also known as flexible circuit board, is a 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 FPC hollow plate can be summarized as the following process:  

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

2 CNC drilling: according to the design drawings of the aperture or flower pattern such as size and shape of the plate into high-speed drilling.  

3 copper plating: the principle of chemical copper precipitation on the surface of the substrate and the surface of the copper hole plated with a thin layer of copper layer, and check its thickness, the requirements of the copper plating to be uniform and smooth.  And the appropriate chemical washing, will be easy to remove the surface.  

4. Apply dry film.  

5. Two-side exposure: place the semi-finished FPC engraving board under certain lighting conditions to detect whether there are pinholes and broken lines.  

6. Development: Display the image of the negative.  

7 etching: remove the oxide and impurities on the surface of the hollow plate, enhance the adhesion ability of copper and the 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. Segmentation and punching shape: to deal with the appearance of FP C hollow board, whether there are burrs, drawing and other bad appearance phenomenon.  

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

It can be seen that the production of FPC hollow plate is the need to go through a number of complex technological processes, the requirements of each process is very high and has 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.