The harm of fingerprinting to products in the production process of Shenzhen Line factory

FPC row line in the process of processing if you do not pay attention to the finger to touch the circuit board pad, especially FPC row line surface treatment will cause oxidation, soft surface oxidation of FPC row line in the welding element device,  It is easy to fall off and scrap, because the finger print is sweat stain, composition is some inorganic salt and fat, etc., easy to cause the paralysis of the circuit board, so what is the harm of a small finger print?  Let's talk about it in detail.  

Harm of finger print:  

1. Finger contact with THE FPC line plate before welding will lead to poor adhesion of the covering film under welding.  

2. In the process from resistance welding to packaging, bare hands touching the surface of the sunken gold plate will lead to unclean surface and poor weldability.  

3, finger touch and FPC line will make the surface of the copper chemical reaction in a very short time, resulting in oxidation of the copper surface, after a little longer time in electroplating after obvious fingerprints, uneven coating, in the appearance of the product caused serious adverse.  

4, printing wet film or screen printing line and pressure film before the board surface with fingerprint oil, easy to cause dry/wet film adhesion decline, in electroplating lead to infiltration and plating separation, gold plate is easy to cause the surface of the pattern, in the completion of welding resistance after the surface oxidation, Yin and Yang color.