Introduction of the causes of blisters in the light touch switch
Release time：2019-07-17 Clicks： Click
If we find blisters while using the touch switch, what causes them and how? We will give you a better introduction of these aspects below.
The main material of this switch is our LCP material. Every time our material supplier comes to us, before injection molding, we will have a working procedure. This working procedure is to dry our plastic material, which is also called quenching by the industry. So what is the main purpose of quenching? The purpose of quenching is to give our plastic material with its own moist water drying, using our plastic material to achieve the drying effect. After quenching, we will carry out my next step, namely our injection molding process, and then carry out our product assembly, inspection, packaging and shipment.
After so many processes, then why our light touch switch after the furnace will have the abnormal phenomenon of bubbling? Let's take a look at the pictures on our left, we switch blister or serious problem it is also very simple, actually our SMD process can produce high temperature, LCP material itself is a product of high temperature resistant, is also very accord with SMD process of material, in our procedure, quenching, the way of our plastic material during quenching, if there is no the material complete drying, our plastic there's a certain moisture moisture be carried out in the next working procedure, in the absence of high temperature operation, it is difficult for us to find that it bubbles, So we will have a PCB test in the inspection step.