The influence of water drop angle of FPC plasma cleaner on the bonding performance of FPC:
        In the bonding process, the FPC circuit board plays a very important role. The bonding strength is very demanding. With the development of the mobile phone industry, the FPC plasma cleaning machine can make the FPC circuit board bonding stronger and reduce the occurrence of the bonding process. Defects.

FPC plasma cleaning machine
        FPC alias: flexible circuit board, flexible circuit board.
        The specific application of the water drop angle tester in the FPC circuit board industry:
        The mobile phone includes a mobile phone cover, a TP display and a back cover. The bonding of all three parts requires the use of FPC circuit boards. Since the mobile phone is separated before bonding, it must be bonded well. However, the FPC circuit board needs to be cleaned by a plasma cleaning machine before being pasted, and then a contact angle tester is used to test the plasma cleaning effect. To ensure good results, multiple points need to be tested. The fingerprint recognition module is under the mobile phone and connected to the mobile phone, or it can be glued through the FPC circuit board.
        In the process of mobile phone bonding, FPC circuit boards play a very important role, and the requirements for bonding force are also very high. In the past, traditional manufacturers did not do the drop angle test after the plasma cleaner was cleaned, so the bonding effect could not be judged. In the actual use process, the defect rate increased. With the development of the mobile phone industry, the requirements for firm bonding of FPC circuit boards have further increased, and the defect rate in the bonding process has also been reduced. More and more manufacturers have begun to adopt testers.
        After cleaning with a plasma cleaner, the contact angle needs to be measured. What are the standards?
        The traditional requirement is within 30 degrees, and some companies with high standards and strict requirements even require between 10 degrees and 15 degrees. By purchasing a professional water drop angle tester, the angle can be detected more accurately.
        Before the FPC circuit board was cleaned, the angles were taken to the customer for measurement. The angles ranged from 40, 50, and 60 degrees. The customer was not clear about the effect of plasma cleaning, resulting in poor adhesion of FCP. Have not found a good method and standard for judgment. After using the water drop angle tester, the cleaning effect of the plasma cleaner can be controlled within the standard range required by the customer. Since the effect of plasma cleaning can be measured by the water drop angle, if this effect is exceeded, the plasma equipment can be adjusted at any time.
        The contact angle tester can detect uneven surfaces, curved surfaces, and other irregular surfaces. The detection data of hydrophilic products (low angle, less than 20 degrees) is very close to the true angle, and the accuracy can reach plus or minus 0.1 degrees.