The application of conductive ink on PCB is often used as a direct printed circuit, which can replace the traditional embossing or etching method. The process is simple and the production time of finished products is shortened, such as common RFID tags.
But this time, the customer's FPCB product needs to be turned on by pressing, so CM is required to print conductive ink on the traditional immersion gold surface to protect the surface and conduct current at the same time.
The difficulty of this product is that the adhesion of the ink on the metal surface is limited, and the ink is prone to hang up. To this end, Chee Mau worked with end customer to conduct cross-combination verification of various inks and different process methods, and used manual scratching and alcohol cloth wiping test methods to finally meet the needs of customer.