Etching process - pre-treatment process

Etching processing performs pre-treatment to ensure good adhesion between screen printing ink and metal surface. Pre-treatment is an essential step aimed at completely removing oil contamination and oxide film on the etched metal surface.

The ability of screen printing ink to adhere firmly to the metal surface depends mainly on the cleanliness and roughness of the surface. If there is oil contamination or oxide film on the metal surface, the ink may not be able to form good adhesion with the metal surface.

To ensure sufficient adhesion of the ink to the metal surface, it is necessary to remove the oil contamination and oxide film on the surface. In this process, electrodeposition cleaning is an effective means, which can ensure the cleaning effect and achieve good adhesion between the screen printing ink and metal surface.