1. In any case, the temperature of the ink must be kept below 20-25 ° C I, and the temperature change should not be too large, otherwise it will affect the viscosity of the ink, the quality and effect of screen printing.
Especially when the ink is stored outside or at different temperatures, it must be placed at ambient temperature for several days before it can be used again, otherwise the ink tank can reach the proper working temperature. This is because using cold ink will cause screen printing to fail and cause unnecessary trouble. Therefore, in order to maintain the quality of the ink, it is best to store it under normal temperature process conditions.
2. Before use, the ink must be fully and carefully mixed manually or mechanically. If air gets into the ink, let it sit for a while. If dilution is required, first mix well and then test its viscosity. Ink barrels must be sealed immediately after use. At the same time, never put the ink on the screen back into the ink tank and mix it with unused ink.
3. It is best to use a compatible cleaning agent for net cleaning, and the cleaning agent should be very thorough and clean. When cleaning again, it is best to use a cleaning solvent.
4. After the ink is dry, it must be done in a device with a good exhaust system.
5. In order to maintain the operating conditions, screen printing is carried out at the operating site that meets the technical requirements of the process.
The ink plays a role in protecting the copper foil during the production process, so that the copper skin is not exposed and affects the subsequent processes. There are photosensitive inks, carbon oil and silver oil, and both carbon oil and silver oil are conductive. Commonly used ink colors are white oil, black oil, green oil, red oil, blue oil and butter.
The above is an introduction to the matters and functions that should be paid attention to when choosing PCB ink. I hope it can provide you with some references!
