When it comes to the pad printing machine, I believe everyone knows it well. Its printing products can be seen everywhere in our lives, so the cleaning of the pad printing machine is very important. If it is not clean, it will affect the print quality and shorten the service life.
- Template pollution
The main cause of stencil contamination is improper ink control, which causes dry ink to remain in the mesh.
Cleaning method: When using solvent-based ink or water-based ink, the reason is that the ink is too thin or too thick. What should be done is that the above changes cannot occur when the toner is adjusted. When using UV-curable ink, try to avoid the screen from being exposed to UV rays. Light and sunlight exposure.
- Graphic printing position
When there is dirt or dry ink on the printed part of the graphic, it must be decontaminated.
Cleaning method: Lift the screen frame after stopping the printing machine, and rub the bottom of the template with emery cloth soaked in solvent, being careful not to apply too much force. Rubbing too hard will destroy the graphic interface of the latex layer, or even wipe off the latex layer, which will destroy the machine
- Contaminants on ink or printed materials
In order to make the mesh work normally, you should also pay attention to cleaning the dirt on the ink or substrate. The surface of the substrate can be contaminated due to electrostatic adsorption of pollutants in the air and harsh storage conditions.
Cleaning methods: Solved by improving storage conditions and process control. In addition, the use of electrostatic precipitators and printed material decontamination devices can also prevent the transfer of dust from the surface of the pad printer into the mesh.
- Ink control and printing speed control
Problems with ink control and improper control of printing speed can result in uneven ink supply and allow the mesh under the ink to dry quickly. The final cause of ink drying is improperly set or worn squeegee blades. When printing fine images, normal use requires that the ink plate at the edge of the squeegee is deformed or worn, and the sharpness of the surrounding image is reduced accordingly, which means that the ink may not pass correctly through the grid. If this problem is not fixed in time, the ink will dry out and stick to the mesh.
Cleaning method: Rotate the scraper regularly to prolong the service life of the edge of the scraper, or replace the scraper with a new one before the printing quality of the pad printing machine does not decline, so as to improve the problem that the quality of the machine is not very good when printing .
When cleaning the pad printing machine, the above matters and methods must be paid attention to, so as to ensure the better use of the machine and the smooth completion of production.
