When it comes to pad printing machine, I believe we all know better, its printing products can be seen everywhere in our lives, so it is very important for the cleaning of pad printing machine. If it is not clean, it will affect the print quality and shorten the service life. The following is a small series for you to explain some matters that need to be paid attention to in the cleaning process of the pad printing machine.
1. Template pollution
The main cause of stencil contamination is improper ink control, resulting in dry ink remaining 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, the above change can not occur in the toner adjustment state, the use of ultraviolet curing ink, should try to avoid the screen by ultraviolet lamp and sunlight exposure.
2, graphic printing position
When there is dirt or dry ink in the graphic printing part, it must be decontamination treatment.
Cleaning method: After stopping the printing press, lift the grid frame and rub the bottom of the template with a solvent-soaked emery cloth, taking care not to exert too much force. Rubbing too hard will destroy the graphical interface of the latex layer, or even erase the latex layer, which will damage the machine.
3. Contaminants on ink or printing materials
In order to make the screen work normally, attention should also be paid to cleaning the dirt on the ink or substrate. Due to electrostatic adsorption of pollutants in the air and poor storage conditions, the substrate surface will be polluted.
Cleaning method: By improving storage conditions and process control to solve. In addition, the use of electrostatic precipitators and printing material decontamination devices can also prevent the transfer of dust from the surface of the pad printer to the mesh.
4, ink control and printing speed control
Ink control problems and improper printing speed control can lead to uneven ink supply and rapid drying of the mesh under the ink. One reason for ink drying is that the ink scraper is improperly set or worn. When printing fine images, the ink plate on the edge of the ink scraper is deformed or worn during normal use, and the sharpness of the surrounding image is correspondingly reduced, which indicates that the ink may not pass through the grid correctly. If this problem is not solved in time, the ink will dry out and stick to the mesh.
Cleaning method: Rotate the scraper regularly to extend the service life of the edge of the scraper, or replace the new scraper before the printing quality of the pad printing machine does not decline, so 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 that the machine is better used, so as to successfully complete the production.
