How to deal with the causes of uneven printing ink such as Stenter? As far as the ink is concerned, 1. Assuming that the ink is not selected properly, the ink should be changed; 2. The ink dries too fast, so choose a slow-drying ink; 3. The viscosity of the ink is too high, so choose a low-viscosity ink. Perhaps the ink is not well formulated, or the normally formulated ink is mixed with the ink skin.

    During printing, it shrinks and softens due to the effect of the solvent, which blocks the mesh holes that should have penetrated the ink, and acts as a printing film, preventing the ink from passing through. In order to avoid this shortcoming, the prepared ink (especially the old ink) should be filtered once before use. When the used printing plate is used repeatedly, the old ink on the printing plate frame must be completely removed. When storing the printing plate after printing, clean it thoroughly (including the squeegee). Assuming that in accordance with the above request, there will be no incidents of uneven inking.

    Assuming that the tip of the blade is damaged, there will be marks along the direction of movement of the scraper. Especially when printing transparent objects, significant uneven inking will occur. Therefore, the front end of the circuit board must be well protected from damage. If it is damaged, it must be carefully polished with a grinder.

    The unevenness of the printing table will also affect the uniformity of the ink. The convex ink layer is thin and the concave ink layer is thick, which is also called uneven inking. In addition, if the substrate is not in harmony or there is dust on the printing table, the above shortcomings will also occur. Another reason is that the screen plate of the Flat Screen Printing Machine is blocked and the screen plate needs to be cleaned; the printing pressure of the screen printing machine is lacking, so the printing pressure should be increased; if the pre-pressing treatment of the substrate is not good, the printing should be strengthened. Pre-compression disposal of objects.