Reason: the density of negative film is not enough; Improper flat screen plate making process; Printing slurry quality problems.Solution To Screen Plugging In Flat Creen Fabric Printing

resolvent:

     At present, all films are produced by computer. The higher the black density of the graphic pattern of the negative film, the better the shading effect. If the blackness is not enough, the worse the shading effect is, and the ultraviolet light is easy to pass through, which will cause mesh blockage; The fog degree of the negative film should be low. If the fog degree is high, it blocks the transmission of ultraviolet light. It needs to prolong the exposure time, which is easy to cause excessive exposure time and screen blockage.Solution To Screen Plugging In Flat Creen Fabric Printing

      Improper development and curing process of flat screen plate making will lead to screen blockage. When developing, it should be considered that ultraviolet light is transmitted from the screen printing surface to the scraping surface. The printing surface is fully illuminated and can be washed with high-pressure water; Solution To Screen Plugging In Flat Creen Fabric Printing

     The degree of light crosslinking of the scraping surface is smaller than that of the printing surface, and the adhesive film is tender. During flushing, the residual slurry without pressure should be used to wash it, so as to avoid the residual slurry blocking the mesh. Before curing, secondary exposure shall be carried out to make the adhesive layer fully photosensitive, and then the curing agent shall be coated.Solution To Screen Plugging In Flat Creen Fabric Printing

       During printing, the used slurry contains impurities or undissolved particles to block the mesh, so that the color slurry can not be scraped out from the mesh during printing, so the slurry should be filtered to remove impurities before use. When making the coating adhesive, we should choose the adhesive with good quality and the thickener with good compatibility. The conjunctiva should not be too fast when scraping.Solution To Screen Plugging In Flat Creen Fabric Printing