Before printing and finishing, check whether there is dirt or dust on the photosensitive strand surface of the film and the glass surface of the printing table. It is best to wipe it with cotton yarn dipped in alcohol before working. The surface of the film attached with silver halide is the front, and the shiny side of the film base is the back. When printing, the film surface of the film shall be tightly bonded with the emulsion surface of the screen, and the bite line shall be reserved for exposure. Printing Problems Easily Neglected In Mass Screen Printing

      The exposure time shall be determined according to the type of photosensitive thorn, the coating thickness of photosensitive film, the black degree of positive picture and printing requirements. The thicker the coating layer of the photosensitive film, the longer the exposure time is required for the plate film to cure completely. Printing Problems Easily Neglected In Mass Screen Printing

     If the black degree of the picture and text on the positive picture is not enough, that is, it is gray but not black, the exposure time shall be shortened and the development time shall be extended accordingly, so as to make the non photosensitive part of the picture and text fully transparent.Printing Problems Easily Neglected In Mass Screen PrintingPrinting Problems Easily Neglected In Mass Screen Printing.Printing Problems Easily Neglected In Mass Screen Printing

      After development, sponge or clean paper with strong water absorption shall be used to quickly remove the water on the screen surface for hot air or natural drying. If the heating temperature is too high during drying, the image on the printing plate will produce errors in varying degrees or cause the screen plate to relax, affecting the overprint accuracy during printing.Printing Problems Easily Neglected In Mass Screen Printing

     In order to strengthen the plate stock, improve the water resistance and solvent resistance, and prevent ink leakage at the junction of the screen and the plate frame during printing, the image and text edges can be wrapped and reinforced with wide tape paper, Printing Problems Easily Neglected In Mass Screen Printing

      And the bonding place, pinholes and unnecessary openings on the screen can be blocked with screen sealing glue or photosensitive emulsion. Printing Problems Easily Neglected In Mass Screen Printing

      For the small stains on the pattern and a little photosensitive glue left, you can press and stick it with wide adhesive tape, gently wipe it with cyclohexanone or alcohol, or gently tap it with a small needle to keep the screen transparent. But the action is straight and gentle. If the action is too large, it will damage the screen.Printing Problems Easily Neglected In Mass Screen Printing