Everyone knows that the screen printing process using a screen printing machine has the advantages of bright color, strong three-dimensional effect and strong adhesion compared with the printing process performed by ordinary offset printing machines and pad printing machines. But sometimes, when the screen printing machine is operated for printing, there will be color fading. Then, what is the problem of the color fading of the screen printing machine? Inexperienced operators may not know the specific reason. The following editor will tell you Here are three common reasons that cause silk screen fade.
       The reason for the color fading of the silk screen may be grease or dust on the surface of the substrate, which will cause the ink to not adhere firmly and easily fade. Therefore, it is necessary to wipe the substrate before printing to ensure that the surface of the substrate is free of dust and grease. Of course, you can also choose Agere Machinery automatic screen printing machine, which has the functions of burning and removing grease and electrostatic ion wind.
       The reason for the color fading of the screen printing may also be improper selection of ink or dilution solvent. Different material substrates may use different ink and dilution solvent. When the selection is different, it may cause the phenomenon of easy color fading after printing. Improper ratio with diluent and curing agent will also cause color fading after printing.
       Incomplete curing or over-curing is also one of the reasons that cause the screen printing to fade. If the curing time is too short, it will cause incomplete curing, which will lead to too long time, and cause the ink to crack. Different brands of screen printers have different powers of UV lamps, so the curing time is also different, so you should set the curing time according to the instructions.