Screen printing plexiglass plate, why printed after a period of time there have been a lot of small cracks, a dense one?
Screen cracking of plexiglass plate may be a problem with the plate. Another possibility is that the ink used for screen printing has a problem. If it is cracks caused by poor plate quality, we can find a piece of silk that had been printed before, and there is no scrap leftover to judge, use the same ink system screen printing, if there is no crack, it is the quality of the plate is not good, maybe the plate Too much water, you can try to heat the plexiglass sheet 60 degrees after baking 30 minutes in silk screen, perhaps to solve. If cracking still occurs, it may be the cause of the ink. Since the plexiglass is corroded by the solvent, cracking may be caused. Therefore, if the ink used is not suitable for plexiglass, such as an ink containing a solvent such as toluene, the plexiglass sheet may be cracked in the screen printing. When the crack is generated, it can be screen-printed with ink that has not been screen-printed before (can be a different color), quickly determining whether the ink is a problem, reducing time and avoiding material waste.
In addition, when the plate has static electricity, it is easy to adhere to dust. Before screen printing or filling, use a suede or a soft cloth stained with 1% soap and water to clean it.
