Thicker areas of emulsion won’t cure completely during exposure and will not adhere to the screen completely. An uneven coating of emulsion results in uneven exposure. When the emulsion overall seems sturdy after exposure, but small pieces wash away during washout or flake off after the screen is prepared, inspect the surface of your emulsion. Pieces of emulsion flake off after exposure Often, these imperfections can be smoothed away with a fine piece of sandpaper, but if damage to the scoop coater is too severe, it will need to be replaced. If this is the case, you likely will see dried emulsion coating the nicks and imperfections in your scoop coater. A dirty scoop coater, or one that has begun to show wear and tear due to use, will interfere with the smooth line created by the edge of the coater, which in turn causes lines or other unevenness in the emulsion as you coat your screen. If lines or imperfections appear in your emulsion as you attempt to coat your screen, take a look at your scoop coater. Lines or flaws in the emulsion during coating If you are still struggling to create, expose and reclaim screens, here are some additional troubleshooting tips to help you address common screen printing issues with your emulsions.
#Silk screen emulsion how to
In a previous blog, we covered some common exposure problems and how to troubleshoot them.
Problems with your screen printing emulsion can be especially frustrating: You can’t turn out a good print if you have any problems with your screen’s emulsion or exposure.
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