Materials of printing ink, colors, substrates, printing technique.please choose out of the following lists.
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In screen printing, the ink foams when it goes through the mesh. De-foamer is used to eliminate these bubbles. Although silicone de-foamer gives good effect even with small quantity, transparent ink becomes cloudy. Non-silicone de-foamer is chosen for transparent ink
The phenomenon that the image gradually becomes thick in the printing process. Dot gain happens when low-viscous ink is printed too thickly or when the ink has smearing problem.
The problem that the ink drips from the screen. Thixotropic agent improves dripping
