Screen printing ink performance solution - yield value

3. Yield value.

The yield value is the limiting stress that applies a certain external force to the fluid, from elastic deformation to flow deformation, and the minimum stress that must be applied when the ink starts laminar flow. The yield value is too large, the ink is hard, it is difficult to open, the inconvenience of inking, and the leveling property are poor; the yield value is too small, and the reproducibility of printed thin lines and dots is poor. The silk ink layer is thick, so the yield value cannot be too small. Screen printing ink according to different requirements, the yield value can be 1000dyn/cm2 to 3000dyn/cm2, when printing fine line drawing, the yield value should take a high value.

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