The Tension Requirements Of Screen Printing Mesh
Printing screen mesh for different uses in the screen printing industry require different tensions.
Color screen printing mesh dot printing, in order to ensure the accuracy and reductivity of the tone value, requires a tension of 20-30N / CM. Fine silk screen prints, scale dials, etc., tension is 12-18N/CM. General graphic printing, tension is 8-12N / CM. Manual printing, rough printing products, or for precision, size, etc., the tension is 8-12N/CM. It is worth noting that when the color block is overprinted, in order to make the overprinting position accurate, not only the screen tension should be greater than 10N/CM. And several sets of overprinted plates must reach the same tension, which is more important for dot printing, otherwise it will cause deviations of moiré and hue.
Why do dot printing require a higher tension mesh version?
A. The higher tension mesh version can obtain a lower mesh distance. When the mesh distance is doubled, the deformation of the printed graphic will be increased by 3 times. Therefore, when the mesh tension is low, the ink is uneven and the dots are Increase distortion and affect color uniformity.
B, lower grid spacing, screen printing can use less pressure in the screen printing, the screen version wear reduces the life of the screen and prolongs the printing times.
C. The small scraping pressure is beneficial to avoid ink and deformation around the dot, improve the sharpness of the edge of the dot, and ensure the printing effect of screen printing mesh.