The four basic points of color screen printing

First, use a sturdy, non-deformable metal mesh frame. If the frame is skewed or deformed, the quality of the screen plate will be reduced, and the accuracy will be difficult to guarantee. When the deformation is severe, the screen plate will not be used, which will affect the printing quality. The frame size of a set of color screen printing plates should be the same. Mainly for printing with a unified positioning rules, and easy to color printing. The number of screen meshes of a set of color screen printing plates should be the same as that of the screen materials, and the tension of the stretch net and the thickness of the screen plate should be the same. It is mainly to ensure that the ink layers after printing of different colors are uniform and have the same effect, and the original colors and graphics are perfectly reproduced.

Second, the scraper hardness is 70 degrees Shore hardness. Scraper printing accuracy is higher. Because the moderate hardness is conducive to meet the printing requirements, improve the printing accuracy and ensure the quality.

Third, use high-viscosity screen printing inks. High-viscosity inks do not suffer from the problem of thickening of the graphic lines due to the diffusion of oil, which helps to improve the fineness and sharpness of the lines.

Fourth, the screen number of screens for screen printing (line/inch) is generally between 55 and 120 lines. This can reduce or avoid moire.

The general relationship between the number of screens and the number of screens is: screen (number of lines): 4.2X screen number.