1 Use a strong, non-deformable metal mesh frame for color screen printing. This is because if an unsturdy frame or a wood frame plate is used, skew or deformation is likely to occur during printing, the quality of the screen plate will be reduced, and accuracy will be difficult to guarantee. When the deformation is severe, the screen plate cannot be used. This will affect the print quality. So you must use a sturdy metal mesh frame. 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.
2 The use of scraper hardness is generally 70 degrees Shore hardness, scraper blade edge to high accuracy. Due to its moderate hardness, it is conducive to meeting printing requirements, facilitating the improvement of printing accuracy and ensuring the printing quality.
3 The screen printing ink with high viscosity should be used as much as possible. The ink with higher viscosity will not cause the problem of thickening of the graphic lines due to the diffusion of oil, which will help to improve the fineness and sharpness of the lines.
4 Photo-screen plate screen number (line / inch), usually between 55 ~ 120 lines. This can reduce or avoid moire. The general relationship between the number of screens and the number of screens is:
Mesh (mesh number): 4.2X screen number.
2 The use of scraper hardness is generally 70 degrees Shore hardness, scraper blade edge to high accuracy. Due to its moderate hardness, it is conducive to meeting printing requirements, facilitating the improvement of printing accuracy and ensuring the printing quality.
3 The screen printing ink with high viscosity should be used as much as possible. The ink with higher viscosity will not cause the problem of thickening of the graphic lines due to the diffusion of oil, which will help to improve the fineness and sharpness of the lines.
4 Photo-screen plate screen number (line / inch), usually between 55 ~ 120 lines. This can reduce or avoid moire. The general relationship between the number of screens and the number of screens is:
Mesh (mesh number): 4.2X screen number.
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