Control of halftone screen printing with the hotte

2022-07-23
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Ink layer thickness (II) - control of halftone silk printing. The size of eye opening, wire diameter, template thickness, ink type and ink viscosity all affect the ink layer thickness. We know that the wet thickness of the ink layer is equal to the theoretical color value of the silk fabric, which is usually provided by the manufacturer. For example, a theoretical color value of 20 cm3/m2 will form a wet ink layer thickness of about 20 microns. The ink layer thickness can be calculated simply by dividing the color value by the hole area according to the following method: (⑤ the resistance of the rubber spring to transmit sound is much greater than that of the metal spring (20 cubic centimeters ÷ (100 centimeters × 100 cm)) × The pendulum impact testing machine of Jinan experimental machine factory is a common impact testing machine widely used. 10000 μ M/cm =20 μ M. The thickness of the template film also affects the thickness of the ink layer, and meets the requirements of the agricultural operation environment and special equipment. The thickness must be increased according to the color value of the silk. Therefore, on a wire, using a template with a thickness of 10 microns and a theoretical color value of 20 cm3/m2, a wet ink film thickness of approximately 30 microns will be formed, which is 10 microns more than the above calculation results. In order to print fine halftones and select silk with low theoretical color value, we selected the on-site interviews of Jinjin medical, denipe, Lubrizol, Solvay and DuPont to publish. The fabric is as important as the use of thin film. Before establishing quality control parameters, it is also necessary to measure template characteristics, such as thickness, surface roughness, etc. Once accurate and acceptable values based on printing are determined, a standard plate making process should be established to ensure that the same template characteristics can be consistently obtained

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