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Mineral water label: how to solve the electrostatic problem in label printing?
time:
2020/10/10
Source:
Static electricity is generally considered to be commonplace and harmless. However, in the process of label printing, because there are many electrostatic problems, static electricity will greatly affect the printing quality. The most common are the following:
1. after screen printing, the ink on the print is pulled into a fluffy shape together with the screen, and the "flying" ink filament is disconnected only after the workpiece is taken out.
2. When overprinting, the ink edge and pattern edge of the previous color repel each other and cannot match well with the ink edge of the next color, so ink cannot be printed between the two colors.
3. During screen printing, the workpiece will stick to the screen, especially at the screen position at the end of the squeegee movement.
4. The printed materials stick together and cannot be separated.
screen printing in the presence of static electricity can lead to many quality problems, and even make the printing can not continue. How to avoid and eliminate static electricity in screen printing?
1. The workpiece itself is charged. At this time, the surface can be de-static using an antistatic device before screen printing. The method is very simple. You can use a static elimination device to eliminate static electricity on the surface of the workpiece, and you can print after processing.
2. Screen-printed plastic parts are static. Antistatic agents can be added to the plastic formula in advance, which requires the production of plastic raw material suppliers to complete.
3. You can also add an antistatic coating method to eliminate static electricity on the electrostatic surface.
4. Use ink solvents properly. Even if the ink has good solvent mixing properties, a solvent with good conductivity can adjust the ink viscosity.
5. Increase the workpiece grounding on the screen printing equipment to discharge charge and eliminate static electricity.
Therefore, because static electricity is very common, please do not ignore the impact of static electricity in the label printing process. Try to avoid and eliminate the adverse effects caused by static electricity. If you want to pay more attention to this aspect in the production process, you can use the above method to achieve.
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