Screen printing machines are prone to failure when printing, some are unilateral reasons, but more are complicated reasons, so the operator of the flat screen printing machine should pay special attention to the cause of the failure, so as to take corresponding countermeasures.
1. Blocking, that is, the part of the image with mesh can not transfer ink during printing. This phenomenon will affect the printing quality. In severe cases, normal printing will not be possible.
The solution adopted is as follows: change the printing material that is not easy to drop powder, reduce the viscosity of the ink, thereby avoiding blocking. When selecting the ink, the weather influence should be considered, the viscosity of the ink should be appropriately reduced, and the fluidity of the ink should be improved.
2. The ink does not adhere to the substrate of the flat screen printing machine
Solution: Regularly clean the flat screen printing machine to remove oil and dust, corona and plasma on the surface of non-polar products, improve the adhesion of the ink on the surface of the screen printing machine, and replace the ink with high viscosity, when appropriate. You can add new ink.
3. Ink film edge defects, when printed with a flat screen printing machine, the edge of the saw is broken, the general quality of the screen printing plate, the edge should be smooth.
The thickness of the flat screen printing mechanism plate can be ensured by selecting a high-mesh screen and a high-resolution photosensitive material to reduce the occurrence of defects.
Automatic metering device, printing object spacing 1-0.5 (mm) to save materials. At the same time, the protection screen will not be broken by the knife. Usually, the parts of the automatic screen printing machine should be checked regularly for looseness, whether the screws are tightened, etc. If you find a fault, do not open it yourself, in case the line is wrong. It may damage the whole machine. It is best to ask a professional to guide the repair. Finally, if the automatic screen printing machine takes a while to start using, then clean the machine and put it in a cool, dry place to prevent moisture.
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