The hardness of the squeegee is lower than the hardness of the chrome layer on the surface of the plate. If the hardness of the squeegee is too high, it will accelerate the wear of the printing plate and cause scratches: if the squeegee is of poor quality, it will wear out in a short period of time, resulting in the ink of the printing plate not being cleaned and the slash line appearing. At this time, you need to adjust the knife and change the knife frequently. This article will introduce you to the manufacturer of flexo squeegee.
Such periodic fluctuations not only have a certain influence on the plate roller base, but also the effect on the doctor blade is very obvious. The long time vibration will make the doctor blade scrape dirty, resulting in dirty version. A phenomenon occurs. By increasing the pressure on the doctor blade pressure, the problem can be solved in a short period of time, but the problem cannot be solved fundamentally, and it also has a significant impact on the service life of the doctor blade.
The polishing quality of the surface of the plate roller is mainly manifested by the number of burrs around the cell. The good quality plate has a clean, no burr, and the cells are clear and there are no impurities inside. This ensures that the plate roller does not damage the doctor blade during the printing process. After the squeegee is frequently replaced, if there is still a ruled line on the printed product, it can be generally determined that there is a problem of polishing quality of the plate roll.
Setting the pressure of the squeegee and maintaining it steady during the printing process and adjusting the height of the squeegee are two separate tasks. As long as the squeegee is within the range of the hydraulic cushion (leaving a margin of 2-3 mm), the system can control the actual printing pressure through a pressure gauge or digital pressure gauge. As long as the operator defines the printing speed, the rest of the work can be done automatically by the system.
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