It is well known that pH is important for the stability of water-based inks, so the printing plant should first be equipped with a pH stabilizer. The pH stabilizer can supplement the amine and water volatilized from the ink transfer system during the printing process, which helps the viscosity of the ink to be stable and ensures the printing quality. Depending on the substrate, pH stabilizers are divided into normal and thin film types. When printing fine mesh wires, use a dedicated pH stabilizer. The general pH stabilizer is used to add 1~2% of the total ink volume every 30~40 minutes, or to add stabilizer to the circulating ink pump. This article will introduce you to the doctor blade system.

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.

Several indicators of the above scraper have different and similar aspects. When solving a specific problem, one of them can be used, and sometimes it needs to be comprehensively applied to completely solve the problem. For example, when there are some intermittent ink lines, it can increase the pressure solution or solve the problem by sharpening the knife; when there is a severely punishing dirty version, it needs to be combined in several aspects; one must use a sharp blade, two To increase the pressure, the third is to increase the distance between the scraper and the contact surface.

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