Printing Roller

The newly cast rubber roller should not be put into use immediately. Since the internal structure of the newly cast rubber roller is not stable enough, it is easy to reduce the service life if it is put into use immediately. Therefore, the new rubber roller that has just been released should be placed for a period of time, so that the rubber roller maintains a relatively stable state after being exposed to the ambient temperature and humidity, which can increase the toughness of the colloid and thereby improve the durability. Proper storage of idle rubber rollers. After the rubber roller to be used should be cleaned, the plastic film is used to seal the gel and placed on the rubber roller frame. Do not stack a few pieces or place it by the wall, so as to avoid the undue loss of the gel. . During the transportation process of the used rubber roller to the processing and casting, it is forbidden to throw the chaotic pressure or heavy pressure, keep the roller core unbiased and not bent, to ensure the normal use of the roller core. The roller head and bearing should be well lubricated.

We know that the precision of the rubber roller shaft head and bearing directly affects the effect of ink transfer and ink discharge. If the poor lubrication causes the rubber roller shaft head, the wear and clearance of the bearing will inevitably lead to the disadvantage of uneven printing ink color. At the same time, it will cause printing bar marks due to bad conditions such as jumping rubber and slip rubber. Therefore, the rubber roller shaft and the bearing should be filled with lubricating oil to prevent the normal use of the rubber roller and ensure the printing quality. In the offset printing technology, the key is the control of the balance between the water path and the ink path, and the balance of the ink and ink depends on the key components of the rubber roller and the ink roller, and the quality of the ink can directly affect the product quality. This is especially true for gravure, embossing, and flexo printing.

General printing companies maintain equipment once a week, including the maintenance of printing rollers. There are several ways to maintain:
1. After the daily production operation is completed, the rubber roller should be carefully cleaned and washed twice;
2. Cleaning of the printing roller must use the specified chemical, such as industrial alcohol, and must not use corrosive solvents;
3. Remove the rubber roller during holiday break to prevent deformation under pressure;
4. The protection of the surface of the printing roller should be wrapped in newsprint and placed in a dark and ventilated place.