How to judge whether the hardness of the printing rubber roller meets the requirements?
Whether the hardness of the printing roller meets the requirements has an important impact on the normal operation of the printing machine and the quality of the printed matter. So, how to judge whether the hardness of the printing rubber roller meets the requirements?
First of all, we need to understand the hardness standard of printing rubber rollers. The hardness of the printing rubber roller is generally expressed by the Shore hardness, and the standard hardness range is generally between 40-90 degrees. If the hardness is too high, it will lead to too much printing pressure and affect the printing effectIf the hardness is too low, it will lead to insufficient printing pressure, which will affect the clarity and adhesion of the printed matter.
Secondly, we can judge whether the hardness of the printing roller meets the requirements by observing and touching. If the surface of the printing roller is smooth and delicate, and there are no obvious flaws and defects, then its hardness should meet the requirements. On the other hand, if the surface of the printing roller is rough, cracked or obviously soft, then its hardness may not meet the requirements.
In addition, we can also use some tools to check the hardness of the printing roller. For example, a hardness tester can be used to accurately measure the hardness of a printed roller, or a surface roughness tester can be used to inspect the surface roughness of a printed roller. These tools provide a more accurate reflection of the hardness of the printing rollers.
Finally, we also need to pay attention to the service life of the printing roller. If it is used for too long, even if the hardness meets the requirements, it may cause cracks, falling off and other damage on the surface of the rubber roller, which will affect the printing effect. Therefore, it is recommended to replace the printing rubber roller regularly to ensure the normal operation of the printing machine and the quality of the printed matter.
In short, judging whether the hardness of the printing rubber roller meets the requirements requires us to observe and test from many aspects. Only the hardness of the printing roller meets the requirements can provide a strong guarantee for the normal operation of the printing machine and the quality of the printed matter.