Silicone Rubber Roller Hardness Selection
🕙 2023-11-01 👆
Adhesive type and hardness are very important for different printing methods, and different printing requirements have different mechanical and chemical standards for rollers. Taking offset printing as an example, the hardness of the printing roller can reflect the quality of the rubber to a certain extent, and the hardness is too large to enhance its corrosion resistance, but the ability to carry water and ink decreases, and the loss of the printing machine and the wear of the PS version of the image increases. If the hardness is too small, the service life of the roller may be too short due to poor pressure resistance and corrosion resistance.
The principle of determining the hardness of the printing roller is: on the premise of ensuring good water and ink ability, and sufficient resistance to chemical corrosion and physical action, the hardness of the printing roller should be appropriately reduced.
In actual printing applications, the selection of appropriate rubber type can avoid the printing quality failure caused by the rubber roller to ensure that the printing is relatively stable and smooth.
In addition, the roller used in different places has different properties. The rubber type of the roller used in the automatic cleaning device of the printing press has good transmission and self-cleaning ability of cleaning agents, and good corrosion resistance; In addition, there are now special cleaning rollers to solve the problem of paper wool and paper powder.
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