The rubber roller of the printing press mainly transfers ink on the offset press. Therefore, the rubber roller must be carefully cleaned during daily cleaning, otherwise the surface layer of the rubber roller and the pigment and resin will be oxidized to form a smooth and hard film, causing the surface to be vitrified. It affects the ink transfer. If it is often cleaned, the surface of the rubber roller will be uneven and not easy to use. Therefore, the rubber roller should be washed and stored for use when the machine is shut down.

The rubber roller of the printing machine is used for a long time and is aging, coupled with the erosion of chemicals, causing the rotten glue to lose "slag". It is best not to use such rubber rollers, otherwise it will seriously affect the quality of printing.
In the offset printing operation, the rubber roller of the printing press produces ink emulsification due to "large water and large ink", forming a hydrophilic foundation on the smooth rubber roller, making it deinking. The solution is to remove the emulsified ink and use the deinking rubber roller. Wash with gasoline, mix and polish with 5% sodium hydroxide aqueous solution and pumice powder. At the same time, the metal roller (or hard roller) should be treated accordingly. The hard roller can also be polished with fine water sand under the state of sprinkling water. Be careful not to stay in the same place, otherwise it will damage the rubber roller. The fundamental method is to control the pH value of the water tank and improve the ink balance.

DECAI is a polyurethane rubber and plastic manufacturer specializing in the production of PU rubber rollers, polyurethane rollers, polyurethane cushion blocks and other products. Since the establishment of the factory for more than ten years, we have continuously improved the technology to provide customers with better products.