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沪瑾辊业Hujin Roller Industry

MR Ren 18916939942
MR Duan 18018278881
CZhujin@163.com
Group 5, Xiangxiang Village, Hengshanqiao Town, Wujin, Changzhou

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Glue used in rubber rollers and its printability

Time:2019-08-17    Hit Count:   
The rubber roller process mostly uses the rubber coating process to glue the rubber together after the metal rubber core is applied. In order to obtain high quality products, rubber roller adhesive is one of the key factors determining the service life of the product; the rubber roller forming process can be coated with silicon on the metal core by extrusion, injection, injection or the like. rubber.


 
Advances in technology have also changed the mechanical or manual bonding process to achieve full mechanical automation production. The rubber roller process molds the silicone tube and the glued metal core, and vulcanizes it in a vulcanization tank or oven. Thermal bonding under strict process conditions.
 
There are many kinds of rubber materials to be used in the rubber roller production process, among which silica gel, rubber and polyurethane rubber are more common. For example, silica gel glue: it can bond hard-to-bond silica gel to metal materials. For 50-90 degree soft and hard silicone material compatibility is good, spanning a large range.
 
The printability of the rubber roller is to ensure the compatibility of the printing process technology with the device itself. Ensuring its printability is critical to the effective control of print quality. Wettability refers to the ability of the surface of the roll to be infiltrated by the liquid film or ink film when the rubber roll is in contact with the ink or dampening solution.
 
Its wettability depends not only on the cohesion and adhesion of the ink or dampening fluid, but also on the free energy or interfacial tension of the two-phase interface. Its surface material properties make it a hydrophilic and oil-resistant water roller, a lipophilic and water-resistant ink roller. If it is improperly handled during use and maintenance, it will cause hardening, cracking, aging, etc., which will easily cause changes in wettability, which will directly affect its transfer performance.
 
Resilience refers to its ability to instantly return to its original state after eliminating external forces. Whether in a wetting system or an inking system, the rubber rolls are aligned with the hard rolls and are periodically rolled under high speed conditions. Its restorability is related to its elasticity and hardness. Therefore, the setting of elasticity and hardness depends on the working speed of the offset printing machine and its working position in the system.
 
Transmissibility refers to the ability of a rubber roller to adsorb and transfer ink or dampening fluid under contact pressure. To maintain good and stable transferability, control or adjust the contact pressure between the rolls. An important factor in controlling its printability is achieved from the above aspects.

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