What Materials Will Be Used In The Production Of Rubber Bending Rollers?

Rubber rollers use wild rubber and lamination during the manufacturing process, and lamination is a common production process for packaging and printing products. General printed products can not only achieve waterproof, antifouling, heat resistance, light resistance, and abrasion resistance, but also increase or decrease the brightness of the product surface, so that the product can meet the requirements of different situations. Products produced by lamination generally need to be trimmed or die-cut before they become products. Therefore, it is required that the coated product should not be deformed and have a good flatness, so as to ensure the quality of the finished product.

①The printing rubber bending roller mainly transfers ink on the offset press. Therefore, the rubber roller must be cleaned carefully every day, otherwise the surface layer of the rubber roller and the pigment and resin are easily oxidized to form a smooth and hard film, which causes the surface to vitrify and affect the ink transfer. If it is not cleaned frequently, the surface of the rubber roller will be uneven to affect its use. Therefore, the rubber rollers should be washed and put on standby during shutdown.

② In the offset printing operation, ink emulsification occurs due to "large water and large ink", and a hydrophilic base is formed on the smooth rubber roller to make it deink. The solution is to remove the emulsified ink, wash the deinking rubber roller with gasoline, and 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. Hard rollers can also be sanded with fine water sand in the state of water spraying. Be careful not to stay in the same place, otherwise the rubber roller will be damaged. The fundamental solution is to control the pH value of the water fountain fluid and improve the ink-water balance.

③The rubber rollers are used for too long, and the erosion of chemicals will cause the rotten rubber to "slag". Do not use such rubber rollers, or it will seriously affect the print quality.

④ In order to ensure that production and printing quality are not affected, spare ink rollers must be provided, but do not store too much to avoid aging. The storage environment of the rubber roller is the same as that of the blanket. In addition, the rubber roller should be straight and straight at the journal, and the surface should not touch each other or other objects to avoid deformation of the rubber roller.

⑤The rubber roller should not be stored near the large motor and generator. Because of the large amount of ozone generated by these devices, the surface of the rubber roller will age and crack. 6. When the weather is cold, the ink is uneven. Add auxiliary materials to the ink. It is forbidden to use infrared heaters and other equipment to bake the ink rubber roller to prevent the rubber roller from oxidizing.

It turned out that these laminating adhesives accumulated on the rubber roller were transferred and adhered from the "gap" part of the film (that is, the part where the film did not cover the printed sheet) in the case of inaccurate transfer of the paper. As the amount of film accumulated on the rubber roller gradually increases, the viscosity also increases. In this way, to a certain extent, during the laminating process, the laminating adhesive accumulated on the rubber roller produces a certain degree of adhesive tension on the printed sheet. This "pulling force" is just opposite to the "paper feed" direction of the laminated sheet. Then, at the moment of the laminating press sheet under high-speed conditions, due to the local adhesive force of the laminating adhesive on the rubber roller to the press sheet, the local tensile deformation of the laminating sheet is caused. This deformation mainly manifests on the paper surface Obvious unevenness, and even curling phenomenon, resulting in inaccurate trimming or die cutting specifications.