The Characteristics of Polyurethane Rollers

What are the performance characteristics and precautions of polyurethane rollers?

The polyurethane roller produced and processed is suitable for rolling, chemical industry, mining and other industries. It is wear-resistant and does not degumming, and has a long service life. The appearance is bright and shiny, the outer layer of the colloid is fine and smooth, and the colloid material and the mandrel are firmly bonded. The scale of the elastic body roller is strictly controlled, and the scale will not change greatly under different temperature and humidity conditions. It can adapt to the high temperature and high humidity environment of the rolling workshop in the south and the cold and dry climate in the north. The hardness target of polyurethane rollers is very wide, from HS15 to HS90, which can meet the hardness requirements of different types of rolling machines for rubber rollers.

The colloid used for polyurethane rollers contains enough outer layer viscosity to ensure that the rubber rollers include excellent printing paste transfer and inking functions during rolling, and its excellent inking functions can ensure high-quality rolling. Polyurethane rollers contain excellent chemical functions and are suitable for various types of printing pastes and rolling methods. It contains special resistance to solvent components in various printing pastes, fountain solutions and cleaning agents. Polyurethane rollers are also suitable for UV printing paste rubber rollers and glazing rollers, especially for boiling water, diesel, gasoline, lubricating oil, kerosene, toluene, alcohol and saline solutions. However, it is not resistant to ethyl acetate and strong acids and alkalis. Polyurethane elastomer rolls contain excellent physical properties. Elastomer rollers do not harden and age after long-term use, and contain excellent tear resistance, rebound performance, and abrasion resistance*. Therefore, the service life is long, the storage is simple, and long-term storage will not affect the application effect; it can accept the consumption environment of high pressure, high speed, high temperature and high humidity. Tests show that the tensile strength and wear resistance of polyurethane elastic body rollers are 3 times and 5 times that of natural elastic body rollers respectively; compaction ensures good deformation and rebound; the service life of polyurethane elastic body rollers is longer than that of ordinary elastic body rollers more than double.

Polyurethane rollers contain excellent hydrophilic properties and can be used as rubber rollers for water and alcohol fountain systems with good results. The urethane elastomer roll is easy to clean, resists switching between dark and light print pastes, and facilitates roll-on color change. Avoid contact with ethyl acetate, butyl acetate, butanone and other solvents as well as strong acids and alkalis during use. When installing elastomeric rollers, check the parallel position. The pressure is uniform between the elastomeric rollers and between the outer layer of the elastomeric rollers and the plate. When storing elastomeric rollers, use a dedicated elastomeric roller stand to ensure that the outer layer of the elastomeric roller is not stressed and does not come into contact with any other objects for a long time.

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