The Characteristics of Polyurethane Roller

The characteristics of polyurethane roller.

1. It has good hydrophilicity, so it can be used as a water and alcohol dampening system to use polyurethane rollers.

2. High strength, tear resistance, shear resistance and abrasion resistance.

3. From HSA15 to HSD80, it can meet the hardness requirements of different types of printing machines for rollers.

4. Polyurethane rollers have sufficient surface viscosity to ensure that the rollers have good ink transfer performance during the printing process, and their good ink affinity can ensure high-quality printing.

5. The appearance of the polyurethane roller is bright, the surface of the colloid is fine and smooth, and the colloid material and the mandrel are firmly bonded. The size of the roller is strictly controlled, and there will be no great changes under different temperature and humidity conditions. It can adapt to various environments, humidity and temperature environments, high temperature, high humidity or cold and dry climate conditions, and can adapt to high temperature and high humidity environments and severe cold and dry climate conditions.

6. Polyurethane rollers have good chemical properties and are suitable for various types of inks and printing methods. Solvent components in various inks, fountain solutions, and cleaning agents have special resistance. Especially boiling water, diesel oil, gasoline, lubricating oil, kerosene, toluene, alcohol and salt solution have good solvent resistance. But it is not resistant to acetone, ethyl acetate and strong acid and alkali.

7. With excellent physical properties, polyurethane rollers will not harden or age after long-term use, have good tear resistance, rebound performance, good wear resistance, long service life, convenient storage, and long-term storage will not affect the use effect; Withstand high pressure, high speed, high humidity production environment. Experiments show that the tensile strength and wear resistance of polyurethane rollers are 3 times and 5 times that of natural rollers; the compression set and resilience are good; the service life of polyurethane rollers is more than 3 times that of ordinary rollers.

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