About Polyurethane Rollers

First, the application of polyurethane rollers

1. General new polyurethane rollers internal structure is not stable, if immediately put into use, will reduce the service life. Therefore, polyurethane rollers should be placed in the outside world for a period of time to maintain relative stability, which can increase the toughness of the colloid, so as to improve the durable effect.

2. Polyurethane rollers have the advantages of high strength, high tear resistance, etc. Able to withstand high pressure, high humidity production environment. But pay special attention to its storage. The general method is, after cleaning, with plastic film to seal the colloid, on the idle polyurethane rubber roller frame, must not litter, or pressure, keep the roller core is not deflecting, not bending, to ensure the normal use of the roller core.

3. Therefore, as long as we pay attention to some storage problems, we can extend the service life of polyurethane rollers.

Two, the use of polyurethane rollers

1. The appearance of bright color, colloidal surface is fine and smooth, colloidal material and mandrel bonding firmly. Roller size is strictly controlled

System, size under different temperature and humidity conditions, there will be no great change. It can adapt to the high temperature and high humidity environment of the southern printing shop and the cold and dry climate conditions of the north.

2. The hardness index of polyurethane rollers is broad, from HSA15 to HSD80, which can meet the requirements of different types of printing presses on rollers hardness.

3. Polyurethane rollers with colloid has enough surface viscosity, can ensure that rollers in the printing process has good ink transfer and inking performance, its good inophilic performance can ensure high quality printing.

4. Polyurethane rollers have good chemical properties, especially good solvent resistance to diesel, gasoline, lubricating oil, kerosene, alcohol and brine solutions.

5. Polyurethane rollers have excellent physical properties, long-term use of rollers will not harden, aging, tear resistance, good resilience, wear resistance, so long service life, easy to save, long-term storage does not affect the use effect; Able to withstand high pressure, high speed, high humidity production environment. The results show that the tensile strength and wear resistance of polyurethane rollers are 3 times and 5 times that of natural rubber rollers. Good compression deformation and resilience; The service life of polyurethane rollers is more than 3 times that of ordinary rollers.

6. Polyurethane rollers have excellent hydrophilicity, so can be used as water, alcohol embellish system rollers.

7. Polyurethane rollers have high strength, high tear resistance, so shear resistance, wear resistance.

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