The Main Characteristics of Printing Polyurethane Roller

The main characteristics of printing polyurethane roller

1. Polyurethane polyurethane roller colloid has sufficient surface viscosity. Therefore, the polyurethane roller has good ink transfer and ink holding performance during the printing process, and good ink affinity can ensure high-quality printing.

2. It has excellent physical properties, long-term use will not make the polyurethane roller hard and aging, and it has good tear resistance, rebound performance, and excellent wear resistance. Long service life, easy storage, long-term storage does not affect the use effect. Under the unbearable pressure of natural polyurethane rollers and synthetic polyurethane rollers, high-speed rotary machines, high-temperature, high-humidity production environments, it can still operate as usual without affecting it (the tensile strength and wear resistance of polyurethane polyurethane rollers are lower than those of natural rubber rubber. 3-5 times that of rollers. Compression permanent deformation, resilience and wear resistance are better than those of synthetic polyurethane rollers such as nitrile polyurethane rollers.

3. The high-grade polyurethane roller is bright in appearance, the surface of the colloid is fine and smooth, and the glue and the core are firmly bonded. The size of the polyurethane roller will not change greatly at different temperatures, and it can adapt to high temperature and high humidity environment or severe cold and dry climate.

4. The printing polyurethane roller has a good affinity for water: due to the special formula added to the polyurethane material, the internal structure of its molecule is changed, and the factor with good affinity for water is introduced and increased, which improves the water resistance of the material. Surface tension and surface water absorption, so used as dampening water, alcohol series polyurethane rollers, the effect is excellent.

5. Printing polyurethane rollers have excellent chemical properties and are suitable for various types of inks and printing methods. They are very suitable for varnish polyurethane rollers and UV ink polyurethane rollers. (Especially good solvent resistance to diesel, gasoline, dampening oil, kerosene, salt water solution, etc.)

6. The high-grade polyurethane roller is easy to clean. It is very easy to switch between dark and light inks in production. As the backing roller of some printing machines, it can stick to the miscellaneous characteristics such as paper wool, dust and anti-adhesive sheet powder spraying on the printing plate, and does not require frequent loading and unloading cleaning. , to facilitate production.

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