High-grade printing roller features

The rubber roller is an important accessory on the printing press and has an important influence on the quality of the printed product. Cots have different roles in different types of printing machines. How to choose high quality and high performance printing rollers is of great significance for improving printing production efficiency, satisfying customers' various production requirements and ensuring the quality of printing. With China's accession to the "WTO", the overall level of the people has increased, and the requirements for printing quality have also been continuously improved. The number of high-end and high-speed printing presses has also been increasing, and the quality of the printing roller required by the market and the printing press has become higher and higher. . It can be said that high-grade printing roller with high-grade printing machinery can have good printing products.

At present, many kinds of rubber rollers are used in Chinese printing factories. The more common ones are natural rubber rollers and synthetic rubber rollers. The polymer roller with good performance is gradually accepted by companies with high quality printing presses, and will be widely used in the future. Printing manufacturers are widely used. Among them, polyurethane rollers are widely used in the international printing industry, and they have gradually replaced rubber rollers (such as Dingqing roller).

Polyurethane rollers used in high-end printing machines should have the following characteristics:

1. The color appearance of the rubber roller is bright, the surface of the colloid is delicate and smooth, and the adhesive and the core adhere firmly. The size of the rubber roller will not change much under different temperatures, and it can adapt to the high temperature and high humidity environment or the cold and dry climate conditions.

2. Polyurethane rubber roller colloids have sufficient surface viscosity. Therefore, the rubber roller has good ink-transfer properties and ink performance in the printing process, and good ink-receptive performance can ensure high-quality printing.

Three. Has excellent chemical properties, suitable for all types of inks and printing methods, very suitable for UV type ink roller and polishing oil roller and so on. (especially good solvent resistance for diesel, gasoline, dampening oil, kerosene, brine solution, etc.)

4. With excellent physical properties, long-term use will not make the roller hardened and aged, but also have good tear resistance, good resilience, and excellent wear resistance. Long life, easy to save, long-term storage does not affect the use of results. In natural rubber rubber rollers and synthetic rubber rollers and other unbearable pressure, high-speed rotary machines, high temperature, high humidity production environment can still operate without affecting (PU rubber roller's tensile strength, wear resistance is natural rubber 3 times to 5 times of the roll, the compression set, the elasticity and wear resistance are better than those of the synthetic rubber roll (such as Dingqing roll).

5. The roller is easy to clean. In the production of very easy to carry out the conversion of dark and light color ink. As some printing press roll, it can stick to the printing plate on the paper, dust and anti-adhesive dusting and other miscellaneous characteristics, does not require frequent loading and unloading cleaning , Convenience to production.

6. Because of the special formula added in the polyurethane material, the internal structure of the molecule is changed, and the extremely strong gene with good affinity for water is introduced and increased, thereby increasing the surface tension and surface water absorption of the material against water. So the water used for dampening, alcohol roller series, excellent results.