Characteristics and precautions of polyurethane encapsulated rollers products

There are a wide range of rubber coating materials for rollers. Among them, polyurethane encapsulated rollers products are widely used in rubber coating products in various industries because of their obvious advantages, good wear-resistant effect, mute, oil resistance, hydrolysis resistance, weak acid and weak alkali resistance. Rubber roller, rubber wheel, no degumming, no sand hole, high strength and wear resistance. Casting polyurethane encapsulated rollers products are generally divided into polyester type, polyether type and polycaprolactone type.

Polyester encapsulated rollers products are mostly used in Cots with low and medium hardness. They have high physical and mechanical properties and good solvent resistance. They are commonly used in non-ferrous metal industry.

Polyether encapsulated rollers products are mostly used in Cots with high speed and high hardness. It has good water resistance, excellent low temperature resistance and good process performance. It is commonly used in the manufacture of wire drawing roller, printing roller, etc.

Polycaprolactone encapsulated rollers products have excellent comprehensive performance, low temperature resistance and hydrolysis resistance. They are commonly used as press rolls and cots with high requirements.

Polyurethane encapsulated rollers products have the advantages of wear resistance, corrosion resistance and good elasticity. They are suitable for supporting rollers of new materials such as glazing, oil passing, metallurgy and iron printing of imported equipment. Polyurethane encapsulated rollers are suitable for all kinds of machinery and have many superior characteristics.

1. The product has a wide range of hardness indicators, ranging from hsa15 to hsd95, which can meet the hardness requirements of different types of mechanical coated rollers.

2. The colloidal surface of the product is fine and smooth, the appearance color is bright, and the colloidal material is firmly bonded to the mandrel. The size of rollers is strictly controlled, and the size will not change greatly with temperature and humidity. It can adapt to the high temperature and humidity environment of workshops in the South and the cold and dry climate conditions in the north.

3. Encapsulated rollers products have good chemical properties and are suitable for various types of inks and printing methods. It has special resistance to solvent components in various inks, fountain solutions and cleaning agents. Polyurethane encapsulated rollers are also suitable for UV ink cots and polishing cots, especially for boiling water, diesel, gasoline, lubricating oil, kerosene, toluene, alcohol and brine solutions. But it is not resistant to acetone, ethyl acetate and strong acid and alkali.

4. The colloid used for polyurethane encapsulated rollers has sufficient surface viscosity, which can ensure that the rollers have good ink transfer and inking performance in the printing process, and its good ink affinity can ensure high-quality printing.

5. Polyurethane encapsulated rollers products have excellent physical properties. The rollers will not harden and age after long-term use, and have good tear resistance, resilience and excellent wear resistance. Therefore, they have long service life and are easy to store. Long term storage will not affect the use effect; It can withstand the production environment of high pressure, high speed, high temperature and high humidity. The results show that the tensile strength and wear resistance of polyurethane encapsulated rollers are 3 and 5 times higher than those of natural rubber rollers; Good compression set and resilience; The service life of polyurethane rollers is more than twice that of ordinary rollers.

6. Polyurethane encapsulated rollers products are easy to clean, easy to convert dark and light ink, and convenient for printing and color change.

7. Polyurethane encapsulated rollers have excellent hydrophilicity, so they can be used as rollers for water and alcohol fountain system with good effect.

Precautions for use of encapsulated rollers products

1. Avoid contact with solvents such as ethyl acetate, butyl acetate, acetone and butanone, as well as strong acids and bases.

2. When installing the encapsulated rollers products, it shall be aligned to the parallel position. The pressure between the rubber rollers and between the rubber roller surface and the layout must be uniform.

3. When storing the products wrapped with encapsulated rollers, a special rubber roller frame must be used to ensure that the rubber roller surface is not under pressure and does not contact any other objects for a long time.

4. After shutdown every day, the paper wool and ink residue on the surface of the cot must be cleaned with cleaning solution.