Performance characteristics of polyurethane rubber rollers:
Polyurethane rubber rollers are suitable for various printing machinery and have many superior characteristics.
1. The appearance is bright in color, the colloidal surface is fine and smooth, and the colloidal material is firmly adhered to the core shaft. The size of the rubber roller is strictly controlled, and there will not be significant changes in size under different temperature and humidity conditions. Capable of adapting to the high temperature and high humidity environment of printing workshops in the south and the cold and dry climate conditions in the north.
2. The hardness index of polyurethane rubber rollers is broad, ranging from HSA 15 to HSD80, which can meet the requirements of different types of printing machines for rubber roller hardness.
3. The colloid used for polyurethane rubber rollers has sufficient surface viscosity to ensure good ink transfer and ink application performance during the printing process. Its good ink affinity can ensure high-quality printing.
4. Polyurethane rubber rollers have good chemical properties and are suitable for various types of inks and printing methods. Has special resistance to solvent components in various inks, lubricants, and cleaning agents. Polyurethane rubber rollers are also suitable for UV ink rubber rollers and varnish rubber rollers, especially for boiling water, diesel, gasoline, lubricating oil, kerosene, toluene, alcohol, and saltwater solutions, which have good solvent resistance. But it is not resistant to acetone, ethyl acetate, and strong acids and bases.
5. Polyurethane rubber rollers have good physical properties, and long-term use of the rollers will not harden or age. They also have good tear resistance, rebound performance, and wear resistance, so they have a long service life and are easy to store. Long term storage does not affect the effectiveness of use; Capable of withstanding production environments with high pressure, high speed, high temperature, and high humidity. Experiments have shown that the tensile strength and wear resistance of polyurethane rubber rollers are 3 and 5 times that of natural rubber rollers; Compression without deformation and good resilience; The service life of polyurethane rubber rollers is more than twice that of general rubber rollers.
6. Polyurethane rubber rollers have excellent hydrophilicity, so they can be used as rubber rollers for water and alcohol lubrication systems, and the effect is very good.
7. Polyurethane rubber rollers are easy to clean and facilitate the conversion of dark and light ink, making it convenient for printing color changes.
Precautions for use:
1. During use, avoid contact with solvents such as ethyl acetate, butyl acetate, acetone, butanone, as well as strong acids and bases.
When installing the rubber roller, it should be aligned to a parallel position, and the pressure between the rubber rollers and between the surface of the rubber roller and the plate should be uniform.
When storing the rubber roller, a dedicated rubber roller holder must be used to ensure that the surface of the rubber roller is not under pressure and does not come into contact with any other objects for a long time.
4. Clean the paper bristles and ink residue on the surface of the rubber roller with cleaning solution after stopping the machine every day