Rubber rollers are used for processing hot adhesive products because they are resistant to high temperatures, ozone, chemical inertness, and non stick to plastics. What are its chemical properties? Here is the editor's summary:
1. Corrosion resistance: mainly for printing, various chemicals that are frequently in contact with, such as ink, paper, dampening solution, cleaning agents, etc., which contain some corrosive substances. Therefore, rubber rollers should have a certain degree of corrosion resistance.
2. Conductivity: During single sheet printing, ink and other materials can easily generate static electricity under inappropriate conditions, which may cause the ink to wrap around the drum and transport two sheets of paper. Therefore, in order to ensure the normal transportation of paper and ink, it is necessary for rubber rollers to have anti-static properties. However, the electrostatic embossing rollers of gravure printing machines need to carry a certain amount of charge under certain conditions.
3. Thermal conductivity: Any material has an upper limit for high temperature resistance. The high temperature resistance of the material directly determines the lifespan of the rubber roller. Especially for high-speed newspaper rotary printing machines and commercial rotary printing machines, whose rotational speed has reached 60000 revolutions per minute, high-speed operation will inevitably generate high heat. Therefore, it is required that the rubber rollers of the printing machine have good heat transfer to ensure their normal service life and printing quality.
4. Correctness of water transfer: The water roller should have hydrophilicity and ink repellency. A good water roller should be able to evenly spread water or dampening solution on the surface of the rubber roller and maintain a certain amount of moisture on the surface. At the same time, the water roller used to transport alcohol dampening solution needs to be transported quickly, and its accuracy is crucial for maintaining ink balance.
5. Ability to cooperate with chemical solvents: The coordination between the surface material of rubber rollers and the chemical composition of cleaning agents, ink, and dampening solution will hinder the development of their respective functions.
The use of rubber rollers provides a lot of assistance for production and processing, and it is used in the cotton spinning industry for drawing, roving, and fine yarn machines. I hope the above content is helpful to you.
Editor: Nancy
