What are the manufacturing processes of corona rollers?
The corona roller is a special roller, which is usually made of metal or plastic, and its surface is covered with a layer of polymer materials, such as polytetrafluoroethylene (PTFE), polyimide (PI), etc. The function of the corona roller is to generate corona discharge on the surface of plastic films or papers to increase their surface tension and wettability, thereby improving their printing and coating effects.
The manufacturing process of corona rollers usually includes the following steps: first, process the metal or plastic material into the required shape and size; then, cover the surface with a layer of polymer material, such as PTFE, PI, etc.; finally, conduct electrolysis Halo rollers are machined and treated to ensure smoothness and uniformity of their surfaces.
The advantages of corona rollers are very obvious. First, it can generate corona discharge on the surface of plastic films or papers, thereby increasing their surface tension and wettability, thus improving their printing and coating effects. Secondly, the surface of the corona roller is covered with a layer of polymer material, which can avoid the adhesion and contamination of ink or paint, thus improving the quality of printing and coating. In addition, the manufacturing process of corona rollers is relatively simple and the cost is relatively low, and it can be widely used in various printing and coating equipment.
While a corona roller has many advantages, it also has some disadvantages. First of all, the surface of the corona roller is covered with a layer of polymer material, which is easy to wear and damage and needs to be replaced regularly. Secondly, the use of corona rollers requires certain skills and experience to avoid the problem of uneven corona discharge. In addition, the use of corona rollers also requires attention to safety issues to avoid accidents such as electric shock and fire.
In general, the corona roller is a very important printing and coating equipment, which can increase the surface tension and wettability of plastic films or papers, thereby improving their printing and coating effects. When selecting and using a corona roller, factors such as its material, surface covering, surface treatment and processing technology, size and shape need to be considered to ensure the uniformity and safety of corona discharge.
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