Three roll calender is an important equipment in the field of plastic sheet production.
It is usually composed of three parallel rollers, and the pressure and friction between the rollers are applied to the passing plastic sheet.
Three roll calender features include:
1. Efficient calender: It can quickly make the surface of plastic sheet smooth and smooth, improve its appearance quality.
2. Precise control: The precise control of calender effect can be achieved by adjusting parameters such as the distance between rollers, temperature and pressure.
3, uniform cooling: help plastic sheet uniform cooling, reduce internal stress, improve product performance stability.
The working principle is: After the plastic sheet is extruded by the extruder, it enters between the rollers of the three-roll calender. The speed and temperature of the upper, middle and lower rollers can be set as required. In general, the speed of the middle roller is faster, and the speed of the upper and lower rollers is relatively slow, thus forming a certain speed difference and pressure, and stretching and calendering the sheet. At the same time, there is usually a cooling medium inside the roller, such as cooling water, to achieve the cooling of the sheet.
Three roll calender has a wide range of applications in the following fields:
1. Plastic products industry: such as the production of PVC sheet, PP sheet, etc.
2. Rubber products industry: the rubber sheet is calender treatment to improve its surface quality.
For example, in the production of PVC sheet, the three-roll calender can make the surface of the sheet achieve high finish, meeting the requirements of architectural decoration, furniture manufacturing and other industries for the appearance of the sheet.
When choosing a three-roll calender, the following factors need to be considered:
1. Roller material: high-quality material can ensure long-term stable operation and good calender effect.
2. Control accuracy: The high-precision control system can better meet the strict requirements of the production of calender parameters.
3. Equipment stability and maintenance convenience: reduce the occurrence of failures and reduce maintenance costs.
In short, the three-roll calender plays a key role in the production process of plastics and rubber products, which is of great significance for improving product quality and production efficiency.
