The purpose of calendering is to produce products by continuous calendering before processing into final products. The calender uses multiple rolls (three or four rolls) to compress soft or semi-liquid raw materials into uniformly thick sheets of material. This process is a variable speed process, depending on the specific standards of the product.
The main advantage of the calender is the production of long and continuous sheets of uniform thickness. The sheet can be implemented as a carrier fabric or laminated to a film or other device.
The five benefits of the calendering process are as follows:
1. Calendering can produce products at a speed of three meters per minute.
2. Most compounds will benefit from the freshness of the mill before calendering.
3. The product can be coated on the fabric.
4. Silicone rubber is usually calendered at room temperature.
5. The process can be supported or not.
Production challenges of calendering methods
1. It is important to heat the rollers to prevent blocking.
2. Overheating process may cause the product to burn.
3. The choice of roller speed helps to expel the air from the product.
4. Due to insufficient viscosity, transfer to the fabric may produce undesirable or intermittent results.
5. When using a release liner, please peel off the paper under warm conditions to prevent tearing or sticking.
6. Creep of the product is a problem.