Choosing the appropriate manufacturing method for your molded product requires detailed investigation prior to selection. There are many ways to make it. Here, I mainly introduce the calendering process to you. Friends who are interested should come and learn about it.
Calendering
The purpose of calendering is to produce products by continuous calendering before processing into the final product. Calenders use multiple rollers (three or four) to compress soft or semi-liquid raw materials into uniformly thick sheets of material. The process is a variable speed one, depending on the specific criteria of the product.
The main advantage of calenders is the production of long, continuous sheets of uniform thickness. The sheet may be embodied 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 mill being fresh before calendering.
3. The product can be coated on fabrics.
4. Silicone rubber is usually calendered at room temperature.
5. Can support or not support the process.
Production Challenges of Calendering Methods
1. It is important to heat the rollers to prevent sticking.
2. Overheating the process may cause the product to burn.
3. The selection of roller speed helps to remove air from the product.
4. Transfer to fabric may produce poor or intermittent results due to insufficient tack.
5. When using a release liner, peel off the paper while warm to prevent tearing or sticking.
6. Product creep is a problem.
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