What is Calendared Rubber?

Calendering is one of the important basic processes in polymer material processing, and it is also one of the important processing and forming methods for some polymer materials (such as rubber and thermoplastics) semi-finished products and finished products.

The thermoplastic that has been plasticized near the viscous flow temperature passes through a series of horizontal roller gaps that rotate toward each other, so that the material can withstand extrusion and extension, and become a thin sheet product with a certain thickness, width and smooth surface.

During the rolling process, the shearing force produced between the rollers causes the material to be squeezed and sheared multiple times, thereby increasing

The complete calendering process can be divided into two stages: feeding and calendering. The feeding stage is the preparation stage for calendering, which mainly includes several processes of material preparation, mixing, plasticizing, and feeding to the calender. Therefore, the calendering process is actually a complete continuous production line starting from raw materials and going through various polymer processing steps. The control of the calendering process is mainly to determine the calendering operating conditions, which include roll temperature, roll speed, speed ratio, stock quantity, roll pitch, etc., which are interrelated and restricted.