Calendering is a specialty process for the manufacture of large-volume and high-quality products, mainly vinyl (PVC) film and sheet. Modified PE, PP, ABS, and other thermoplastics can also be calendered. An important area in the calendering of film is the ability of surface treatment, such as embossing films or enhancing the physical properties of the films by stretching.

In the calendering process, the polymer is melted and compounded with heat and pressure in an extruder/kneader. Then, the film is formed by the pressure of the calendering rolls.  Special features of the film are defined by formulation and processing conditions.

Type of equipment

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