The process of manufacturing films involves calendering resins. Calendering is a process used for manufacturing high-quality and large-volume products, mainly vinyl (PVC) sheets and films. Other thermoplastics can also be calendered for the manufacturing of films and sheets. In the calendering process, the polymer is melted and compounded with heat and pressure in an extruder. Then, the film is formed by the pressure of the calendering rolls. Special features of the film are defined by ... Read more