Film (calendering) molding is a processing method where thermoplastic resin is heated and melted, then continuously formed into thin sheets or films by passing it through multiple precise calender rolls. This method is characterized by high thickness precision and excellent surface smoothness, making it suitable for high-speed, mass production. Resins such as PVC, PE, PP, and ABS are primarily used, and the physical properties and dimensional accuracy of the product are adjusted by strictly controlling the temperature, speed, and spacing of the rolls. Its applications are wide-ranging, including food and medical packaging materials, building materials (flooring, wallpaper), agricultural sheets, electrical insulation materials, and synthetic leather substrates, and it can also be combined with multi-layering and surface treatments.