Anti-mark films for press brake operations are typically made from high-strength plastic materials that are resistant to abrasion and impact. These materials may include polyurethane, polyethylene, polypropylene, or other high-performance plastics. The specific type of plastic used in the film may depend on the specific requirements of the application, such as the type of metal being bent, the required thickness of the film, and the amount of force that will be applied during the bending process. In general, anti-mark films should be chosen based on their ability to protect the surface of the workpiece from damage during the press brake process, while also being easy to apply and remove. It is important to carefully select an appropriate film for your specific application to ensure that it provides the necessary level of protection and performance.