What are the production processes of TPU film?

The production process of TPU film mainly includes the following steps:

1. Raw material preparation: First, high-purity TPU (thermoplastic polyurethane) particles need to be prepared, which are the basic raw materials for the production of TPU film.

2. Melt extrusion: Melt the TPU particles at high temperature to make them liquid for the next step of processing.

3. Calendering: The melted TPU is rolled through a calender to form a film with a certain thickness and width.

4. Cooling and shaping: The calendered TPU film needs to be quickly cooled by cooling rollers to fix its shape and size.

5. Surface treatment: In order to improve the adhesion and surface properties of the film, special treatment may be required on the surface of the film, such as corona treatment or coating treatment.

6. Slitting and rolling: The cooled TPU film will be cut into different sizes as needed and rolled up to facilitate subsequent packaging and use.

7. Quality testing: During the production process, strict quality testing is required at each step to ensure that the physical and chemical properties of the film meet standards.

8. Packaging and storage: Qualified TPU film will be packaged and properly stored for subsequent transportation and sales.

During the entire production process, the control of temperature, pressure and speed is crucial. These factors directly affect the quality and performance of TPU film. In addition, environmental protection and energy saving are also factors that are increasingly valued in modern TPU film production. By continuously optimizing the production process, production efficiency can be improved and costs reduced, while ensuring high performance and environmental protection of the product.