The TPU film production process is a systematic and complex process involving multiple steps and links. The following will introduce the production process of TPU film in detail.

Raw material preparation

The main raw material of TPU film is thermoplastic polyurethane (TPU) particles. Raw materials need to be inspected, screened and proportioned before production to ensure the quality and stability of the raw materials.

Melt preparation

Put the prepared TPU particles into the melt preparation equipment, add appropriate amounts of additives and color masterbatch, and melt the TPU particles into a melt under high temperature and high pressure. During this process, factors such as the temperature, pressure, and mixing speed of the melt need to be controlled to ensure the uniformity and stability of the melt.

Film extrusion

The melt is transported to the film extruder, and the melt is extruded into a TPU film through the extrusion and stretching of the extruder. During the extrusion process, parameters such as extrusion temperature, extrusion speed, and extrusion pressure need to be controlled to ensure the stability and consistency of film quality.

Cool and solidify

The extruded TPU film is cooled and solidified to transform it from a high temperature and high pressure state to a solid state at room temperature. During this process, parameters such as cooling speed, solidification time, and solidification temperature need to be controlled to ensure the physical properties and appearance quality of the film.

Test packaging

After cooling and solidification, the TPU film needs to be quality tested and packaged. The inspection includes testing of film thickness, width, length, transparency, tensile strength, tear strength and other indicators to ensure that the film meets product requirements. Packaging is to roll or cut the film into sheets of different specifications, and then package and label them.

The TPU film production process is a complex process that requires multiple steps such as raw material preparation, melt preparation, film extrusion, cooling and solidification, and testing and packaging. Each step requires strict control of various parameters and links to ensure the stability and consistency of film quality. Through continuous technological innovation and optimization, the TPU film production process is constantly improving and improving, providing a reliable guarantee for the production of higher quality TPU film products.