Chemical Reaction Process
TPU is used in countless applications: technical components, housings for electrical devices, decorative trim parts for cars, sneaker soles, ski boots, housings for external car mirrors and many more.
Thanks to its modular design, the ZSK twin screw extruder is ideally suited to producing TPU. The chemical reaction process that turns the liquid raw materials into polyurethane takes place during constant mixing and kneading. In order to achieve the longest possible residence time in the extruder, Coperion has already designed ZSK extruders with process lengths of up to L/D = 68.
Thanks to the self-wiping profile of the ZSK twin screw extruder and the narrow residence time distribution, high product quality can also be guaranteed with long machine runtimes.