Causes and Solutions of Injection Molding Defects of TPU Products During the injection molding of thermoplastic polyurethane (TPU), the dried and preheated TPU granules are transported from the hopper of the injection molding machine to the heated barrel. When they are in the molten state, they are injected into the closed mold with relatively low … Continue reading Common Problems and Countermeasures of TPU Injection Molding Products