Injection Molding Techniques for TPE and TPR Injection Molding Techniques for TPE and TPR 1. Dry the TPE and TPR material before injection molding It must be dried before injection molding. Generally, use hopper drying at 7080℃/2h or tray drying at 80100℃/1h. For tray drying, pay attention to keeping the material layer thickness generally not … Read more