A car interior parts manufacturer was struggling with problems with cold-runner injection molds. Their products suffered from defects such as shrinkage marks, short shots, and uneven wall thickness, all stemming from “low-temperature dead zones” in the runner system, where the temperature is 15-20 degrees Fahrenheit below the set value. Their traditional on/off mold temperature controllers… Continue reading Guide to PID control Mold temperature controller: Fix Low-Temperature Dead Zones in Cold Runner Injection Molding