Particularly important for the evaluation of the temperature on the mold surface is the knowledge about the temperature on the cavity wall.
This temperature is called cavity wall temperature.
During continous production, the cavity wall temperature is higher than the mold temperature.
The reason for this is that the hot melt is in direct contact with the cavity wall during the injection time and heats up the cavity wall. The temperature fluctuates during a cycle due to heating (injection phase) and cooling (cooling time).
The cavity wall temperature can be determined by special sensors mounted within the cavity wall.