How Thermal Mass Changes the Behavior of a Kapton Heater

https://advanced-heating-guide.halcyonledger.com/posts/how-to-choose-heater-materials-for-semiconductor-processing-equipment

In precision instruments, a kapton heater must deliver heat in a controlled way. It uses a resistive foil circuit laminated within polyimide film. One useful trait is custom circuit patterns. Still, hot spots can change the result