Managing Heat Loss Around a Kapton Heater for More Stable Operation

https://industrial-thermal-lab.slatecurrent.com/posts/how-etched-foil-construction-works-in-a-mica-heater

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