A Practical OEM Checklist for Specifying a Kapton Heater
https://precision-heater-hub.scriblorax.com/posts/mica-heater-temperature-control-and-sensor-integration-guide
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