How Operating Conditions Influence Kapton Heater Design Choices
https://advanced-heat-elements.juniperbrief.com/posts/how-to-choose-a-mica-heating-plate-for-high-temperature-applications
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