How Operating Conditions Influence Kapton Heater Design Choices
https://polyimide-heater-guide.wordcanopy.com/posts/polyimide-heater-installation-guide-for-flat-and-curved-surfaces
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