Planning a Kapton Heater Project From Requirements to Final Testing

https://electric-heat-insights.solsticebrief.com/posts/how-etched-foil-technology-is-used-in-a-kapton-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