From Prototype to Production: Scaling a Custom Kapton Heater Project

https://precision-heating-elements.rivetgarden.com/posts/how-temperature-sensors-work-with-a-silicone-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