Maintenance Planning for Equipment Built Around a Kapton Heater
https://industrial-heat-source.dovetailscope.com/posts/glass-heater-applications-in-optical-and-display-equipment
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