How Thermal Mass Changes the Behavior of a Polyimide Heater

https://industrial-heater-world.birchreport.com/posts/how-temperature-sensors-work-with-a-silicone-heater

In precision electronics, a polyimide heater must deliver heat in a controlled way. It uses a patterned resistive foil circuit insulated by polyimide film. One useful trait is custom shapes. Still, excess watt density can change the result