Common Failure Causes in Polyimide Heater and How to Prevent Them

https://heater-engineering.novacrestiq.com/posts/temperature-control-for-a-kapton-heater-sensors-setpoints-and-stability

Many heating problems look like a power problem at first. In practice, the cause may be contact, heat loss, sensor position, or poor fit. A polyimide heater works best when these parts are planned together