A Practical Guide to Planning Polyimide Heater Requirements
https://smart-heaters.rivetgarden.com/posts/installing-a-ito-glass-heater-practical-steps-for-better-heat-transfer
A polyimide heater can solve a simple problem: place useful heat close to a part that needs it. The best result comes from a clear plan. Shape, power, contact, and control all affect the final behavior