Polyimide film is used to coat heated 3D printing build plates. Designed at a thicker 3 mil / 0.07 mm with easy release backing that leaves no residue on the build plate. Pre-cut rectangular sheets available to fit a variety of 3D printer models. Typically used when printing with higher temperature plastics such as, PETG, HIPS, and ABS.
Polyimide film produces the best results when applied to the print bed using a similar process as applying a screen protector. The end result should have almost no air bubbles between the tape and print bed.