Polyester film is a widely used electrical insulation material.

Mylar is the polyester film brand from DuPont, which is manufactured with different surfaces and in different thicknesses.

Polyester film can be printed with the laser printer.

We have polyester film in thicknesses from 0.012 to 0.5 mm. We also supply laminates made of polyester film, which then reach thicknesses of 0.8, 1.0, 1.2 and 1.5 mm.

Polyester foils can be cut with the laser. However, there may be traces of smoke on the cut edges.

The polyester film is largely insensitive to climatic influences.

We recommend storing the film within the shipping packaging until it is used. A dry, dust-free storage room with an ambient temperature below 30 ° C is advantageous.

Avoid exposure to harmful influences such as moisture or direct sunlight through prolonged storage in the open air. The film should be brought in the transport packaging to the processing area or a similarly air-conditioned room at least 24 hours before processing.

We recommend removing the film from the packaging immediately before processing. After removal, transport using a steel skewer prevents deformation or damage to the outer layers of the film.

We are not aware of any restrictions on the shelf life of polyester film. Nevertheless, we recommend using the film within a year.

Polyester film is not resistant to: nitric acid 65% and 100%, nitrobenzine, phenol ammonium hydroxide and sodium hydroxide

According to DIN 53372, polyester film has a cold resistance of -196 ° C.


PEN film was originally developed for high-quality flexible printed circuits and is now widely used as an aroma barrier in PET plastic bottles. In the electrical industry, PEN (polyether naphthalate) is particularly characterized by its higher temperature resistance compared to polyester (155 ° C permanent temperature instead of 130 ° C).
Teonex® is also superior to classic polyester films (Mylar®, Hostaphan®) in aging tests under difficult conditions (dirt, moisture), as it is more resistant to hydrolysis and more diffusion-proof.
In terms of processing, there is no difference between polyester films and PEN films.