Finally, I've found the print surface I can print POM onto =)))))
This is an old LCD panel from a laptop. I ripped off the polarizer film (acetone helps doing it). The layer of glue that remained after peeling off the film is the surface I printed on.
And yes, I am holding the panel by the POM printout I just printed! It's well and truly stuck!!
Unfortunately for the project, high voltage has nothing to do about this success.
print bed T = 130 deg.C (temperature of the surface - setpoint was 150 deg.C)
extruder T = 250C (1st layer) / 220 deg.C (the rest)