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Vutek qs3220 suction / print lines

homerunmedia

New member
We have a Vutek QS3220 and we are printing color + white ink on a 60” clear PET window film.

We previously ran these with no problem, but all of sudden are encountering what looks like a "suction / print line" about every 10”. Since then, we have printed on canvas, regular adhesive back vinyl, and even 3/16" clear acrylic - all prints came out fine so we believe the issue lies with the suction since the PET film is so thin.

We have tried the following,
  • Printing on both left and right side of the flatbed
  • Reducing the heat / vacuum levels
  • Hooking the film onto both tension rolls (Previously when the prints came out correct, we had 100% suction and they were not hooked on the tension lines, it was fed by a table roller)

Any tips or advise would be appreciated.
 

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