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printing on removable clear and after 80" completely tunnels!!

Discussion in 'Digital Printing' started by gabagoo, Jul 14, 2011.

  1. gabagoo

    gabagoo Major Contributor

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    I can understand how this happens considering it is a removable adhesive but it is designed to be printed on and I dropped my heat to 35 / 30 which is about the lowest I would go.

    After about 80" the tunneling starts and it still was printing ok and i figured ok I can use a soft squeegee and get it back down.

    Then I could see the tunneleing was happening behind the pinch rollers and getting worse to the point where the heads near the end of the print started hitting the vinyl.

    ugggg...why sell a product if it does not work?

    Look at this pic and tell me this is not complete product failure.
     

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  2. ChicagoGraphics

    ChicagoGraphics Major Contributor

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    It can be many things, try turning off your heaters, how warm is it in your work area?
     
  3. Flame

    Flame Major Contributor

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    Had that happen test printing some cheappppp china stuff. I'd say poor quality material?
     
  4. gabagoo

    gabagoo Major Contributor

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    This product is American made and generally good stuff. I knew I would have an issue when I loaded it into the printer, before the heat was even on a tunnel formed. I figure the adhesive is not strong enough to hold onto the silicone paper.

    Cant see printing with no heat and guaranteeing the finished print
     
  5. Flame

    Flame Major Contributor

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    Try turning on the back 2 heaters, but keeping the final postheater? Just an idea, it seemed to help.
     
  6. Rydaddy

    Rydaddy Member

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    I have never seen anything like that. How the....? I bet even with all the heaters off it will still buckle. In general I find clear more difficult to print on. I have a roll of cheap, cheap, cheap matte intermediate from Grimco that channels badly. Not as bad as what you showed us, but bad. It just sits behind the printer now taking up space while I print on IJ35.
     
  7. Mike Paul

    Mike Paul Major Contributor

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    What are you printing on?
     
  8. gabagoo

    gabagoo Major Contributor

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    Mimaki is the printer, but the tunnels can form behind the pinch rollers and then thats real bad as the rollers basically pinch the vinyl off the backing paper. I think it is a defective roll at this pointcause I have used this product before and had no problems
     
  9. bayshorecreations

    bayshorecreations Very Active Member

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    Turn off the heaters and that should solve the problem. Just make sure to give the ink extra time to dry.
     
  10. Custom_Grafx

    Custom_Grafx Very Active Member

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    If you have used it before, and it didn't do that... either you are doing something different, or the environment is different, or you have a bad batch or something... I would also ask my supplier/rep.
     
  11. Sticky Signs

    Sticky Signs Very Active Member

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    not sure how your mimaki holds/dispenses the media or where the heaters are but I would guess that using media flanges would solve (or at least help the issue).
     
  12. miker

    miker Member

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    my first reaction is that is is an old roll of material or defective
     
  13. rushworks graphics

    rushworks graphics Very Active Member

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    we get tunneling when we print on perf, we just turn off the heaters and that solves the problem, then we let "air dry" for 24 hrs.
     
  14. petesign

    petesign Very Active Member

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    I was also thinking heat. What are your heaters set on for the user profile you are printing on?
     
  15. MikePro

    MikePro Major Contributor

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    did you try only printing 79.875" tiles?
     
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