Welcome To Signs101.com: Largest Forum for Signmaking Professionals

Signs101.com: Largest Forum for Signmaking Professionals is the LARGEST online community & discussion forum for professional sign-makers and graphic designers.

 


  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Cold laminating is causing a sea of dimples

Discussion in 'General Signmaking Topics' started by D3D, Oct 27, 2020.

  1. D3D

    D3D Member

    51
    5
    8
    Aug 25, 2016
    Detroit
    I have a glossy, thin (.033") printed PETG sheets that I need to mount to a 3mm-3/16" substrate. The laminator is running fine and the technician is skilled but we are getting a relatively uniform wavy pattern across the surface of the print. We typically mount to rigid plastics, in this case we have mounted to 3mm Sintra and a 3/16" foam core and gotten the same problems, we even tried using an optically clear adhesive which I know is very even in its adhesive thickness. Are these substrates just too uneven to mount shiny, thin plastic too? Its not necessarily unattractive but certainly wasn't expected. See my photos, one is mounted and the other is not.

    2 mounted.jpg 1 unmounted.jpg
     
    Tags:
  2. FactorDesign

    FactorDesign Member

    97
    22
    8
    Feb 1, 2018
    Raleigh, NC
    I'm not sure if this applies to your own use case, but we've had problems with mounting blockout graphics 2nd surface on acrylic sheets that weren't perfectly flat, so we had to use a dense foam pad around 3/4" thick as a sled under the acrylic to help make up for the uneven pressure due to the irregular surface. This usually works but not always, depending on how bad the surface is. I've never seen it exactly like your picture, but we are also using a different process.
     
    • Like Like x 1
  3. JBurton

    JBurton Signtologist

    1,898
    380
    83
    Sep 28, 2017
    Arkansas
    If you really want to get this to work out with a foam type core, you may look into Ultraboard products. I think they have a more robust face stock, maybe 10 mils thick of some sort of plastic, that may actually be flat, though I'm not sure they go down to 1/8". Though now that I think about it, doesn't sintra have a rigid face material?
     
    • Like Like x 1
  4. KatePhillips

    KatePhillips Member

    141
    39
    28
    Jan 22, 2019
    Halifax NS
    I hate foamboard so much. We generally try and encourage people to go PVC/sintra.

    Uh sorry, are you applying vinyl to substrate with the laminator, or laminating that's causing the issue? I think I misunderstand
     
  5. D3D

    D3D Member

    51
    5
    8
    Aug 25, 2016
    Detroit
    Ultraboard did not work in our case. The solution is something super rigid and flat like acrylic or dibond
     
  6. JBurton

    JBurton Signtologist

    1,898
    380
    83
    Sep 28, 2017
    Arkansas
    Ah, what's the end application for this?
    Or is this even a problem, just an application that didn't work and a curiosity of other's experiences?
     
  7. D3D

    D3D Member

    51
    5
    8
    Aug 25, 2016
    Detroit
    End application is hanging signage. We ended up settling on foam core that was mounted with the most minimal amount of pressure, it didn't solve the problem but it is better than what we were seeing with the Sintra. Surprisingly we also mounted the artwork to coroplast after the fact and it was much better than either foam or sintra, which left me scratching my head.
     
  8. JBurton

    JBurton Signtologist

    1,898
    380
    83
    Sep 28, 2017
    Arkansas
    I'd reckon the coro has a bit more consistency, since it's extruded with flutes? Whereas the foams are reliant on the consistency of the foam making up the core?
    I'd be curious how PVC would perform. It seems to be mighty consistent in it's thickness and density, I use it for a spoilboard on my router.
     
Loading...

Share This Page

 


Loading...