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Iso propyl alcohol & adhesion

Discussion in 'Flatbed Printers' started by arvindrlaxman, Jul 22, 2014.

  1. arvindrlaxman

    arvindrlaxman Member

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    Does IPA provide better adhesion when printing on glass or any other substrate ?
     
  2. Billct2

    Billct2 Major Contributor

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    No
     
  3. eahicks

    eahicks Very Active Member

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    It certainly does, if the substrate is initially covered in dirt.
     
  4. Billct2

    Billct2 Major Contributor

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    my mistake, I thought they were takling about using it as an application fluid, but it's about printing not vinyl
    As a prep fluid it's great.
    But whether it promotes adheaion I wouldn't think it is any better than anything else that gets the surface clean.
     
    Last edited: Jul 22, 2014
  5. GVP

    GVP Active Member

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    Just for a second, I thought... :)
     

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  6. signpost-boston

    signpost-boston Making America great, one sign at a time.

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    Ipa

    does anybody else notice the graphics are "falling off windows" when you are pre masking?
    (while we are on the subject of windows...)

    -mosher

    p.s.
    nope
     
  7. eahicks

    eahicks Very Active Member

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    I stand by my answer, as I think he was talking about cleaning his substrates.
     
  8. arvindrlaxman

    arvindrlaxman Member

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  9. Billct2

    Billct2 Major Contributor

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    I think you will see an improvement, not becaase alcohol improves the adhesion, but because ink sticks better to a cleaner surface
     
  10. arvindrlaxman

    arvindrlaxman Member

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    Jun 30, 2014

    Hopefully we do..
     
  11. player

    player Major Contributor

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    Use 99% isopropyl.
     
  12. jgaskin

    jgaskin New Member

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    I'm with player on this one. Find the purest isopropyl you can find. I can usually only get my hands on 91% where I am. It's ridiculous the difference in evaporation time between 70% and 91%. Here in Georgia, using 70% almost always means wiping down with a dry rag after wiping down with alcohol. But the 91% evaporates like you would expect alcohol to. Probably has everything to do with the humidity we have here.
     
  13. player

    player Major Contributor

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    We get 99% at Walfart
     
  14. synergy_jim

    synergy_jim Very Active Member

    1 gallon containers of denatured alcohol @ Lowes for $13.00
     
  15. arvindrlaxman

    arvindrlaxman Member

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    After cleaning the glass with IPA, the adhesion was just perfect.We used 99% IPA which is available here for industrial purpose.

    We the sprayed white at the back of the glass... What we noticed was .. we could see few grains of white in the front.. Think we over-sprayed the white.
     
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