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  • Roll-to-roll printing, advice needed please?

     Martyn Heath updated 1 week ago 3 Members · 4 Posts
  • Martyn Heath

    Member
    July 28, 2020 at 6:15 am

    Morning everyone. How do you guys allow outgassing when printing large roll to roll jobs? Currently printing 70m’s, once finished i usually roll out and cut into say 5m sections to allow to stand loosly and outgass but its obv time consuming but not sure what else can be done.

    Interested to hear your techniques

  • Jamie Wood

    Member
    July 28, 2020 at 9:11 am

    We leave it standing on it’s end on a roll holder, in the full roll for at least 24 hours. Just wiggle the roll so it unravels a bit to allow gassing off. Been doing it this way for 14 plus years, and never had any comeback.

  • Robert Lambie

    Administrator
    July 30, 2020 at 2:36 am

    It really boils down to what you are doing with the prints, Martyn.
    e.g.
    if you are doing vehicle wrapping it must be followed by the book or you will get fails!
    If you are wrapping the likes of a flat truck, the application is made more difficult and you run the risk of bubbles, creases and wrinkles appearing on the surface.

    I have the T-Shirts for probably every fail possible over my past 30 years. Rofl

    Keep this in mind, the solvent is heavier than air, so it naturally falls. so suspending or elevating your print a few inches off the ground allows this to happen easily.

    here is a domestic clothes pully. lower it, hang prints over it and pull it back up to the ceiling to dry. keeps it out the road and free of dust etc. as I say, this is a domestic bought one, it’s very easy to make your own and modify it to suit yourself.

    I’ve attached two pictures showing outgassing fails. these were not mine, thankfully… but shows you what can happen when fitted to the likes of a vehicle.

    When fitted to a vehicle the vinyl is now flat to the metal bodywork, so the solvent gas cannot go back the way, so it has to come out the front. but if it has a laminate. the laminate traps the gasses. sometimes causing microbubbles. sometimes creases and so on. sometimes the vinyl just starts peeling back off because the solvent attacks the adhesive of the laminate.

  • Martyn Heath

    Member
    July 30, 2020 at 7:44 am

    Thanks for the replies guys. Yes i totally get what your saying and if it was for wrapping i would leave 48hrs and the runs wouldnt be so long so could handle better for outgassing.

    This 60m job is for industrial machinery so they are flat.

    So far i print 20m runs, leave it on the roll and have left it standing up off the floor for 24hrs before laminating.

    If you was the get fails as shown in the pic, whats the timescale? days, week or months

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