Coating unit Bounce

Discussion in 'Mitsubishi Printing Presses' started by Frankjmh, Oct 25, 2019.

  1. Frankjmh

    Frankjmh New Member

    Joined:
    Jul 2018
    Messages:
    2
    Location:
    Pennsylvania
    We are experiencing "bounce" on the tail end of our sheets coming off the coating unit. It is on the operator side and at the bottom of the sheet it is creating a miss in the varnish. It is also creating build up on the varnish plate in the same area and causing the sheets to stick towards the end of the run. We have replaced the cam follower and lever on the operator side, but has not made a difference. Looking for any suggestions
     
  2. turbotom1052

    turbotom1052 Senior Member

    Joined:
    Oct 2008
    Messages:
    808
    Location:
    Vermont
    not fully understanding what you're asking... You mention a varnish plate, and in another breath you talk about a coater. Please verify so that we can help.
     
  3. NotAGooner

    NotAGooner Senior Member

    Joined:
    Dec 2007
    Messages:
    262
    Location:
    UK
    Isn't what he is referring to, a Cyrel plate, it's a letterpress plate for coaters?
     
  4. turbotom1052

    turbotom1052 Senior Member

    Joined:
    Oct 2008
    Messages:
    808
    Location:
    Vermont
    i suspect we will never know to what he is asking. I do know that in some parts of the world, coating applied through a printing unit is also referred to as "varnish".
     

  5. hold_my_beer

    hold_my_beer New Member

    Joined:
    Feb 2019
    Messages:
    2
    Location:
    OKLAHOMA
    Have you changed the felt pieces on the ends of the coating roller? Also, have you timed the coating to see if it's too thick or too thin? Are you using paper packing or that soft black 1 piece packing?
    On a lighter note, has this problem caused you to gain a new addiction?