Dust and Machine Down Time

Discussion in 'Heidelberg Printing Presses' started by AP_1994, Oct 18, 2021.

  1. AP_1994

    AP_1994 Member

    Joined:
    Jun 2021
    Messages:
    7
    Location:
    Colombo, Sri Lanka
    Dear Friends,

    We have been experiencing great machine idle time because of rogue particles that come with the paper & board. Operators spend a lot of time cleaning the plates every 10 mins. We usually shave the ends of the paper but certain boards and papers have particles that cannot be removed by shaving/trimming the ends.

    What is the best way to remove these particles? Is there a machine that can remove this before feeding the sheets to the printing machine?

    thank you and wishing you all the best,
     
  2. Mathew

    Mathew Senior Member

    Joined:
    Apr 2010
    Messages:
    530
    Location:
    Kolding-Denmark
    Hi,
    Please provide more details. What you are describing looks like a black box. What is your machine type? Format? Ink type, UV or Conventional? And ....
     
  3. AP_1994

    AP_1994 Member

    Joined:
    Jun 2021
    Messages:
    7
    Location:
    Colombo, Sri Lanka
    Machine Type- SM-74
    Ink type - Water Base Offset
    Substrate - Paper and Board
     
  4. junker1984

    junker1984 Senior Member

    Joined:
    Jan 2010
    Messages:
    1,031
    Location:
    US, Midwest
    If you dont have an open (spare) printing unit to use to pick up dust before reaching the utilized units, you’ll need a sheet cleaner, which Heidelberg makes, as does a company by the name of Doyle.
     
    jonprintz likes this.

  5. turbotom1052

    turbotom1052 Senior Member

    Joined:
    Oct 2008
    Messages:
    1,044
    Location:
    Vermont
    You mention cutting the sheets edges, but you dont say if your cutting the edges with the back of a sharp knife. Any stock, but of even more importance, board stock, should whenever possible be running with all 4 edges as it came from the mill or converter. If you must cut your paper to press size, then I would STRONGLY suggest that you make as few cuts as possible, and ALWAYS with the back of a sharp knife. If your not familiar with "back trimming" then I suggest you learn. Once the paper is cut ,you can then wipe the cut edges with either a tack rag, or a shop towel thats been lightly dampened with glycerine. If that does not help, then do as Junker suggested and get a sheet cleaner installed.
     
    jonprintz and mantman like this.
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