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Chemical for cleaning printed picture on plastic material?

  1. Mar 11, 2014 #1
    Hi all,

    I'm david from indonesia. Sory for my english.

    Can you help me to found a chemical that I can use to cleaning printed picture on plastic material?

    This is for recycling, means in big volume...

    Thanks before
    Last edited by a moderator: Mar 13, 2014
  2. jcsd
  3. Mar 12, 2014 #2
    Hi David,

    Best to do some testing with samples that you don't care about ruining. Start with warm water, then perhaps with a little soap added (try Dawn or equivalent). If that doesn't work, I'd try Isopropyl Alcohol. A lot depends on what material you are trying to remove from the plastic material. For large amounts of material, ultrasonic degreasers may be appropriate.
  4. Mar 12, 2014 #3
    Thx for your reply....

    isopropyl alcohol doesnt work, also alcohol will evaporation faster.

    May i know what chemical when we use ultrasonic cleaner?

    Wondering i can found a chemical, maybe acid or something like that which can easy clear the printed from plastic

    Anyway, thx for your reply....
  5. Mar 13, 2014 #4
    You'd need to experiment - the items I've mentioned are known to be non-toxic. There are many toxic options, but you would be risking the health of the personnel. If you want to go the ultrasonic route, best to contact the companies who sell these units and ask for their recommendations. As mentioned, it largely depend on what contaminant is on the plastics to remove, and finding a solvent that won't attach the item itself.
  6. Mar 13, 2014 #5
    Forgot to say this: NEVER use acids...
  7. Mar 13, 2014 #6
    Its for big volume, so i need chemical that easy to use.

    Can you recomended to me the name of chemical that possible to remove the ink?
    Last edited by a moderator: Mar 13, 2014
  8. Mar 14, 2014 #7
    Sorry, I have no recommendations specifically for 'ink'.
  9. Apr 13, 2014 #8
  10. Apr 13, 2014 #9
    thx for the reply...

    i think that's solvent based, i'm not a chemical specialist...may u explained this quotes more simple...?

    "Complete deinking was achieved at concentrations about 3, 8, and 24 times of the critical micelle concentration (CMC) of CTAB, TTAB, and DTAB, respectively. For CTAB, ink removal started at a concentration close to or less than its CMC and increased appreciably at concentrations greater than its CMC, while for TTAB and DTAB, significant deinking was only achieved at concentrations much greater than their CMCs."
  11. Apr 14, 2014 #10
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