Chemical for cleaning printed picture on plastic material?

In summary: Critical micelle concentration" is the concentration of surfactant where deinking starts to occur. CTAB, TTAB, and DTAB are the three types of surfactants used in this study. CTAB has the highest critical micelle concentration. Critical micelle concentration is the concentration of surfactant where deinking starts to occur.
  • #1
david_lim
4
0
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
 
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  • #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.
 
  • #3
Thx for your reply...

isopropyl alcohol doesn't 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, thanks for your reply...
 
  • #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.
 
  • #5
Forgot to say this: NEVER use acids...
 
  • #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?
 
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  • #7
Sorry, I have no recommendations specifically for 'ink'.
 
  • #8
  • #9
christopher.s said:
You need to know what kind of ink you are working with, solvent based or water based inks. This will govern what kind of process you want to use to deink the bottles. I think the process is similar for both inks but uses some different chemicals, usually a mixture of surfactants at different pH and temperature. I have attached links to two papers detailing ink removal.

http://link.springer.com/article/10.1007/s00396-005-1421-3

http://link.springer.com/article/10.1007/s11743-002-0235-8

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."
 

1. How do chemicals clean printed pictures on plastic material?

Chemicals used for cleaning printed pictures on plastic material work by breaking down and removing any dirt, oils, or residues that may be on the surface of the plastic. They may also contain surfactants that help to emulsify and lift stains or debris.

2. Are these chemicals safe for use on all types of plastic?

The safety of a chemical for use on plastic depends on the specific type of plastic and the chemical itself. It is important to carefully read the instructions and warnings on the product label before use. Some chemicals may be too harsh for certain types of plastic and could cause damage.

3. Can these chemicals damage the printed image on the plastic?

Most chemicals designed for cleaning printed pictures on plastic are gentle enough to not damage the image. However, it is important to test the chemical on a small, inconspicuous area first to ensure it does not cause any fading or discoloration.

4. Do I need to dilute the chemical before using it?

This depends on the specific chemical and its instructions. Some may need to be diluted with water, while others can be used at full strength. It is important to follow the instructions carefully to ensure the best results.

5. Can I use these chemicals to clean other types of surfaces?

Some chemicals may be suitable for use on other surfaces, such as glass or metal, but it is important to check the product label and instructions to make sure. Using a chemical on a surface it is not intended for could cause damage or not produce the desired results.

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