[HELP!] Correx UV printing Issues

[josefkim234]

Hello there!
I am a newbie here currently living in Seoul, S. Korea.

I have a new British client who asked me to print stuff on Correx with my UV printer.

Correx is something we, Koreans, do not use often (we use Foamex and Foam board) so I had to import some Correx boards from Hong Kong.
After several weeks of waiting due to the lockdown in Hong Kong, I finally got to test it on my printer.

This happened.

I did some research online and I figured that I need to do either
1. Corona treatment
or
2. Applying Primer

I can purchase some primers in Korea but Corona treatment on this kind of large flat material is not something I heard of doing in Korea.

Would applying primer work?

Any other suggestions?

Thank you.

 

[Pauly]

You usually buy the corrugated plastic corona treated.
Try asking your supplier, or find another one and ask if they're corona treated.

 

[Souldar]

You can also buy what is called adhesion promoter. Supply 55, AP 3155 or something similar. You spray it on and wipe it down before printing. It also works on aluminum, glass, plexiglass and most other plastics.

 

[signheremd]

Surface needs proper prep. We use Solv S1000 Surface Cleaner Prep spray.

1 Gallon S1000 INX Clean Prep Remover

INX#SOLV1128(INX PRODUCTS LLC)()(S1000 1 GALLON BOTTLE 3 INX CLEAN PREP REMOVER)(Digital)(Supplies)(Cleaning Solvents)

tubelite.com

There are others, like this one we have been meaning to try (I think someone else mentioned here).

UV Adhesion Promoters For Use With UV & LED Inkjet Flatbed Printers

Our UV adhesion promoters work with UV & LED curable inks when printing on plastics, metal, glass, acrylics, PVC, and other substrates depending on which bottle you purchase.

supply55.com

 

[Signman001]

For Correx, and Polypropylene plastics you need the Natron PP adhesion promoter - if the substrate is treated with corona from the manufacturer, it will eventually go back to it is original state (low surface energy) which will make the inks not to adhere to the substrate. PP Primer which is a wipe on adhesion promoter alters the surface tension which allows the ink to bond with the substrate. Unlike corona, PP primer have about 36 - 48 hrs work window during which you can print your substrate and achieve permanent results...

Inkjet Primers

Inkjet primers and UV ink adhesion promoters for glass, stainless steel, coated metals, carbon fiber, tiles, plastics, and more.

bostonindustrialsolutions.com