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Stinky UV-printed products ...
February 21, 2008

InfoPrint Solutions Company®

Question: Why are we having such a strong, nasty odor coming from our UV-printed products?

Answer: It is unusual to have an odor from fully cured UV ink or UV coating. If a full cure is not obtained, this could be your problem. For troubleshooting, I would suggest the following: 

1. Have the ink company analyze the odor.
2. Run the paper through the press with no ink or coating. Do you get the same smell?
3. What is the wattage of the lamps? 300 to 400 watt lamps are the usual. I have seen one manufacturer installing 1000 watt lamps with problems.

Keep in mind there are several thousand presses with UV drying running every day with no issues. Thus, odor is a rare problem that can be related to any number of issues. Odor is unacceptable.

Readers, please e-mail your questions to Ray.

Posted by Raymond Prince on February 21, 2008 | Comments (4)


February 22, 2008
In response to: Stinky UV-printed products ...
Mike S commented:

When printing varnish over a laminate, what is the best foutain solution to use: a one step or a two step?




February 25, 2008
In response to: Stinky UV-printed products ...
brian windvand commented:

Odor could also be the result of the PI packaging your ventor is using. Some PI will give you more odor then other, usually the cheaper PI's have strong odors. If your ink is fully cured, ask your ink vendor about the PI package in your inks.




February 27, 2008
In response to: Stinky UV-printed products ...
Alan Carey commented:

Another source of odor is NVP. Check with your ink supplier to see if the ink has NVP. You can ask your ink supplier to include in the ink formulation some odor-masking additive.




February 27, 2008
In response to: Stinky UV-printed products ...
Alan Carey commented:

UV inks that are cationic formulated have less odor.





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