Printech Archive
Re: Reported Odors from UV Offset Printing


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From: Wayne Pferdehirt (pferdehi@epd.engr.wisc.edu)
Date: Thu Sep 24 1998 - 08:24:48 CDT


------- Forwarded Message Follows -------
From: gjonesprinting@aol.com
Date: Wed, 23 Sep 1998 12:21:38 EDT
To: Marcel.Mennen@rivm.nl
Cc: Pferdehi@epd.engr.wisc.edu, rhartwig@printing.org
Subject: Re: Reported Odors from UV Offset Printing

Dear Marcel:

When a UV material is overcured, it can release low molecular weight
compounds from the ink or coating. Some of them will volatilize as
there is a considerable amount of heat involved in the actual curing
process. As to the specific composition, I have not seen any studies
on this subject which would identify the individual compounds in
question. Their composition would be very dependent upon the exact
oligomers and monomers which are used to formulate the ink or coating.
As the identity of these are a closely guarded secret, it would be
best to contact the supplier for more information. You could also
conduct some air sampling at and around the unit in question and
identify the composition of the materials via Gas chromatography/Mass
spectroscopy.

Gary Jones
GATF


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