If the UV inks are cured properly, then uncured inks should not be a problem.
Uncured inks do not cause skin sensitivity, but oftentimes incorrectly trained
personnel. So, the bottom line -- UV inks can stillcause skin irritations, but
the use of personal protective equipment minimizes the danger.
Bonus questions -- UV inks still cost more than conventional solvent based
inks, however, you are able to print more square inches per gallon of UV ink.
De-inking -- I do have some information on this, but will have to dig it up.
It supports the use of UV technology and recycling efforts.
Toxics in UV inks -- the only known toxic scare had to do with NVP and a
manufacturers', not OSHA, recommended exposure level. To my knowledge, this is
not a problem since most UV ink manufacuturers removed NVP or the printers
discovered they did not have an overexposure problem.
This information pertains specficially to the use UV technology within the
screen printing industry. Anything else, please contact me directly at
703-359-1313 or via e-mail through these listservs.