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UV Dosage and Exposure

Typical UV curing occurs in the 365 to 405 nm range. UV energy activates photo-initiators that catalyze the formation of polymers from the resin’s monomers.

This action changes the material consistency from a fluid to a gel. As with UV disinfection, it is the UV dosage, i.e. the product of UV power and exposure time, that determines the level of completion or conversely, the residual monomer.


Key performance inputs for a product design include the photo-initiator wavelength sensitivity and the necessary UV dosage. The dosage to perform the curing is a function of the resin. Therefore, the time available to perform the curing drives the UV power requirement.

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