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The physical properties of UV-cured materials are substantially affected by the lamp systems used to cure them. The development of the intended properties, whether a varnish, an ink, or an adhesive, can depend on how well these lamp factors are designed and managed. The four key factors of UV lamps are: UV irradiance (or intensity), spectral distribution (wave lengths) of UV, dose (or time-integrated UVenergy), and infra-red radiation. Inks and varnishes will exhibit very different response to peak irradiance or dose, as well as to different UV spectra. The ability to identify the various lamp characteristics and match them to the optical properties of the curable materials, widens the range in which UV curing is a faster, more efficient production process. This paper explores the reasons for clearly identifying these factors for process optimization.
