UV curing technology was initially adapted for production processes incorporating flat, one-dimensional substrates. As the nature of the process required that the coated surface be within the precise focal point produced by the lamp's reflector, flat substrates, such as paper and board, naturally accepted this advancing technology. As such, industries, such as printing and converting, were the first to truly adopt UV as an accepted finishing process. Recently, though, new developments in UV powder coatings and other finishes have required innovative reflector designs to handle a wide variety of three-dimensional products. As these shapes do not provide a singular focal point required by conventional focused and wide-field reflector designs, UV equipment manufacturers have settled on developing custom reflector configurations to produce even UV coverage over uneven surface patterns.
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