UV-Technology - the Method
UV-curing is a so-called polymerisation. Polymerisation is a chemical reaction in which single particles (= monomers) react, under the influence of UV-radiation, as catalysts to polymeres (=molecules with long chains, consisting of interlinked monomeres). After the influence of UV-radiation, the liquid binder components immediately link to a solid, dry colour film. The photoinitiator absorbs the energetic UV-radiation. UV-colours are absolutely solvent-free and thereby environmentally- as well as user-friendly. The visible light is only a small part of the possible electromagnetic radiation. . The term ultraviolet (means something like "beyond violet) derives from the fact that the UV range begins with wave bands a little shorter than the ones humans identify as blue-violet.That is why the term "UV light" is actually misleading, because UV radation simply cannot be seen. . UVA range
UV curing:
Natural UV-radiation originates from the sun. UV lamp heads by PrintConcept artificially generate sunlight.
UV radiation:
Short wave light is seen as violet by humans. It is located in the UV range(wave band of ca. 380-100 nanometers). If the wave bands become even shorter, we cannot see the radiation anymore.
Man unterscheidet folgende
UV-Strahlen:
380 - 315 nanometers* = long wave radiation (used for curing of high coats of paint or laquer)
UVB range
315 - 280 nanometers = medium wave radiation (used for curing of the middle coats of paint or laquer)
UVC range
280 - 100 nanometers = short wave radiation (used to start fast polymerisation)
* (1 nanometer = 1 part in a billion meter)





