UV-Technology - the Method


UV curing:

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. 


Natural UV-radiation originates from the sun. UV lamp heads by PrintConcept artificially generate sunlight.

 UV radiation:

The visible light is only  a small part of the possible electromagnetic 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.

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. .

 

 

Man unterscheidet folgende
UV-Strahlen:

UVA range
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)

 


 
PRINTCONCEPT UV-Systeme GmbH | Philipp-Jakob-Manz-Str. 18 | D-72664 Kohlberg | Tel. +49 (0) 70 25 -9 12 77-0 | Fax +49 (0) 70 25 -9 12 77-660