Knowledge base

Further to the usual technical and commercial problems that must be solved on a daily basis, printers of flexible and other packaging materials are increasingly confronted with several “modern” issues that must be dealt with or solutions found for. Packaging is becoming a commodity; there is wild competition especially from developing countries hav

Irradiation with low-energy electrons (75 – 300 keV) results in dose gradients across the thickness of the dosimeters that are typically used for dose measurement at these energies. This leads to different doses being measured with different dosimeter thicknesses irradiated at the same energy, resulting in difficulties in providing traceable dose m

As a low VOC technology, UV-curing continuously finds new applications in different industrial sectors, especially in the packaging industry, where UV-printed inks have many advantages over conventional inks, especially in terms of productivity, quality and environmental attractiveness.

UV technology is continually evolving. The UV market hasn’t stopped growing from the early 60s up to now and since 2000, volumes keep increasing and have almost doubled to reach approximately 80.000 t in 2007. UV technology is now widely used in a variety of applications covering industrial-, wood coatings as well as printing inks and varnishes whi

Most of the functional properties of UV-cured coatings strongly depend on the conversion. However, the degree of the conversion, which is achieved by UV irradiation, is influenced by numerous variables. The most important one is the applied irradiation dose, which is determined by irradiance and line speed. Other parameters, which may have an effec

Epoxysilicone chemistry has been described since the 1980’s and has been developed in order to obtain UV-curable coatings for different applications such as, release coatings, conformal coatings [2], optical fiber coatings[3], engine gasket coatings[4]. We are going to describe new feature of the behaviour of such epoxycycloaliphatic compounds poly

Since their introduction half a century ago, acrylic PSAs have been successfully applied in many industrial areas. PSAs are used in self-adhesive tapes, labels, signs, marking films, protective films, ermal dosage systems for pharmaceutical applications, biomedical electrodes, and self-adhesive hydrogels. In the last 50 years, development of a

In comparison to radical photocuring, cationic photopolymerization can still be regarded as a niche technique, although it possesses various advantages such as a reduced shrinking behavior and the absence of inhibition by molecular oxygen. In UV-curable cationic systems, the photoinitiator (PI), which is still most frequently a diaryliodonium- or t