Knowledge base

UV and EB technologies have alreaudy made significant inroads into non food applications due to the numerous advantages which they provide over other technologies (e.g. high gloss, excellent resistance properties, high printing speed, fast drying or cure times, no VOC, low systems cost).

In this study the aim was to iconduct an environmental study from cradle-to-grave (LCA) of four different industrial wood surface coatings, two wax based coatings (one renewable and one fossil based) and two UV lacquers (one water based and one "100% UV" based).

Efficiency of UV-curing strongly depends on the radiation-dose absorbed by the fil,: low UV-dose leads to an incomplete converstaion, poor quality material, unpleasant odor and migration hazards, while non-uniform illumination results in inhomogeneous material performance all over the substrate.

During the 2005 RadTech conference in Barcelona the basics of this new technology had been presented and explained. It will be briefly summarized in the following: a so-called low energy DC plasma initiaties the highly efficient exchange of adsorbed oxygen with yhe inert gas nitrogen on the surface of fast moving substrates.

During the 2005 RadTech conference in Barcelona the basics of this new technology had been presented and explained. It will be briefly summarized in the following: a so-called low energy DC plasma initiates the hughle efficient exchange of adsorbed oxygen with the inert gas nitrogen on the surface of fast moving substrates.

The advantages of Elecron Beam (EB) laminating adhesives haven been previously descibed. The most significant adveantage is that full bond strength is archieves immediately upon curing. This allows immediate slitting and shipping of the laminated product.

This paper presents a new class of saturated and unsaturated photoinitiators, with different structures, containing benzophenone groups, and describes their influence on the shrinkage of solvent-based acrylic pressure-sensitive adhesives (PSAs) coated on PVC film, after UV crosslinking. The main emphasis is on the influence of the new class of copo

For optimized UV curing, it is essential to know the penetration depth of each spectral part of the incident radiation. The usual opinion is, that the shorter wavelengths, esp. UVC, are used to harden the surface and the longer parts od the influence od short and long wavelength radiation separately.