PRIMERS, LIQUID LAMINATES and INK for PRINTERS and PLOTTERS
MODERN UV FILTERS IN LIQUID LAMINATES FROM PRIM JET COLOR
Prim Jet Color developed and produced liquid laminates Top Coat, which resistance to the UV radiation exceed even 6 years!
This is an unprecedented event and a breakthrough in the production of liquid laminates. This was achieved by searching the optimum formulation for long time protective coatings and after running costly tests. This success was made possible through the cooperation of Prim Jet Color with Antaria - a world leader in the production of plastics and UV filters.
The key to success was the use in Prim Jet Color laminates nanoparticles of zinc oxide as a UV filter. Technology of zinc oxide nanoparticles (the original name NanoZTM) developed and patented by Antaria is the best of the currently known and the most modern methods of protection against UV radiation.
The effectiveness of the protective properties Prim Jet Color laminates has been confirmed by expensive research commissioned by Prim Jet Color in specialized laboratories.
"Long we looked for a suitable recipe of laminate, which would provide on the one hand, extremely long protection against UV radiation, and on the other hand also would increase the aesthetic value of protected printouts. Thanks to cooperation with Antaria we were able to create a product of the XXI century: ecological and efficient at the same time. We're really proud that as a few companies, after carried out UV tests we have full knowledge of how the printout will look our after 1, 3, 6 years" says managing director Prim Jet Color, Jolanta Airaut.
Laminates from Prim Jet Color bring a new quality to a market of large format advertising. With these products, manufacturers of automotive graphics, window graphics, floor advertising, tarpaulins, canvas, flags, and other applications have the opportunity to significantly improve the quality of their products.
APPLICATION OF NANO-TECHNOLOGY IN LACQUER TOP COAT* - LABORATORY STUDIES
All included in this paragraph results of scientific
investigation and measurements concerning ZnO as a UV-blocker was obtained
by the firm Advanced Nanotechnology Limited, Australia.
Top Coat contains zinc oxide ZnO as an
optically active substance to reduce the unwanted influence of ultraviolet
radiation on the printout made using dye or pigmented water-based, solvent
inkjet ink, sublimation transfer, serigraphy, etc.. On the printout not
coated by lacquer Top Coat one can observe
fading of colors and yellowing of white parts of printout over time.
There are problems with other inorganic absorbers. Coating acceptability limits the amount of inorganic that can be used. Formulations are limited in the amount of Fe2O3 or TiO2 than can be used without causing color or whiteness problems.
Photons, the quanta of light, are either specularly or diffusely reflected, absorbed or pass through the coating. Diffuse scattering causes whitening. The intensity of diffuse scattered light is proportional to third power of UV-blocker particle’s diameter.
On the drawing below is presented the size distribution of the UV-blocker nanoparticles used in lacquer Top Coat . It is evident that diffuse scattering of light can be neglected.
On the drawing below are presented transmittance curves of UV radiation
through medium coated by lacquer with different UV-blockers (on the basis of
zinc oxide ZnO) as a function of light wavelength. An ideal UV-blocker ought
to block UV radiation in the range 200—400 nm, but visible light, 400 - 800
nm, should to be transmitted without loss of intensity. As is shown below,
on the basis of transmittance measurements, the nano-powder used in lacquer
Top Coat is a
perfect component to protect printout without whitening effect.
Lacquer Top Coat, as an universal lacquer can not only be used to protect inkjet ink printouts, but also to protect any kind of printout on special media like for example tiles in bathroom, glass, metal, stone, wood and other objects under direct UV radiation.
A good example can be photographs below showing the influence of UV radiation on wood.
It is difficult if not impossible to accurately predict how long coatings will last based on accelerated exposure data as it depends “where” you are in the world and how the panel is exposed (i.e. North, South facing & horizontal, vertical or 45 degree pitch etc.). What can be stated with certainty is that products showing better durability on QUV testing will perform better on exterior exposure.
* In lacquer Top Coat is used as a nano-blocker zinc oxide ZnO produced by the firm Advanced Nanotechnology Limited, Australia
RESULTS OF LACQUER TOP COAT LIGHT-FASTNESS TESTS
The QUV exposure tests of water-based pigmented ink printouts made on photographic paper were performed in Advance Nanotechnology Limited Laboratory. The printouts were coated using various kind of lacquer Top Coat. The results of changes in printouts color after 2000 hours of QUV340 lamp exposure are as follows:
The numerical results presented in table above are obtained according to CIE Lab color system L a*b*.L defines lightness, a* denotes the red/green value and b* the yellow/blue value.
In the table above are shown pictures of uncoated pigmented ink printout and printouts coated using various kind of lacquer Top Coat, respectively. Uncoated panel after 200 hours of QUV exposure is completely faded. The printout protected by Ultra Extended lacquer Top Coat is stable, the attributes of printouts color are nearly the same as those of uncoated panel before tests. Detailed results of QUV tests are placed in the file uv tests pigmented ink.pdf
The QUV exposure tests of
water-based dye ink printouts made on photographic paper were performed in
Advance Nanotechnology Limited Laboratory. The printouts were coated using
various kind of lacquer Top Coat. The results
of changes in printouts color after 200 hours of QUV340 lamp exposure are as
The numerical results presented in table above are obtained according to CIE Lab color system L a*b*. L defines lightness, a* denotes the red/green value and b* the yellow/blue value.
In the table above are shown pictures of uncoated dye ink printout and printouts coated using various kind of lacquer Top Coat, respectively. Uncoated panel after 200 hours of QUV exposure is completely faded. The printout protected by Ultra Extended lacquer Top Coat is stable, the attributes of printouts color are nearly the same as those of uncoated panel before tests. Detailed results of QUV tests are placed in the file uv tests dye ink.pdf
Scientific publications in renowned scientific journals concerning photo-physical properties of organic dyes and polymers.