Polytype has announced that its Virtu Vetro ink series for UV-curable production onto glass surfaces has completed a number of performance tests, demonstrating distinction in several key performance areas. The results provide compelling evidence about the excellent compatibility, durability and behaviour of the Virtu Vetro range of CMYK and white inks on float, safety and other glass types for a variety of industrial digital printing applications.
Developed by the Swiss manufacturer for its Virtu range of wide- and superwide-format industrial printing technologies, the inks were printed onto glass panes and examined stringently by an independent, accredited testing laboratory. A primer Virtu bond was used to pretreat the substrate, which was then printed in controlled conditions before being tested extensively in 21 categories.
Of particular importance to Virtu users within industrial digital printing disciplines are conclusions showing the ink's outstanding durability. Virtu Vetro is confirmed to perform excellently with tapes and adhesives, even under stressful conditions; one stress assessment undertaken when using a silicone-based adhesive even demonstrates full adhesion after two weeks of continuous testing. Polytype's Virtu Vetro inks are verified as highly resistant to abrasion, scratching, grinding and polishing, and do not chip or flake when cut.
The printed glass was also subjected to heat and light conditions and monitored for resistance to commercial and industrial chemicals, such as cleaning products, ensuring that it meets European standards. Shock tests designed to replicate unusual environments were also undertaken, as were standard condensation, water and Xenon arc lamp examinations. In all cases the Virtu Vetro ink range did not crack, peel or discolour.
"This latest round of independent examinations validates Polytype's attention to detail and reconfirms our commitment to providing quality printing solutions to our customers," said Sylvia Muhr, sales director for Polytype's Virtu business unit. "We are proud to see our dedication to excellence in ink performance confirmed independently, proving that the Virtu family of platforms and inks is the right choice for every kind of output, whatever its destination."