Ultra High Viscosity Technology is providing manufacturers with an array of new and practical production possibilities by enabling a much wider range of fluid viscosities and chemistries to be printed at around 100 centipoises (cP) at jetting temperature, equating to approximately 1000cP at ambient temperature.
This ability to jet higher viscosity fluids is opening the toolbox for ink manufacturers such as Marabu. The 165-year-old business develops digital inks as one of its three business pillars, and the options to develop new fluids for inkjet printing have been transformed through enabling the use of materials and chemistries that haven’t been possible with other inkjet printheads.
“Xaar’s Ultra High Viscosity Technology is a real step forward in industrial inkjet printing – a ‘game-changer’ – as we move from analogue to digital print,” said Tobias Lang, Marabu’s Product Manager for High Viscosity Inks.
“For example, we can create new inks that allow high-impact, reliable jetting with sharp contours, enabling the layering of durable, resistant haptic effects. In the low-viscosity era, meeting high image quality requirements demanded a more complex process, which high-viscosity inks simplify by creating a wider process window at faster production speeds.”
This has been seen recently with the successful collaboration between decorative print machine manufacturer Koenig & Bauer Kammann (Kammann), Marabu and Xaar.
Combining Xaar's printheads, Marabu's Ultra High Viscosity and Kammann's digital print innovation, creating embossed effects on glass bottles and other packaging at a laydown build height up of to 3mm, without compromising on the intricate details of the embossing and sharp contour edges, is now possible. This innovation has been driven through the collaboration of all three partners, with printhead manufacturer, ink supplier and machine builder using their expertise to open new possibilities that traditional analogue printing methods cannot deliver.
The new inks are opening eyes to new potential for inkjet printing. Xaar’s Group R&D Director, Karl Forbes highlighted some of these opportunities as part of a talk titled, ‘Seeing is believing’ at FuturePrint Tech’s ‘Digital Print for Manufacturing’ conference. Visitors saw the results of independent research from Swansea University showing the impact that high viscosity inks can have in traditional print applications with Xaar’s Ultra High Viscosity Technology.
“By improving print quality at higher speeds with less ink and energy required, the ability to jet a wide range of high viscosity, high particle loaded fluids is driving change on many levels,” said Karl.
“The collaboration between all our businesses to deliver innovation in decorative printing is a prime example of what Ultra High Viscosity is enabling. I have no doubt that this project is just the start, and the combination of new ink chemistries, machine know-how and our printheads will deliver fundamental change to many industries over the next few years.”
