With the development of the S10, Serbian OEM Vallis has laid the foundation for a new generation of gearless stack-type flexo printing machines. Developed in close collaboration with the parent company ENEL Valjevo, and with the support of the Siemens Application Center (APC) for printing technologies, the S10 offers a high degree of automation for greater precision, faster product changeovers, and higher efficiency in terms of waste reduction, energy conservation and operational effort.
Growing requirements for print quality, shorter product cycles, and a larger number of individual designs: Global packaging trends are increasing the industry’s demand for flexible and efficient printing solutions. That’s why the Serbian OEM Vallis took the plunge as a newcomer to the printing press market and created the S10, a highly automated gearless stack-type flexo printing machine that compares more than favorably with products from long-established manufacturers.
Developed from scratch
Perhaps being a newcomer was just the right key to the company’s success. Branislav Srećković, CEO of Vallis:
Because we didn’t have to build on any established concepts, we were able to design the S10 from scratch – taking advantage of our experience from numerous projects in other industries, the collaboration with our colleagues at ENEL Valjevo, and the support of the Siemens Applications Center for printing technologies.
The result is impressive: A total of 68 individually driven cylinders and spindles seamlessly synchronized via Sinamics S120 frequency converters ensure that the S10 prints up to 120 cm-wide films and other materials in eight-color mode at up to 250 m/min. Innovative automation features ensure that the print quality meets the highest standards after just 20 meters of printing.
With a total of 68 seamlessly integrated servo drives, the S10 is perfectly designed for high-quality flexo printing.
Automated high print quality
To ensure maximum print quality and user-friendliness, Vallis equipped the S10 with two innovative and proven applications from the Print Standard Library. The Cylinder Positioning add-on enables fully automatic movement of the format cylinders and the anilox cylinders in the micron range. This enables a fast adjustment to the optimal contact pressure of the cylinders required for perfect ink application. But contact pressure isn’t the only decisive factor for print quality: The S10 also features state-of-the-art register control for the length and side register. Says Srećković:
Based on data from an automatic camera check of the registration marks and the Register Control add-on, the S10 continuously determines the position of the printed colors in relation to each other and automatically adjusts in the event of deviations. This saves time and reduces waste.
Clear benefits
Thanks to end-to-end automation, the time required for job changes is reduced to an absolute minimum
Thanks to the high level of automation, the uncompromising servo-drive technology, and the experience gained from the practical use of the S10, Vallis can already report numerous benefits of the S10 compared with conventional flexo printing units.
Our customers profit from 15 percent faster print job adaptation and 50 percent higher machine speeds with better productivity from the same footprint. We in turn profited from 35 percent faster engineering thanks to TIA Portal, the advanced printing and converting applications from Siemens, and personal support from the APC in Erlangen,
Srećković adds. No wonder the CEO of Vallis currently has no plans to further develop the S10.
The machine is perfect as it is, and the demand proves us right.
More about the reference: https://sie.ag/3njwHY1 and Siemens printing solutions: https://siemens.com/printing
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