Windmöller & Hölscher has introduced a new wide web central impression flexo press, the Novoflex II, which improves on the design of the original Novoflex.
The Novoflex is aimed at the more demanding applications, sitting in the middle of the W&H range, between the best-selling Miraflex and the fully automated Vistaflex. Dominique Alhäuser, head of corporate communications for W&H explains: “The main advantage that we have with this new version is that if you had an especially challenging design then normally you would have a limited speed range but we can achieve a very high quality without limiting the speed range.”
Thus the printing unit has become more rigid to minimize bouncing while the larger bearings of the anilox rollers and format cylinders together with a small centre distance minimize deflection and vibration influences. In addition job changeovers have been improved with easy access to all the printing unit components for sleeve changes. The press has also gained automatic bearings and sleeve ejection systems. Thus the bearings automatically move to the change position at the touch of a button and the sleeves or adapters are pushed out ready for the operator to remove them. The bearings also close and lock automatically when the sleeves have been changed. Markus Bauschulte, technical sales director for W&H Printing and Finishing division says that this saves time, especially if there’s just a single operator.
The standard M version offers printing widths of 1000, 1270 and 1450mm with a repeat length of 800mm. It can run at 500 to 600mpm. There’s a larger L version, with a repeat length of 1250mm, and printing widths of 1270, 1450 and 1650mm. This can print at up to 800mpm. Both can take eight or ten colour decks
W&H’s existing Easy automation modules can be used with this press, as well as the Vision quality assurance system, which lets the operator control the print production process from a central control panel.
W&H has also redesigned the doctor blade chamber to increase machine uptime. This now includes the new TurboSeal sealing system which promises longer replacement intervals for the lateral seals, even when used with abrasive inks and high printing speeds.
Bauschulte added: “The Novoflex II prints even critical, potentially bounce-inducing jobs, such as those with non-staggered plates with hard edges, at high production speeds. And that without increasing the amount of material needed or using special sticky tapes.”
You can find more details on this at the W&H website here.