The shaftless flexographic press represents a major engineering shift for package printers, eliminating the traditional gear train and line shaft that connect printing decks. Every plate sleeve and anilox roll is driven by its own AC servo motor, which removes mechanical backlash and allows infinitely variable repeat lengths within a given sleeve range. This platform delivers the same core benefits as a Gearless flexographic press, including reduced vibration, cleaner screen work, and faster register correction. When comparing a Gearless flexo printing press to conventional geared models, the shaftless configuration shows measurable improvements in dot gain stability and solid ink density. The system is also fully comparable to a Full servo flexo press because all impression and register settings are stored electronically and adjusted from the main console. For high-volume flexible packaging, the machine can be configured as a Full servo flexographic printing machine with additional color decks, inline coating, and high-speed drying. This design is particularly effective for short-run label production, flexible packaging, shrink sleeves, and paper cup stock, where rapid changeover and repeatable quality are critical. Because there are no gear teeth to wear, the press maintains its registration accuracy over many years of continuous operation, reducing the need for mechanical recalibration. The shaftless layout also shortens the web path, which lowers waste during start-up and splice sequences.
| Parameter | Specification |
|---|---|
| Printing width | 850 mm – 1650 mm (custom up to 2600 mm) |
| Number of colors | 4 – 12 (expandable in 2-color modules) |
| Max mechanical speed | 450 m/min |
| Max printing speed | 380 m/min (substrate dependent) |
| Printing repeat length | 300 – 900 mm (sleeve-based, optional up to 1200 mm) |
| Register accuracy | ±0.05 mm (longitudinal and lateral) |
| Substrate thickness | 12 – 300 micron (film, paper, laminate, foil) |
| Anilox roll | Laser-engraved ceramic, 60 – 1200 LPI, 2.5 – 18 cm³/m² |
| Drying system | High-efficiency nozzle dryer, flow adjustable per deck |
| Unwind / rewind diameter | 800 mm – 1500 mm |
| Tension range | 10 – 200 N (closed-loop, load cell) |
| Main drive | Full servo, AC vector motors with absolute encoders |
| Power supply | 380V / 50Hz / 3P (optional 440V / 60Hz) |
The Shaftless Flexographic Press is built for converters that need rapid job changeovers without compromising print consistency. Each print station accepts lightweight carbon fiber sleeves, so a single operator can exchange a complete set of plates and anilox rolls in under 15 minutes. The doctor blade chamber pivots away for cleaning, and ink pans are designed for quick drain and color change. Web tension is measured by load cells at the unwind, infeed, outfeed, and rewind zones, with a closed-loop algorithm that automatically compensates for roll diameter changes and substrate stretch. Impression pressure, lateral register, and repeat length are set from a central touchscreen, and stored recipes cut setup time on repeat jobs by up to 40%. The press handles a broad range of materials including BOPP, PET, PE, paper, aluminum foil, self-adhesive labels, and shrink film. Its servo-driven design eliminates gearbox oil changes and reduces energy consumption by roughly 30% compared to geared machines. The drying system uses adjustable high-velocity nozzles to match ink coverage, supporting water-based, solvent-based, and UV-curable inks. The machine can be equipped with automatic viscosity control, corona treating, web cleaning, and inline color measurement to further stabilize process conditions. The Shaftless Flexographic Press also connects to downstream slitting, sheeting, or lamination modules, making it a flexible backbone for a modern converting line. The shaftless drive system additionally improves highlight dot reproduction because there is no torsional vibration from gear meshing, allowing printers to run finer anilox rolls and higher line screens for smoother vignettes and more consistent skin tones on flexible packaging.
