When converters evaluate a full servo stack type flexo press for demanding flexible packaging, label, or paper converting applications, they look beyond maximum speed and focus on how the machine handles registration stability, substrate tension, and job changeover efficiency. Unlike gear-driven presses that rely on mechanical synchronization, a full servo stack configuration assigns an independent AC servo motor to each print deck, plate cylinder advance, and anilox metering system. This architecture eliminates gear backlash, reduces maintenance points, and enables real-time phase adjustment while the press is running. It also supports faster makeready because operators can store and recall job recipes with pre-set impression values, dryer temperatures, and tension profiles. The press handles a wide range of substrates including BOPP, PET, PE, aluminum foil, label stock, and lightweight paperboard, making it suitable for both short-run and high-volume production. Our full servo stack type flexo press shares the field-proven geometry of the classic stack type flexo printing machine while adding modern motion control and automation. The design is closely related to the stack type flexographic printing machine platform, which converters have relied on for decades. As a truly servo-driven stack flexo press, the system provides superior repeatability on thin films, aluminum foil, paper, and laminates. The compact vertical stack flexo press arrangement keeps all print units accessible from one side, reducing floor space requirements and simplifying operator workflow. Key technical parameters and standard features are listed below.
| Parameter | Specification |
|---|---|
| Maximum mechanical speed | 300 m/min |
| Print repeat range | 300–800 mm |
| Web width options | 600 / 800 / 1,000 / 1,200 / 1,600 mm |
| Number of color stations | 4, 6, or 8 (modular) |
| Substrate thickness | 12–150 µm (film, paper, laminate) |
| Registration accuracy | ±0.05 mm at full speed |
| Anilox system | Chambered doctor blade with carbon fiber sleeve |
| Plate sleeve system | Quick-change air mandrel |
| Drying system | Interstation hot air, IR, or UV |
| Tension control | Closed-loop AC servo with load cell feedback |
| Unwind / rewind diameter | 800 / 1,000 / 1,200 mm |
The Full servo stack type flexo press is engineered for converters who need to run both short-run label jobs and long-run flexible packaging work without sacrificing print quality. Every print station uses independent servo motors for plate cylinder, anilox roll, and impression setting. This allows precise color-to-color registration within ±0.05 mm even under rapid acceleration or deceleration. The vertical stack configuration significantly reduces web path length, which minimizes waste during splice and job setup. Operators can adjust longitudinal and lateral registration from the main touchscreen HMI without stopping the press. The automatic pre-registration system uses cameras to bring colors into alignment within the first few meters of substrate after a job change.
The modular design of the Full servo stack type flexo press supports downstream and upstream options such as corona treatment, web cleaning, cold foil stamping, lamination, and die cutting. The unwind and rewind units feature pneumatic shaftless chucks, automatic web guides, and tension dancer rollers for stable material handling. A heavy-duty cast iron frame with precision-ground linear guides ensures long-term mechanical stability. The drying system can be configured with high-efficiency hot air nozzles, IR panels, or UV curing modules depending on ink chemistry and production speed. Interstation dryers are placed between each print deck to prevent ink transfer and improve drying on non-absorbent films. The main control cabinet houses servo drives, PLC modules, and safety relays with remote diagnostic capability. Data logging and recipe management software allow converters to track production metrics, repeat jobs accurately, and schedule preventive maintenance. Optional features include automatic wash-up systems, viscosity control, and defect detection cameras. Safety interlocks, emergency stop circuits, and CE-compliant guarding are included as standard, while energy-efficient servo drives reduce overall power consumption compared with hydraulic or gear-driven alternatives. This press adapts to a wide range of flexible packaging, shrink sleeve, label, and paperboard applications.
