Converting operations that run flexible packaging, shrink sleeves, or paperboard labels often start their press search with a Stack type flexo printing machine because it offers a strong balance between print quality and floor space. The vertical arrangement of the color stations on a Stack type flexographic printing machine shortens the web path and reduces changeover time between repeat lengths. When a converter needs multi-color work with quick makeready, a Stack flexo press delivers solid ink coverage and stable registration on films, foils, and lightweight paper. For plants with limited ceiling height or narrow production aisles, a Vertical stack flexo press provides the same color capacity in a more compact footprint without sacrificing drying efficiency.
The Stack Flexo Printing Machinery is engineered with a heavy-duty cast iron side frame and a shaftless servo drive at every print deck. This design eliminates gear backlash, keeps repeat length changes simple, and allows individual decks to be stopped for sleeve changes while the rest of the press remains in registration. The unwind and rewind stands use pneumatic air shafts and automatic tension control with load-cell feedback, which is especially important when running extensible films such as 12-micron BOPP, 20-micron LDPE, or 50-gauge PET. A chambered doctor blade and ceramic anilox roller combination maintains consistent ink film thickness across long runs, while the interstation drying tunnels can be configured for hot air, electric infrared, or UV depending on the ink system. The standard control system stores up to 200 job recipes, displays registration values on a touchscreen, and supports remote diagnostics through a secure network connection. Each print unit includes an independent impression roller, plate cylinder, and anilox roller with pneumatic engagement, so operators can set kiss pressure quickly and repeatably. The press accepts sleeves from 200 to 800 LPI, making it suitable for line work, screens, and process color. Ink trays drain outward for fast cleanup, and the doctor blade chamber swings open without tools. The web path includes idler rolls with low-friction bearings and an optional web guide at the infeed. Safety guarding, interlocked doors, and emergency stop stations are standard across all models.
| Parameter | SFX-600 | SFX-800 | SFX-1000 | SFX-1200 |
|---|---|---|---|---|
| Maximum web width | 600 mm | 800 mm | 1000 mm | 1200 mm |
| Number of print colors | 2–6 | 2–8 | 2–8 | 2–10 |
| Maximum mechanical speed | 150 m/min | 180 m/min | 200 m/min | 220 m/min |
| Print repeat length | 250–600 mm | 300–800 mm | 350–1000 mm | 400–1200 mm |
| Substrate thickness range | 12–150 µm | 12–200 µm | 12–250 µm | 12–300 µm |
| Register accuracy | ±0.15 mm | ±0.12 mm | ±0.10 mm | ±0.10 mm |
| Drying options | Hot air / IR | Hot air / UV | Hot air / UV | Hot air / UV |
| Unwind/rewind diameter | 600 mm | 800 mm | 1000 mm | 1200 mm |
| Drive system | Shaftless servo drive on all print stations | |||
| Tension control | Closed-loop load-cell control with taper adjustment | |||
| Control interface | PLC with color touchscreen HMI and remote diagnostics | |||
| Anilox roller range | 200–800 LPI ceramic anilox sleeves | |||
