For flexible packaging converters, label printers, and specialty paper product manufacturers, a Stack type flexo printer offers a proven path to high-quality multi-color printing without the heavy footprint or high capital cost of a central impression press. The open-frame structure of a Stack type flexographic printing machine arranges each color station on a vertical column, so operators can reach plates, anilox rolls, and ink trays from floor level, which speeds up cleanup and changeover. For shops that run frequent job changes across film, foil, or paper, a stack flexo press reduces makeready time and simplifies maintenance because every deck is independently accessible. A well-configured stack type flexo printing machine can handle line work, process color, and solid coverage on a wide range of substrates while holding consistent color density from roll to roll. Typical uses include printed plastic bags, frozen food packaging, paper sacks, wrapping paper, and industrial wrap where durable print adhesion and fast drying are essential. The standard press accepts water-based, solvent-based, and UV-curable inks, and it can be equipped with corona treatment, web guiding, and closed-loop tension control. Independent print station control allows precise adjustment of impression pressure and registration without stopping the line, which improves output in high-mix production environments.
The Stack Flexographic Printer is built on a precision-machined cast iron frame that minimizes vibration and maintains alignment during sustained runs. Each print deck is equipped with a chambered doctor blade system, a ceramic-coated anilox roll, and a quick-change plate cylinder to support fast job turnover. The central drive shaft with fine-pitch gears or servo motors keeps all stations synchronized, while a closed-loop tension system with load cells or dancer rollers controls web elongation on thin substrates. Drying options include hot air, infrared, or UV between stations and after the final print deck, depending on ink type and substrate sensitivity. The print cylinders are dynamically balanced, and automatic lubrication points extend bearing life under continuous operation. All ink trays and splash guards are designed for quick removal and cleaning, which reduces downtime in multi-color jobs. The following list summarizes the core mechanical and control features of this machine:
The table below provides the primary technical specifications for the standard model.
| Parameter | Standard Specification |
|---|---|
| Max mechanical speed | 150 m/min |
| Normal production speed | 80–120 m/min depending on ink, substrate, and print length |
| Color registration accuracy | ±0.15 mm longitudinal; ±0.10 mm lateral |
| Web guide accuracy | ±0.1 mm |
| Print repeat range | 250–800 mm |
| Web width range | 600–1200 mm |
| Anilox roll line screen | 200–800 LPI |
| Plate cylinder runout | ≤0.02 mm |
| Gear pitch | 1/8 CP or 1/4 CP |
| Ink system | Water-based, solvent-based, or UV |
| Drying temperature | Room temperature to 90°C adjustable |
| Main drive | AC servo or frequency-controlled motor |
| Unwind/rewind diameter | 600 mm / 800 mm / 1000 mm |
| Air consumption | 0.6–0.8 MPa, 1.2–2.0 m³/min |
| Machine dimensions (L×W×H) | Varies by width; approx. 4.5×1.8×2.6 m for 1000 mm model |
| Power supply | 380V/50Hz 3-phase (customizable) |
