Servo-driven stack flexo printer

For packaging converters and label printers, the servo-driven stack flexo printer represents a major step forward in precision, speed, and operational flexibility. This Stack type flexo printer uses independent digital AC servo motors on every print deck, eliminating mechanical gear trains and reducing setup time. Compared to a conventional Stack flexographic printer, the servo-driven design allows real-time register adjustment without stopping the press. As a modern Stack type flexographic printing machine, it handles film, paper, and board with closed-loop tension control and automatic pre-registration. Converters looking for a compact, high-output Stack flexo press will appreciate the vertical station layout that saves floor space and simplifies cleaning. This equipment is available in web widths from 600 mm to 1600 mm and supports up to 10 color stations, making it suitable for short-run jobs and long production runs alike.

The Servo-driven stack flexo printer is engineered with a heavy-duty cast iron main frame and precision-ground steel rollers to maintain stable print geometry at speeds up to 300 m/min. The centralized PLC system features a 15-inch color touchscreen with recipe storage, automatic job recall, and real-time diagnostics for every servo axis. Print repeat length is adjustable from 300 mm to 1200 mm through servo-driven plate cylinder positioning; no gear changes are required between jobs. The machine processes substrates from 20 gsm tissue to 400 gsm board, including BOPP, PET, PE, CPP, aluminum foil, coated paper, and shrink film. For high-value applications, an optional 100% inspection system verifies print quality and registration at full production speed.

Key technical parameters include:

• Web width options: 600 mm, 850 mm, 1050 mm, 1250 mm, and 1600 mm
• Maximum mechanical speed: 300 m/min (job-dependent production speed)
• Print color stations: 2 to 10, stack type layout
• Repeat length range: 300 mm to 1200 mm
• Substrate thickness: 20 gsm to 400 gsm
• Registration accuracy: ±0.1 mm longitudinal and lateral
• Unwind/rewind roll diameter: 1000 mm standard, 1200 mm optional
• Tension control: Closed-loop load cell, 1 kg to 100 kg
• Drying options: Hot air, infrared, and UV interstation dryers with auto temperature control
• Anilox rolls: Ceramic-coated, laser-engraved, 200 to 1200 LPI
• Doctor blade system: Enclosed chamber with pneumatic loading

The enclosed doctor blade system uses ceramic-coated anilox rolls with laser-engraved cell volumes from 3.5 cm³/m² to 25 cm³/m², ensuring consistent ink transfer and reducing solvent evaporation. Closed-loop load cell tension control maintains web stability from unwind to rewind, with taper control ranging from 1 kg to 100 kg. Interstation dryers can be configured with hot air, infrared, or UV depending on ink type and substrate sensitivity. Optional equipment includes automatic wash-up, web cleaning, corona treater, and video inspection to minimize downtime and operator intervention.

Detailed specifications are summarized in the table below: