Rotogravure printing press

for paperfor plastic filmfor packaging

Overview
Our Variable-Speed Rotogravure Printing Machine integrates variable-frequency drive (VFD) and electronic line-shaft servo control to manage cylinder rotation and web transport independently. This architecture ensures precise synchronization between unwinder, printing units, dryers and rewinder, eliminating register drift during speed changes and enabling smooth start/stop operations with minimal material waste.

Features
Variable-speed precision printing adaptable to paper, plastic film, metal foil and other substrates. Supports zero-speed splicing, dynamic closed-loop tension control and electronic gearing for consistent color density and uniform print quality across production runs.

Key production benefits

• Variable speed for flexibility across different materials and printing requirements
• Eliminates mechanical transmission errors and register drift during speed changes
• Dynamic tension control and floating roller system reduce material breaks and downtime
• Regenerative braking modules and high-torque vector-control motors deliver up to 25% energy reduction
• Closed-loop electronic tension and PLC control enable consistent performance and predictive maintenance via VFD/SCADA data (current, torque, temperature)

Applications
Food packaging (high-barrier retort pouches, PET/AL/CPP structures), pharmaceutical packaging (printing on hard-tempered aluminum foil, blister packs requiring legible micro-text and perfect barcodes), heat-shrink sleeves (precise temperature and speed correlation), and daily chemical packaging (cosmetics and personal care requiring vivid colors and sharp graphics).

Quality & Maintenance
Static and dynamic balance testing conducted to achieve near-zero vibration at maximum speeds; guide rollers and printing cylinders balanced to G2.5 grade. Auto-registration and color-mark detection validated to maintain accuracy during speed changes. Solvent retention analysis by gas chromatography verifies drying tunnels effectively remove solvent residues. Maintenance is reduced by removing mechanical line shafts and gearboxes; diagnostic focus shifts to electronics and bearing lubrication, enabling predictive maintenance strategies using VFD/SCADA signals.

Technical Specifications (table)
Printing Speed: 150-500 meters/minute
Web Width: 800mm-1300mm
Registration Accuracy: ±0.1mm
Substrate Thickness: 7-250 microns
Control System: Siemens/Mitsubishi PLC
Drive Technology: Variable Frequency Drive (VFD)
Tension Control: Electronic closed-loop system
Drying System: Intelligent variable air velocity
Balance Grade: G2.5 for cylinders and rollers
Power Efficiency: Up to 25% energy reduction

Characteristics / technical specifications

• Printing speed: 150-500 meters per minute
• Web width: 800 mm – 1300 mm
• Registration accuracy: ±0.1 mm
• Substrate thickness range: 7 – 250 µm
• Control system options: Siemens or Mitsubishi PLC
• Drive technology: Variable Frequency Drive (VFD) with electronic line-shaft servo integration
• Tension control: Electronic closed-loop tension control
• Drying: Intelligent variable air velocity drying system
• Balance grade for cylinders/rollers: G2.5
• Energy efficiency: Regenerative braking modules, up to ~25% reduction versus traditional DC systems
• Operational advantages: Zero-speed splicing, floating roller system, reduced downtime and lower maintenance compared to mechanical line-shaft systems
• Typical material handling: paper, plastic film, metal foil (including ultra-thin 7 µm aluminum foil)