Recycled Fiber Quality Management for High-Strength Corrugated Paper Making | Leizhan

Corrugated Paper Production: Process and Equipment

Corrugated medium and testliner production from recycled fiber requires efficient stock preparation and forming technology. Modern lines process OCC into high-quality corrugating medium with consistent strength properties.

Production Line Configuration

• Drum Pulper: Continuous operation, 200-500 TPD, pulping consistency 14-18%
• High-Density Cleaner: 4-stage cascade, heavy contaminant removal
• Pressure Screen: 0.20-0.35mm slots, 2-stage with secondary fiber recovery
• Low-Density Cleaner: Forward cleaning at 0.8-1.2% for lightweight contaminants
• Disc Thickener: Concentrates pulp from 0.8% to 8-12%
• Paper Machine: 3200-4200mm wire, 70-200 gsm, 400-550 m/min

Energy Consumption

• Stock preparation: 60-100 kWh/ton
• Paper machine drive: 250-300 kWh/ton
• Steam: 1.5-1.8 tons/ton paper
• Total specific energy: 350-460 kWh/ton

VFD drives, closed hood heat recovery, and optimized vacuum systems reduce total consumption by 12-18%.

Maintenance Schedule

• Daily: Wire/felt tracking, lubrication, vacuum pump seals, doctor blade contact
• Weekly: Wire tension, felt condition, steam trap function
• Monthly: Sensor calibration, refiner plate inspection, screen basket check
• Quarterly: Doctor blade replacement, press roll cover inspection
• Annual: Dryer cylinder overhaul, bearing replacement, headbox cleaning

Quality Standards for Corrugating Medium

• CMT: 180-250 N (112 gsm)
• SCT: 2.0-3.5 kN/m
• Cobb Value: 30-60 g/m2 (60 sec)
• Moisture Profile: +/-1.5%

Contact us for equipment specifications: leizhanzhang@gmail.com | Zhengzhou Leizhan Technology Paper Machinery Co., Ltd.