SOLUTION
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Complete OCC Pulping Line for Kraft Liner Board: 300-600 TPD...
Kraft Liner Production: Equipment and Process Overview Kraft linerboard production from recycled fiber requires a carefully integrated stock preparation and paper machine system. The process converts OCC (old corrugated containers) and kraft cuttings into high-strength linerboard suitable for corrugated box manufacturing. Key Equipment Specifications A complete kraft liner production line rated at 300-600 TPD includes the following major equipment: Hydraulic Pulper: D-type design, 132-500 kW motor, pulping consistency 4-6%, batch time 15-20 minutes High-Density Cleaner: 3-4 stage cascade, inlet consistency 3-4%, reject rate below 8% Pressure Screen: 0.15-0.35mm slots, 2-stage screening, fiber recovery above 95% Double Disc Refiner: 660-910mm discs, 250-900 kW, freeness reduction 8-12 °SR per pass Paper Machine: 3200-4800mm wire width, 90-250 gsm, 350-500 m/min design speed Energy Performance Data Operating data from kraft liner mills shows the following energy benchmarks: Stock preparation power: 80-120 kWh per ton of pulp Paper machine drive power: 280-320 kWh per ton of paper Steam consumption: 1.6-1.8 tons per ton of paper (closed hood) Water usage: 8-12 m3 per ton (closed-loop recycling) These figures represent a 15-20% reduction compared to older configurations, achieved through optimized rotor designs, heat recovery, and VFD controls. Maintenance Guidelines Daily: Check lubrication levels, inspect doctor blade contact,...
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Recycled Fiber Processing for Corrugated Medium: Achieve 95%...
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...
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Multi-Layer Coating Board Production: Key Equipment for Qual...
Coating Board Production Technology Coating board production combines multi-layer forming with precision coating application. The process requires careful control of fiber composition, formation uniformity, and coating formulation to achieve the surface quality demanded by packaging converters. Multi-Layer Forming Configuration Top Liner: Bleached kraft pulp, 25-40 g/m2, high brightness for print surface Middle Layer: Mechanical pulp or deinked pulp, provides bulk and stiffness Back Liner: Unbleached kraft or recycled fiber, 25-40 g/m2 Coating Layers: Pre-coating (10-15 g/m2) + top coating (8-12 g/m2) per side Equipment Specifications Headbox: Multi-layer with 3-4 channels, slice opening 12-18mm Fourdrinier: 25-30m wire length with dewatering elements Press Section: 3-nip, 80-150 kN/m, dryness target 46-48% Dryer Section: 36-48 cylinders, 1800mm, 4-5 steam groups Coating Station: Blade or air knife, 400-800 m/min Calender: 2-4 nips, heated rolls for surface finish Energy Data Steam: 1.8-2.2 tons/ton paper Electric power: 350-450 kWh/ton Coating drying: 30-40% of total energy Maintenance Intervals Daily: Doctor blade contact check, coating blade inspection, dryer surface monitoring Weekly: Wire/felt tracking, steam trap verification, coating preparation system cleaning Monthly: Coating blade replacement (or when streaks appear), calender roll surface inspection Quarterly: Full dryer inspection, press roll cover check, coating circulation system flush Contact us for coating board...
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Complete Deinking Line for High-Grade Cultural Paper: Equipm...
Cultural Paper Production: Deinking and Refining Technology Premium cultural paper production requires advanced deinking systems and precise refining control. Writing paper, copy paper, and offset grades demand high brightness, uniform formation, and controlled surface properties. Deinking System Equipment High-Consistency Pulper: 14-18%, 40-50°C, chemical dosing for ink detachment Coarse Screening: 2.0-3.0mm holes for large contaminant removal Fine Screening: 0.15-0.25mm slots for small particles Flotation Deinking: Multi-stage cells, 0.8-1.2% consistency, 85-95% ink removal Dispersion: 80-95°C, 25-30% consistency for residual ink particle reduction Post-Flotation: 0.8-1.0% for final specks removal Disc Thickener: Concentrates to 8-12% before machine chest Refining Parameters by Grade Copy Paper (70-80 gsm): Target 35-40 °SR, SEL 1.0-1.5 J/m Offset (60-100 gsm): Target 38-45 °SR, SEL 1.2-1.8 J/m Writing/Bond (80-120 gsm): Target 40-48 °SR, SEL 1.5-2.0 J/m Energy Consumption Deinking system: 200-300 kWh/ton (flotation + dispersion + cleaning) Refining: 80-180 kWh/ton for 30-45 °SR increase Paper machine: 280-350 kWh/ton Maintenance Schedule Daily: Check flotation cell air flow, verify chemical dosing rates, monitor brightness Weekly: Inspect screen baskets, check refiner plate gap, verify disc thickener filtrate clarity Monthly: Calibrate brightness meter, check disperser disc wear, clean flotation cells Quarterly: Refiner plate inspection, screen basket replacement if slots widened >15% Contact us for...
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OCC Pulping System Optimization: Reduce Energy Costs by 20% ...
Kraft Liner Production: Equipment and Process Overview Kraft linerboard production from recycled fiber requires a carefully integrated stock preparation and paper machine system. The process converts OCC (old corrugated containers) and kraft cuttings into high-strength linerboard suitable for corrugated box manufacturing. Key Equipment Specifications A complete kraft liner production line rated at 300-600 TPD includes the following major equipment: Hydraulic Pulper: D-type design, 132-500 kW motor, pulping consistency 4-6%, batch time 15-20 minutes High-Density Cleaner: 3-4 stage cascade, inlet consistency 3-4%, reject rate below 8% Pressure Screen: 0.15-0.35mm slots, 2-stage screening, fiber recovery above 95% Double Disc Refiner: 660-910mm discs, 250-900 kW, freeness reduction 8-12 °SR per pass Paper Machine: 3200-4800mm wire width, 90-250 gsm, 350-500 m/min design speed Energy Performance Data Operating data from kraft liner mills shows the following energy benchmarks: Stock preparation power: 80-120 kWh per ton of pulp Paper machine drive power: 280-320 kWh per ton of paper Steam consumption: 1.6-1.8 tons per ton of paper (closed hood) Water usage: 8-12 m3 per ton (closed-loop recycling) These figures represent a 15-20% reduction compared to older configurations, achieved through optimized rotor designs, heat recovery, and VFD controls. Maintenance Guidelines Daily: Check lubrication levels, inspect doctor blade contact,...
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Recycled Fiber Quality Management for High-Strength Corrugat...
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...