MH-OSB
MINGHUNG
1. Raw Material Adaptation
Poplar Characteristics: Low density (0.4-0.5 g/cm³), short fibers, high bark content → Enhanced pretreatment:
Debarking rate ≥95% (High-efficiency drum debarker)
Moisture control: Pre-dry chips to 25-30% before drying system
Strand Geometry: Surface layer aspect ratio 1:3 (60×20mm); core layer slightly larger to reduce resin usage
2. Directional Particleboard Production Process
2.1 Raw Material Preparation
Debarking: Poplar logs processed through drum debarker (efficiency ≥95%)
Stranding: Twin-drum strander cuts wood into 60×20mm oriented strands
Screening: 3-deck vibrating screen classifies strands, removes <1mm fines (>90% efficiency)
Washing: Removes soil impurities (for high-bark-content feedstock)
2.2 Drying
Pre-drying: Air-drying or low-temperature airflow drying to 25-30% MC
Core drying: Triple-pass drum dryer (inlet 180°C), final MC 3-5%
Exhaust treatment: Cyclone separation + RTO incineration (VOCs removal >98%)
2.3 Resin Blending & Additives
Resin application: High-pressure atomization sprays PMDI resin (surface 8-9%, core 5-6%)
Additives: 0.3% wax (core layer waterproofing) + nanocellulose (resin efficiency booster)
Mixing: Rotary blender ensures homogeneity (mixing time ≥180s)
2.4 Oriented Forming
Layered forming: Mechanical + pneumatic forming system
Surface layer: Strands oriented parallel to production line (deviation <5°)
Core layer: Cross-oriented perpendicular to line
Line speed: ≥100 m/min (mat density variation ±3%)
2.5 Hot Pressing
Pre-pressing: Continuous belt pre-press (0.5MPa for initial mat consolidation)
Main pressing: Continuous flat-line press (200-220°C, 3.5-4.0MPa, 3-5min dwell time)
Steel belt treatment: Teflon coating + laser cleaning system
2.6 Finishing
Cooling: Mist cooling system (reduce temperature to ≤45°C, duration ≥30min)
Trimming: Double-end trim saw (width tolerance ±0.5mm)
Sanding: Calibrating sander (removal 0.2-0.3mm, surface roughness Ra≤3μm)
2.7 Grading & Packaging
Quality control: X-ray density scanner + mechanical testing (EN 300 standard)
Grading: Classified as OSB/2 (general purpose) or OSB/3 (load-bearing)
Packaging: Auto-stretch wrapping (moisture barrier film + steel strapping)
3. Key Equipment Specifications
Section | Requirements | Technical Parameters |
Raw Material Prep | Twin-drum stranders + 3-deck vibrating screen (>90% <1mm fines removal) | Capacity ≥40 m³/h (redundancy) |
Drying | Triple-pass drum dryer (anti-curling for poplar) | Input MC 30% → Output 3-5% |
Resin Blending | High-pressure atomization (PMDI resin) | Surface: 8-9%; Core: 5-6% |
Forming | Mechanical + pneumatic forming (orientation deviation <5°) | Line speed ≥100 m/min |
Pressing | Continuous press (anti-adhesion steel belt) | Press length ≥30m, pressure 3.5-4.0 MPa |
Finishing | 24-blade cross-cut saw + mist cooling | Cooling ≥30min (≤45℃) |
4. Energy Optimization
Drying heat: 40% from sanding dust/bark gasification (CV ≥8 MJ/kg)
Press waste heat recovery: Pre-heats strands → Reduces drying energy by 15-20%
1. Material Optimization
Poplar ≥80% (eucalyptus/pine core blend)
Bark/sawdust fuel replaces natural gas → 35% fuel cost reduction
Sourcing radius ≤150 km (transport ≤80 CNY/ton)
2. Resin Reduction
Nanocellulose additive in PMDI (1:0.3 ratio) → 12% less resin
Electrostatic spraying for surface resin (92% utilization)
Emissions: RTO incineration for dryer exhaust (VOCs removal >98%)
Zero liquid discharge: Closed-loop resin system + condensate recovery
Certifications:
GB/T 35601-2017 (OSB/3 grade)
EN 300 (EXPOSURE CLASS 2)
CARB Phase 2 (formaldehyde ≤0.05 ppm)
Different clients may use different raw materials as their local resource, such as rice husk, bagasse, palm tree, eucaltptus, bamboo, pine and others, it will affect some machinery be different. In addition, the choice of machinery is also related to the thickness of the panel, the type of glue, the capacity, etc. So after know your own conditions, our team can design a suitable quotation for you.
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
1. Raw Material Adaptation
Poplar Characteristics: Low density (0.4-0.5 g/cm³), short fibers, high bark content → Enhanced pretreatment:
Debarking rate ≥95% (High-efficiency drum debarker)
Moisture control: Pre-dry chips to 25-30% before drying system
Strand Geometry: Surface layer aspect ratio 1:3 (60×20mm); core layer slightly larger to reduce resin usage
2. Directional Particleboard Production Process
2.1 Raw Material Preparation
Debarking: Poplar logs processed through drum debarker (efficiency ≥95%)
Stranding: Twin-drum strander cuts wood into 60×20mm oriented strands
Screening: 3-deck vibrating screen classifies strands, removes <1mm fines (>90% efficiency)
Washing: Removes soil impurities (for high-bark-content feedstock)
2.2 Drying
Pre-drying: Air-drying or low-temperature airflow drying to 25-30% MC
Core drying: Triple-pass drum dryer (inlet 180°C), final MC 3-5%
Exhaust treatment: Cyclone separation + RTO incineration (VOCs removal >98%)
2.3 Resin Blending & Additives
Resin application: High-pressure atomization sprays PMDI resin (surface 8-9%, core 5-6%)
Additives: 0.3% wax (core layer waterproofing) + nanocellulose (resin efficiency booster)
Mixing: Rotary blender ensures homogeneity (mixing time ≥180s)
2.4 Oriented Forming
Layered forming: Mechanical + pneumatic forming system
Surface layer: Strands oriented parallel to production line (deviation <5°)
Core layer: Cross-oriented perpendicular to line
Line speed: ≥100 m/min (mat density variation ±3%)
2.5 Hot Pressing
Pre-pressing: Continuous belt pre-press (0.5MPa for initial mat consolidation)
Main pressing: Continuous flat-line press (200-220°C, 3.5-4.0MPa, 3-5min dwell time)
Steel belt treatment: Teflon coating + laser cleaning system
2.6 Finishing
Cooling: Mist cooling system (reduce temperature to ≤45°C, duration ≥30min)
Trimming: Double-end trim saw (width tolerance ±0.5mm)
Sanding: Calibrating sander (removal 0.2-0.3mm, surface roughness Ra≤3μm)
2.7 Grading & Packaging
Quality control: X-ray density scanner + mechanical testing (EN 300 standard)
Grading: Classified as OSB/2 (general purpose) or OSB/3 (load-bearing)
Packaging: Auto-stretch wrapping (moisture barrier film + steel strapping)
3. Key Equipment Specifications
Section | Requirements | Technical Parameters |
Raw Material Prep | Twin-drum stranders + 3-deck vibrating screen (>90% <1mm fines removal) | Capacity ≥40 m³/h (redundancy) |
Drying | Triple-pass drum dryer (anti-curling for poplar) | Input MC 30% → Output 3-5% |
Resin Blending | High-pressure atomization (PMDI resin) | Surface: 8-9%; Core: 5-6% |
Forming | Mechanical + pneumatic forming (orientation deviation <5°) | Line speed ≥100 m/min |
Pressing | Continuous press (anti-adhesion steel belt) | Press length ≥30m, pressure 3.5-4.0 MPa |
Finishing | 24-blade cross-cut saw + mist cooling | Cooling ≥30min (≤45℃) |
4. Energy Optimization
Drying heat: 40% from sanding dust/bark gasification (CV ≥8 MJ/kg)
Press waste heat recovery: Pre-heats strands → Reduces drying energy by 15-20%
1. Material Optimization
Poplar ≥80% (eucalyptus/pine core blend)
Bark/sawdust fuel replaces natural gas → 35% fuel cost reduction
Sourcing radius ≤150 km (transport ≤80 CNY/ton)
2. Resin Reduction
Nanocellulose additive in PMDI (1:0.3 ratio) → 12% less resin
Electrostatic spraying for surface resin (92% utilization)
Emissions: RTO incineration for dryer exhaust (VOCs removal >98%)
Zero liquid discharge: Closed-loop resin system + condensate recovery
Certifications:
GB/T 35601-2017 (OSB/3 grade)
EN 300 (EXPOSURE CLASS 2)
CARB Phase 2 (formaldehyde ≤0.05 ppm)
Different clients may use different raw materials as their local resource, such as rice husk, bagasse, palm tree, eucaltptus, bamboo, pine and others, it will affect some machinery be different. In addition, the choice of machinery is also related to the thickness of the panel, the type of glue, the capacity, etc. So after know your own conditions, our team can design a suitable quotation for you.
Claim Your Free OSB Line Layout! Get end-to-end plant design from strand preparation to sanding. Receive 3D factory plan within 30 days.
Our contacts:
Whatsapp: +8618769900191 +8615589105786 +8618954906501
Email: osbmdfmachinery@gmail.com
