① Raw Material Processing

- Wood Breakdown:  

 Debarker → Chipper (30×30mm chips) → Drum screening (removes soil/metals)  

- Fiber Separation:  

 Steam preheating (170°C/0.8MPa) → Defibrator refining (disc gap 0.1-0.2mm, fiber L/D ratio >80:1)  

② Fiber Treatment

 Resin Application:  

 Melamine-modified UF resin (52% solids) + 0.8% wax emulsion → Spray application (10-12% of oven-dry fiber weight)  

 Drying:  

 Pulsed-air dryer (inlet 180°C → outlet 65°C), moisture content controlled to 8-9%  

③ Mat Forming  

 Mechanical Forming:  

 Leveling rollers + oriented forming heads create density gradient (fine surface fibers / coarse core fibers)  

 Pre-pressing:  

 Continuous belt pre-press (pressure gradient: 0→3.5MPa), compression ratio 1:2.8  

④ Hot Pressing

⑤ Post-Processing  

- Staged Cooling:  

 Multi-section roller cooling (80°C→45°C) eliminates thermal stress  

- Humidity Conditioning:  

 Mist humidification chamber (RH 45%) for 24 hours  

- Precision Sanding:  

 7-head sanding line (80→240 grit), removes 0.3-0.5mm pre-cured layer  

Ⅲ. Core Equipment Configuration  

① Fiber Preparation System  

 Defibrator: 54-inch grinding discs (2500kW power), freeness 18-22°SR  

 Resin Blending: High-pressure atomizing nozzles (droplet size ≤50μm)  

fiber cooking and refining systems for MDF

gluing system

② Forming & Pressing System  

 Forming Line:  

 Air-mechanical forming head (mat thickness accuracy ±7%)  

 Continuous Flat Press:  

 30-zone hydraulic control (pressure fluctuation <±0.3MPa), platen temp. variation ≤±2°C  

mat forming machine

continuous hot press line

③ Finishing System

 Cooling Star: 8-tier turnover system (cooling capacity ≥1200㎡/h)  

 Sanding Line:  

 Calibrating heads (2 sets) + Finishing heads (5 sets), removal accuracy ±0.05mm  

Dryer rack

high density fiberboard sanding machine

④ Intelligent Control System  

 DCS: Real-time monitoring of fiber moisture (±0.5%), press temp. (±1.5°C)  

 QA Instruments: Online X-ray densitometer (0.5% res.), laser thickness scanner  

Shandong MingHung OSB&MDF Machinery Equipment is a China professional factory who specilize in manufacturering and offering Wood based panel machine, including OSB making machine, MDF making machine, and Chipboard /PB making machine.

The machines we can offer includes: Wood chipper, Ring flaker, Strander, Wet silo,  Drum dryer, Dry silo, Glue dosing and applying system /Glue blender, Mat forming, Continuous Multi-rolls pre-press, Multi opening hot press and Continuous press, Auto edge cutting machine line, Sanding machine line, kinds of related belt conveyor and so on.