I. Raw Material Preparation Section Equipment

1. Raw Material Handling System

Chipper

Type: Drum chipper or disc chipper

Power: 200-500 kW

Capacity: Processes logs, small-diameter wood, branches, wood processing residues

Features: Hydraulic feeding system, adjustable chip thickness (15-35mm), equipped with overload protection

Output Specification: Uniform wood chip size (20-30mm long, 15-25mm wide, 3-5mm thick)

Screening and Washing System

Vibrating Screen: Multi-layer screen (aperture 15mm, 30mm, 50mm) to separate qualified chips, oversized chips, and fines

Washer: Removes sand, metal impurities, and adjusts moisture content

Circulating Water Treatment System: Settling tank, filtration unit, water recycling

2. Chip Storage and Conveying System

Silo System

Live-bottom Silo: Capacity 50-200 m³, stainless steel material

Discharge Device: Rotary valve or screw discharger

Conveying System:

  Belt conveyor: Horizontal conveying, belt width 800-1200mm

  Bucket elevator: Vertical lifting, height 15-25m

  Scraper conveyor: Enclosed conveying, dust-proof design

II. Fiber Preparation Section Equipment

Refiner (Fiber Separation Equipment)

Disc Diameter: 42", 48", 54", 58" (1067-1473mm)

Main Motor Power: 3000-8000 kW

Disc Gap: Adjustable 0.1-0.3mm

Disc Plate Material: Special alloy steel, service life 800-1200 hours

Capacity: Corresponds to line capacity, e.g., 54" disc corresponds to 8-10 tons/hour oven-dry fiber

Control System: Constant power control, Automatic disc gap adjustment,Vibration monitoring and protection, Lubrication system monitoring

Resin Blending System

Blender Type: High-speed centrifugal blender or pneumatic atomization blender

Blending Accuracy: ±1.5%

Resin Application Range: 8-15% (solid resin/oven-dry fiber)

Mixing Method: Instant mixing of fiber and resin in high-speed airflow

Control System: Flow meter precise metering, Temperature control (20-40°C),Automatic cleaning function

Additive System

Wax Emulsion Addition: Water repellent, dosage 0.5-1.5%

Hardener Addition: Ammonium chloride, etc., to adjust curing time

Other Additives: Optional flame retardants, anti-fungal agents, etc.

Drying Pipeline System

Type: Three-stage or four-stage pulsed airflow drying pipeline

Length: 60-100 meters

Diameter: 1000-1800mm

Drying Medium: Hot flue gas, temperature 160-220°C

Retention Time: 3-6 seconds

Outlet Fiber Moisture Content: Adjustable 8-12%

Safety System: Spark detection and extinguishing system,Explosion venting device,Multi-point temperature monitoring

Hot Air Furnace System

Type: Biomass, natural gas, or dual-fuel (oil/gas)

Thermal Power: 10-30 MW

Thermal Efficiency: ≥85%

Emissions: Complies with environmental standards, optional flue gas treatment

Drying Cyclone Separator

Separation Efficiency: ≥99%

Fiber Recovery: Two-stage cyclone + bag filter

Humidity Exhaust System: Moist air exhaust, heat recovery

III. Forming and Pre-pressing Section Equipment

Forming Head

Type Selection:

  Mechanical forming head: Suitable for standard density boards

  Airflow forming head: Suitable for low-density or ultra-thin boards

  Mechanical-airflow composite forming: Preferred for high-quality furniture boards

Forming Accuracy: Density deviation ≤ ±2.5%

Forming Speed: Adjustable 5-30 m/min

Forming Width: 1300-2600mm (corresponding to finished board width 1220-2440mm)

Pre-press

Type: Continuous belt pre-press or roller pre-press

Pressure: 5-15 MPa

Compression Ratio: 3:1 to 5:1

Function: Initial compaction, air removal, increases mat strength for transportation

Mat Cross-cut Saw

Type: High-speed flying saw or band saw

Cutting Length: Adjustable according to orders, typically multiples of finished board length

Cutting Accuracy: Length tolerance ±2mm

Control: Synchronized with production line speed

IV. Hot Pressing Section Equipment (Core Section)

Continuous Flat Press (Standard for Modern Lines)

Type: Double steel belt continuous flat press

Manufacturers: Dieffenbacher, Siempelkamp, or equivalent domestic equipment

Working Principle: Mat is continuously heated and pressed between two endless steel belts

Main Components and Technical Parameters

Control System Features

Programmable pressure profile control (for different thicknesses, densities)

Precise segmented temperature control

Automatic thickness measurement and feedback control

Automatic steel belt tension and tracking adjustment

Automatic lubrication system control

Fault diagnosis and alarm system

Advantages

More uniform board density distribution

Excellent surface quality, reduced sanding allowance

Precise thickness control (tolerance ±0.2mm)

High thermal energy utilization, 15-20% energy saving

Continuous production, high efficiency

V. Post-processing Section Equipment

1. Cooling and Conditioning Treatment

Cooling and Turnover Device

Cooling Method: Forced air cooling, adjustable air speed

Cooling Time: 20-40 minutes (board thickness dependent)

Turnover Function: Relieves internal stress, prevents warping

Temperature Control: Cools to below 50°C

2. Trimming and Size Cutting

Cross and Longitudinal Cutting System

Rip Saw: Multi-saw blade combination, adjustable width

Cross-cut Saw: Electronic positioning, servo drive

Cutting Accuracy: Size tolerance ±1mm, diagonal tolerance ±2mm

Edge Trim Handling: Shredded and recycled back to production line

3. Sanding System

Calibrating Sander

Sanding Head Configuration: Combination of 4-8 sanding heads

Sanding Belt Specification: Width 1350-2650mm

Sanding Accuracy: Thickness tolerance ±0.1mm

Surface Quality: Ra ≤ 2.5μm

Dust Collection System: High-efficiency bag filter, recovers sander dust

4. Inspection and Stacking/Packaging

Automatic Inspection System

Thickness Detection: Laser scanning, full board surface inspection

Defect Detection: Vision system identifies spots, dents, delamination, etc.

Density Detection: Online densitometer, spot-check or full inspection

Automatic Stacker

Stacking Method: Robotic arm or vacuum suction cups

Stacking Accuracy: Alignment tolerance ±3mm

Sticker Placement: Automatic placement, adjustable spacing

Flipping Function: Configurable board face up or down

Packaging System

Automatic Strapping Machine: PET or steel strap strapping

Protective Packaging: Edge protectors, moisture barrier film, labels

1. Q: What is the delivery time for the production line?

  A: Typically 6-12 months, depending on line scale and customization level.

2. Q: What is the energy consumption of the equipment?

  A: Our energy-saving design reduces consumption by 15-20% compared to traditional equipment, with detailed energy analysis reports provided.

3. Q: What thicknesses of MDF can be produced?

  A: Boards from 2.5-40mm thickness can be produced, with quick and easy thickness adjustments.

4. Q: What is the automation level of the production line?

  A: Fully automated control system minimizes manual intervention, with optional intelligent production management systems.

5. Q: Do you provide installation and technical training?

  A: Yes, we provide comprehensive installation guidance, commissioning services, and operation/maintenance training.

6. Q: Is equipment maintenance complicated?

  A: Designed for easy maintenance with detailed manuals and remote technical support.

7. Q: Can multiple raw materials be used?

  A: Compatible with various fiber materials including wood, bamboo, and agricultural residues.