1. Raw Material Processing  

   Fir logs are debarked and chipped into 30-50mm flakes, with moisture content reduced below 15%.  

   Flakes are screened and washed to remove impurities.  

2. Particle Preparation  

   Flakes are processed into particles (20-40mm long, 0.2-0.5mm thick) via ring flakers.  

   Rotary dryers reduce moisture to 3%-5%.  

3. Blending & Gluing  

   E1/E0 urea-formaldehyde resin (8%-12% dosage) is uniformly coated on particles using high-speed blenders (800-1200 rpm).  

   Waterproofing agent (1%-1.5% wax emulsion) and catalyst (0.5%-1% ammonium chloride) are added.  

4. Forming & Pre-pressing  

   Mechanical formers create a graduated structure (fine surface/coarse core particles).  

  Continuous pre-presses apply 1.5-2.5 MPa for initial shaping.  

5. Hot Pressing  

   Multi-opening presses (8-12 layers) cure the board at 180-210℃ and 25-30 MPa for 4-6 minutes.  

   Thickness is precisely controlled at 18±0.2mm.  

6. Finishing  

   Trimming to standard sizes (e.g., 1220×2440mm).  

   Stack cooling for 24 hours to equilibrate moisture (6%-8%).  

   Double-side sanding (0.2-0.3mm removal) ensures surface flatness (≤0.1mm).  

II. Key Equipment  

Section	Equipment	Parameters
Raw Material	Drum debarker, Chipper	Capacity ≥50 t/h
Particle Prep	Ring flaker, Triple-pass dryer	Drying temp. 160-180℃
Gluing	High-speed blender	Glue droplet size ≤50μm
Forming	Mechanical former	Forming accuracy ±5g/m²
Pressing	8-opening hot press	Total pressure 3000-4000t
Finishing	Cross-cut saw, 4-head sander	Sanding grit P80-P120

chipper machine

wood flaker machine

drying system

gluing mixer system

mar forming machine

continuous hot press

cross-cut saw

double-sided four-frame sander

III. Technical Specifications   

Capacity: 250,000 m³/year (758 m³/day @ 330 operating days)  

Board Specs: Thickness 18±0.3mm, Density 650-720 kg/m³  

Emission Class: GB/T 4897-2015 E1 (formaldehyde ≤0.124 mg/m³)  

Physical Properties:  

  MOR ≥16 MPa  

  IB ≥0.45 MPa  

  24h Thickness Swelling ≤8%  

IV. Fir Wood  

Advantages

1. Fiber Quality: Optimal length-to-width ratio (30-50:1) enhances interlocking strength.  

2. Low Resin Content: <3% resin minimizes press plate contamination.  

3. Processability: Softer texture reduces chipping energy by 20%-30% vs. hardwoods.  

4. Sustainability: costing 10%-15% less than pine.  

Global production areas

1.Japan

Sugi (Cryptomeria japonica): 45% of Japan's planted forests, mainly in Kyushu/Shikoku, annual yield ~10 million m³.

Traits: Fast growth (40-50yr rotation), low density, resin content <2.5%.

2.North America

Douglas Fir (Pseudotsuga menziesii): Grown in BC (Canada) and Pacific NW (USA), similar industrial use.

Traits: Fiber length 3-4mm, superior strength but higher resin (4%-6%).

3.Southeast Asia

Vietnam/Laos: Wild fir (Cunninghamia spp.) in northern mountains (e.g., Hoang Lien Son), limited output.

Myanmar: Small-scale plantations in Kachin State, minimal commercial supply.

4.South America (Introduced species)

Chile: Radiata pine replaces fir with 20-25yr growth cycle, requires softening pre-treatment.

Key Data Comparison

Region	Species	Annual Supply	Fiber Properties
Japan	Sugi	10 million m³	Length/width ratio 35-40:1
N.America	Douglas Fir	65 million m³	Fiber length 3-4mm, high stiffness
Chile	Radiata Pine	55 million m³	Short fiber (1-2mm), dense

V. Board Structure Characteristics  

Layered Composition:  

  Surface: 0.2-0.3mm fine particles for smooth finishing.  

  Transition: 0.5-1mm medium particles enhancing layer bonding.  

  Core: 1-2mm coarse particles providing flexural rigidity.  

Performance:  

  Natural fir toughness improves impact resistance by 12%-18%.  

  Low resin content reduces "glue spots", achieving post-sanding Ra≤3.2μm.  

VI. Applications   

1.Furniture Manufacturing (>60% share)

Flat-pack furniture: Cabinet panels/shelves (load-bearing ≤30kg/m²), optimal strength-to-weight ratio.

Office furniture: Laminate-topped desks, ±0.3mm thickness tolerance ensures seam flatness.

2.Construction

Drywall partitions: Fills steel stud frames, 28-32dB sound insulation (5-8dB better than 15mm board).

Subflooring: Over concrete base, MOR≥16MPa prevents deflection.

3.Industrial Packaging

Heavy-duty pallets: Static load ≥1,500kg, dynamic load ≥500kg (ISO 8611 compliant).

Machine guards: 20% higher impact resistance than MDF, 60% cost savings vs plywood.

4.Customized Uses

Acoustic panels: Perforated boards (6-8mm holes, 8%-12% open area) for sound absorption.

Container flooring: CSC-certified, replaces bamboo/wood with anti-slip coating.