Quality Control Report for Wooden Wardrobes
Origin: China | Destination: Australia
1. Raw Materials and Quality Specifications
Wooden wardrobes are manufactured using carefully selected materials to ensure structural integrity, aesthetics, and compliance with Australian standards.
A. Solid Wood and Engineered Wood Components
- Solid Wood:
- Types: Hardwoods (e.g., oak, birch) or sustainable softwoods (e.g., pine, cedar).
- Quality Requirements:
- Moisture content: 8โ12% (measured by pin-type moisture meters).
- Defect tolerance: No live knots >5 mm, cracks, or insect damage.
- Engineered Wood:
- Types: Medium-density fiberboard (MDF), plywood, or particleboard.
- Quality Requirements:
- Density: MDF โฅ 700 kg/mยณ (EN 622-1).
- Formaldehyde emissions: โค0.05 ppm (CARB Phase 2 or AS/NZS 1859.3 compliant).
B. Surface Coatings and Finishes
- Common Treatments:
- Paint Finishes: Water-based acrylic or polyurethane coatings.
- Veneers: Thin hardwood veneers (0.6โ1.5 mm) bonded with E0-grade adhesives.
- Laminates: High-pressure melamine films for scratch resistance.
- Quality Requirements:
- Adhesion strength: โฅ3.5 MPa (ASTM D3359).
- Gloss uniformity: ยฑ5 GU within a batch.
C. Hardware and Accessories
- Hinges and Drawer Slides: Zinc-alloy or stainless steel with anti-corrosion treatment.
- Handles and Knobs: Brass or powder-coated aluminum.
- Quality Requirements:
- Load capacity: Drawer slides โฅ25 kg (EN 16122).
- Corrosion resistance: Pass 48-hour salt spray test (ASTM B117).
2. Production Process and Critical Control Points
A. Material Preparation
- Wood Drying: Kiln-dried to 8โ12% moisture content; stored in climate-controlled warehouses.
- Panel Cutting: CNC machines cut components with ยฑ0.5 mm dimensional tolerance.
B. Assembly Process
- Frame Construction: Dowel-pin or cam-lock systems for joint stability.
- Adhesive Application: PVA or PUR adhesives applied evenly; excess glue removed to prevent staining.
- Hardware Installation: Hinges and slides aligned using laser-guided tools.
C. Surface Finishing
- Sanding: Automated sanders (180โ220 grit) ensure smooth surfaces.
- Coating Application: Spray guns apply 2โ3 primer layers and 2 topcoat layers.
- Curing: UV or thermal curing for scratch and moisture resistance.
3. Quality Inspection Standards and Methods
A. Structural Integrity Tests
- Stability Test: Wardrobe subjected to 50 kg lateral load; tilt โค1ยฐ (AS/NZS 4935).
- Drawer Durability: 10,000 open-close cycles; no misalignment or noise.
B. Surface Quality Inspection
- Visual Inspection: Checked under 500-lux LED light for scratches, bubbles, or color mismatch.
- Coating Thickness: Measured via ultrasonic gauges (target: 80โ120 ฮผm).
C. Safety and Compliance
- Formaldehyde Testing: Chamber method per AS/NZS 4266.15; โค0.05 ppm.
- Edge Sharpness: Rounded edges (radius โฅ2 mm) to meet Australian Child Safety Standards.
4. Common Defects and Acceptance Criteria
A. Aesthetic Defects
- Minor Defects: Slight color variation (โค5% of units per batch).
- Major Defects: Visible cracks, peeling coatings, or misaligned hardware (โค1.5% rejection rate).
B. Functional Defects
- Structural Weakness: Joint separation under load testing (โค0.3% rejection).
- Hardware Failure: Hinge loosening or drawer jamming (โค1% tolerance).
C. Overall Yield: 98% of production meets export standards after rework.
5. Packaging and Containerization Guidelines
A. Packaging Specifications
- Inner Packaging:
- Foam corner protectors and air cushion film to prevent scratches.
- Silica gel packets (10g/mยณ) to control humidity.
- Outer Cartons: 5-ply corrugated boxes with reinforced edges.
- Labeling: Includes SKU, assembly instructions, and โFragile โ Keep Dryโ warnings.
B. Container Loading Protocol
- Palletization: Components stacked on EUR pallets (1200ร800 mm), height โค1.5 m.
- Weight Distribution: Max 18 tons per 40HQ container to avoid floor stress.
- Securement: Steel strapping and anti-slip mats between pallets.
- Ventilation: Leave 15 cm gaps for air circulation; avoid direct contact with container walls.
C. Critical Precautions
- Pest Control: Wood packaging must comply with ISPM 15 (heat-treated and stamped).
- Documentation: Include FSC/PEFC certificates, fumigation reports, and compliance declarations.
- Pre-Shipment Inspection: Third-party verification (e.g., SGS) for 10% of randomly selected units.
This report ensures that wooden wardrobes manufactured in China adhere to Australiaโs rigorous quality, safety, and environmental standards. By prioritizing material sustainability, precise craftsmanship, and defect minimization, the products meet both regulatory requirements and consumer expectations.
