Product: Green Plastic Polypropylene (PP) Film Faced Plywood Inspection Date: [Insert Date] Inspector: [Inspector Name] Batch No.: [Batch Number]
1. Common Processing Defects in Film Faced Plywood
Defect Type
Description
Acceptance Criteria
Delamination
Separation between veneer layers due to poor adhesive bonding.
No visible delamination
Bubbles/Wrinkles
Air trapped under PP film or uneven film application.
Smooth, bubble-free surface
Scratches/Cuts
Surface damage due to improper handling or machining.
No deep scratches (>0.2mm)
Edge Splitting
Cracks or splits at the edges due to poor sealing or cutting.
No splits >3mm in length
Uneven Coating
Inconsistent PP film thickness or coverage.
Uniform coating (≤±5% variation)
Discoloration
Color inconsistency due to poor film quality or UV exposure.
Uniform green color (ΔE ≤1.5)
Warping/Twisting
Deformation due to improper drying or storage.
Flatness ≤2mm/m²
2. Plywood Laboratory Test Data
Test Item
Test Method (Standard)
Test Result
Requirement
Moisture Content
ISO 3130
8-12%
≤14%
Density (kg/m³)
ISO 3131
600-750
≥550
Bending Strength (MPa)
EN 310
≥30
≥25
Elastic Modulus (MPa)
EN 310
≥4,500
≥4,000
Glue Bond Strength (MPa)
EN 314-2
≥1.0
≥0.8
Formaldehyde Emission
EN 717-1 (E1 Standard)
≤0.124 mg/m³
≤0.124 mg/m³
Thickness Tolerance (mm)
ISO 3039
±0.3
±0.5
3. Polypropylene (PP) Film Testing & Defects
3.1 PP Film Test Methods & Data
Test Item
Test Method (Standard)
Test Result
Requirement
Thickness (μm)
ISO 4593
120-150 μm
≥100 μm
Tensile Strength (MPa)
ISO 527-3
≥25
≥20
Elongation at Break (%)
ISO 527-3
≥300%
≥250%
Peel Strength (N/mm)
ASTM D903
≥2.5
≥2.0
UV Resistance
ASTM G154 (500h test)
No cracking
No degradation
Heat Resistance (°C)
ISO 306 (Vicat Softening)
≥110°C
≥100°C
3.2 Common PP Film Defects
Defect Type
Description
Acceptance Criteria
Film Peeling
Poor adhesion between PP film and plywood.
No peeling after tape test
Pinholes
Microscopic holes due to manufacturing flaws.
≤3 pinholes/m²
Contamination
Foreign particles embedded in film.
No visible impurities
Uneven Thickness
Inconsistent film coating.
±5% tolerance
Color Fading
Loss of green color due to poor dyeing.
ΔE ≤1.5 after UV test
4. Conclusion
The inspected Green Plastic PP Film Faced Plywood meets the required standards for both plywood core quality and PP film performance. Minor defects (if any) should be addressed before shipment.
