Factory Audit Report: White Primed Finger Joint Pine Mouldings
Location: Ho Chi Minh City, Vietnam
Audit Date: June 5, 2025
Auditee: [Confidential – Redacted per NDA]
1. Production Process of Finger Joint Pine Mouldings
1.1 Raw Material Preparation & Grading
- Timber Selection:
- Kiln-dried Pinus spp. (moisture content 8–12%) is sourced from certified plantations (FSC/PEFC preferred).
- Logs are graded by:
- A/B Grade: Clear, straight grain; minimal knots; no wane or decay.
- C/D Grade: Allow small tight knots; limited sapwood; used for non-visible sections.
- Pre-processing:
- Rough lumber is cross-cut to remove defects and trimmed to required lengths.
- Boards are planed to uniform thickness (e.g., 19mm, 25mm) and width.
1.2 Finger Jointing Process
- End Trimming: Boards are precision-cut to remove uneven ends.
- Finger Joint Cutting: CNC machines create interlocking profiles (finger lengths: 10–15mm; pitch: 4–6mm).
- Gluing & Clamping:
- PU-based adhesive (e.g., DYNEA or JOWAT) applied evenly.
- Hydraulic clamps (pressure: 100–150 psi) cure joints for 10–15 minutes.
- Trimming & Sanding: Jointed blanks are trimmed to final length and belt-sanded (80→120 grit).
1.3 Priming & Finishing
- Primer Application:
- Water-based acrylic primer sprayed (DFT: 0.1–0.2mm).
- UV-cured or air-dried (24hrs at 25°C/50% RH).
- Quality Check: Coating adhesion tested via cross-hatch test (ASTM D3359).
2. Quality Control Points & Common Defects
2.1 In-Process QC
| Stage | Checkpoints | Common Defects |
|---|---|---|
| Raw Material | Moisture content, knot size, straightness | Wet lumber, excessive sapwood |
| Finger Jointing | Joint alignment, glue squeeze-out | Weak joints, gaps >0.5mm, adhesive voids |
| Sanding | Surface smoothness (Ra ≤3.2µm) | Scratches, uneven edges |
| Priming | Coverage, adhesion, drying | Blistering, orange peel, dry spray |
2.2 Final Inspection
- Dimensional Tolerance: ±0.5mm (length), ±0.2mm (thickness/width).
- Visual Standards: No open knots, cracks, or unprimed areas.
3. Laboratory Testing Requirements
- Physical Tests:
- MOE/MOR: ASTM D143 (min. MOE: 8,000 MPa; MOR: 40 MPa).
- Joint Strength: EN 204/205 (min. 12 N/mm²).
- Finish Tests:
- Adhesion: Cross-cut tape test (Class 1B or better).
- Humidity Resistance: 48hrs at 38°C/95% RH (no delamination).
4. Factory Background & Compliance
4.1 Market & Client Profile
- Primary Export Markets: USA (80%), EU (15%), Japan (5%).
- Key Clients: Major US importers of architectural millwork (confidential per NDA).
4.2 Certifications Verified
- Mandatory: FSC Chain-of-Custody, CARB Phase 2, ISO 9001:2015.
- Optional: EPA TSCA Title VI (formaldehyde compliance).
4.3 Social & Environmental Compliance
- Audit Points:
- No child labor (verified via payroll records).
- VOC emissions compliant with EPA 40 CFR Part 63.
5. Audit Conclusion
The factory demonstrated robust process control and met 92% of the client’s audit checklist requirements. Minor non-conformities (e.g., glue application consistency) were addressed with corrective actions.
Prepared by: [Your Company Name] Sourcing & QC Team
Submission Date: [Confidential]
Note: All proprietary factory details are withheld per the NDA with the US client.
