Quality Control System

6-stage inspection from incoming material to pre-shipment. Zero critical defects is the standard — not a target.

📋 6-Stage Inspection Protocol

1

Incoming Material Inspection

Every batch of raw pulp, bagasse, and additive is tested before entering production.

  • Fiber length analysis
  • Moisture content verification
  • Contaminant screening (metal, plastic)
  • Supplier CoA cross-check
2

Pulp Slurry QC

Automated DCS system monitors and adjusts slurry consistency in real-time.

  • Consistency (concentration) ±0.3%
  • pH value monitoring
  • Additive ratio verification
  • Temperature control
3

In-Process Inspection

Sampling at 30-minute intervals from every production line.

  • Wall thickness measurement
  • Visual defect screening
  • Weight consistency check
  • Moisture content after press
4

Dimensional Audit

Precision measurement against CAD specifications using digital instruments.

  • Caliper (±0.02mm accuracy)
  • Go/No-Go gauge fitting
  • 3D scanning for complex geometries
  • Fit test with actual product
5

Performance Testing

Simulating real-world conditions to validate functional performance.

  • Drop test (ISTA 1A)
  • Compression strength
  • Vibration test
  • Water absorption (Cobb test)
  • Oil/grease resistance
6

Pre-Shipment Inspection

Final AQL sampling per ISO 2859-1 before loading.

  • AQL 2.5 (major) / AQL 0.65 (critical)
  • Color consistency under D65 lighting
  • Barcode/QR readability
  • Packaging integrity check

🧪 Testing Laboratory

In-house lab equipped for routine and specialized testing.

Cobb
Water Absorption (ISO 535)
Burst
Mullen Burst Strength (ISO 2758)
Tensile
Tensile Strength (ISO 1924)
Migration
Overall Migration (EN 1186)
Microbio
Microbiological Analysis
Color
Spectrophotometer ΔE

📐 Dimensional Tolerances

DimensionTolerance (mm)Standard
Length/Width ≤ 100mm±0.3ISO 2768-m
Length/Width 100-300mm±0.5ISO 2768-m
Length/Width > 300mm±0.8ISO 2768-m
Wall Thickness±0.15Internal
Emboss Depth±0.1Internal