Module 05: Manufacturing & Quality Assurance documents the industrial manufacturing protocols governing Gaomi Guanghe's production lines. We operate two primary soling methodologies: Direct PU Injection Carousel Molding (liquid polyol/isocyanate direct chemical reaction creating molecular upper-sole bonding exceeding 5.0 N/mm peel strength) and 360° Goodyear Welted Construction (heavy welt lock-stitching with genuine cork cavity filling and 300°C HRO nitrile rubber outsoles). Every production lot traverses our 32-Gate Physical Quality Control Gate System mapped to SATRA standards. Testing includes raw leather tensile tear verification, drop-hammer 200J impact energy on the Samsung Model 615 rig, 15kN hydraulic compression, 1,100N puncture resistance, 50,000-cycle flexing fatigue, and 15kV dielectric leakage measurement (< 1.8 mA). Pre-shipment batch release adheres strictly to ISO 2859-1 (MIL-STD-105E) AQL 1.5 Major / 2.5 Minor sampling standards.
1. 32-Gate Quality Control Flowchart
| Stage Gate | Inspection Node | Test Parameter & Standard | Rejection Criteria |
|---|---|---|---|
| Gates 1–6 (IQC) | Raw Materials Inward | Leather thickness (1.8–2.0mm), toe cap 200J batch cert, Kevlar 1100N | Any batch flaw > 0.5% |
| Gates 7–14 (IPQC) | Cutting & Stitching | Stitch density (4–5 stitches/cm), needle heat control, lasting tension | Skewed lasting > 1.5mm |
| Gates 15–24 (Soling) | PU Injection / Welt | Injection mold temperature (55°C), peel strength ≥ 4.0 N/mm, sole trim | Bubble void > 2mm, peel < 4N |
| Gates 25–32 (FQC/OQC) | Final Inspection & Lab | 200J drop-hammer impact, 15kN press, SR slip resistance, carton drop | Any structural failure = lot held |
Consult with Gaomi Guanghe's Footwear Engineering Desk
Contact our technical director for custom ASTM/CE test reports, 20GP/40HQ container freight simulation, or rapid 5-day counter-sampling.