1. Cross-Substrate Colour Tolerance Audit: Vella Unified Masterbatch vs. 5 Separate Vendors
| Packaging Substrate | Intrinsic Optical Challenge | 🏆 Vella Unified Masterbatch Control (ΔE ≤ 1.5) | Uncoordinated Multi-Vendor Result (ΔE 3.8–6.5) |
|---|---|---|---|
| 1. Sprayed Flint Glass Bottle / Candle Jar | High refractive index & amber/green iron tint in glass base | Opaque base-coat primer + calibrated PU matte topcoat verified under D65/TL84 | Translucent spray shifts warm/greenish compared to plastic cap |
| 2. Injection-Moulded PP / PETG Pump & Cap | Semi-crystalline PP scatters light differently than amorphous ABS/SAN | Single central pigment masterbatch compound shared across cap & actuator | Cap looks pinkish-beige while bottle looks cool taupe (metamerism) |
| 3. Anodized Aluminum Dropper / Perfume Collar | Electrolytic dye bath absorption varies with anodizing micron depth | Controlled 12–15 μm anodic layer + physical limit-sample sign-off | Brassy yellow gold collar clashes with champagne gold hot-foil logo |
| 4. 5-Layer EVOH Co-Extruded Squeeze Tube | 190–210°C extrusion barrel heat degrades organic pastel pigments | Heat-stabilized TiO₂/inorganic pigment recipe matched to glass drawdown | Tube body shifts 2 Pantone shades darker after UV varnish curing |
| 5. 350gsm Folding Carton & Rigid Gift Box | Paper whiteness (OBAs) & soft-touch lamination film shift Lab* values | Wet-ink offset drawdown measuredafter matte/soft-touch film lamination | Printer matches Pantone book before lamination; film shifts shade ΔE +2.8 |
Request Physical Bottling & Pump Compatibility Sample Kit + 24h Tiered FOB Quote (48h DHL Dispatch)
Managed directly by Alex Gao (Managing Director, Vella · Guangzhou Yanchuang Packaging Co., Ltd. · USCC 91440111MA59DBE04B · [email protected] · WhatsApp +86 139 2512 2895). Low trial MOQs (~500–1,000 pcs stock, ~2,000–3,000 pcs custom Pantone with cross-component ΔE <= 1.5), -0.08 MPa vacuum leak testing, and 30/40/30 100% client mould ownership.