Understand What Anti-Fingerprint PPGI Really Is
Anti-fingerprint PPGI is a prepainted galvanized or galvalume steel coil with a nano-level transparent coating that:
Prevents fingerprints & oil stains
Improves corrosion resistance
Enhances surface aesthetics & cleanability
👉 Typical structure:
Top: AFP coating + paint + primer
Middle: Zinc / Al-Zn coating
Base: Cold-rolled steel
Key Factors to Choose Anti-Fingerprint PPGI Coil
① Application Scenario (Most Important)
Different applications = different specs:
| Application | Recommended Specs |
|---|---|
| Home appliances (fridge, washing machine) | High gloss control, smooth AFP coating |
| Building facade / roofing | High corrosion resistance (Z150–Z275 / AZ150) |
| Elevator panels / interiors | Matte AFP, high scratch resistance |
| Electronics / cabinets | Thin coating + high formability |
👉 Anti-fingerprint coils are widely used in high-touch surfaces where cleanliness and appearance matter
Substrate Type (GI vs GL)
Choose base material carefully:
GI (Galvanized Steel)
Lower cost
Suitable for indoor / normal environment
GL / Aluzinc (55% Al-Zn)
Better corrosion resistance (2–4× GI)
Recommended for outdoor / coastal use
👉 Export tip:
Southeast Asia / Middle East → Prefer GL (AZ coating)
Coating System (Core Technology)
AFP performance depends on coating type:
| Coating Type | Performance |
|---|---|
| PE (Polyester) | Standard, economical |
| SMP | Better weather resistance |
| HDP | High durability |
| PVDF | Premium, best UV resistance |
👉 AFP layer is usually nano-ceramic or organic film (1–2μm)
✔ Recommendation:
High-end projects → PVDF + AFP
General appliances → PE/SMP + AFP
Anti-Fingerprint Performance
Check real test data:
Fingerprint resistance: ≥ 5000 rub cycles
No visible marks / ΔE < 1.0
Easy cleaning (oil-repellent surface)
👉 Key question to supplier:
"Provide ISO 11998 test report?"
Coating Thickness (Microns)
Typical structure:
Top paint: 20–25 μm
AFP film: 1–2 μm
✔ Selection:
Indoor: 15–20 μm
Outdoor: 20–30 μm
Zinc / Al-Zn Coating Weight
This determines corrosion life:
| Environment | Recommended Coating |
|---|---|
| Indoor | Z60–Z120 |
| Normal outdoor | Z120–Z180 |
| Coastal / industrial | Z275 / AZ150 |
👉 Salt spray resistance can reach 500–1000 hours+
Surface Finish
Choose based on design + usage:
Matte (anti-glare, premium look)
Satin
Glossy
Textured / wrinkle (better scratch resistance)
👉 Matte + AFP = best for luxury & high-end projects
Mechanical Properties
Check:
T-bend ≤ 3T
Adhesion: Grade 0
Impact resistance ≥ 9J
👉 Important for:
Roll forming
Deep drawing
Bending applications
Supplier & Quality Control (Critical for B2B)
Common real-world issue (from industry discussions):
Buyers sometimes receive wrong weight or inconsistent coating
✔ Must check:
ISO 9001 certification
Mill Test Certificate (EN 10204 3.1)
Third-party inspection (SGS / BV / TUV)
Coating thickness report
Quick Selection Formula (Practical)
👉 If you want a safe universal configuration:
Substrate: GL (AZ150)
Paint: SMP / HDP
AFP: Nano coating
Thickness: 0.4–0.6 mm
Top coating: 20–25 μm
Finish: Matte
✔ Suitable for:
Construction
Appliances
Export markets
Common Mistakes to Avoid
❌ Only comparing price (ignore coating system)
❌ Not specifying AFP performance standard
❌ Choosing GI for coastal projects
❌ Ignoring paint thickness
❌ No third-party inspection
Pro Buyer Tips (Very Important)
Always ask for sample + fingerprint test
Specify RAL color + gloss level
Confirm protective film (PE film) for transport
For branding → request custom logo coating
Conclusion
Choosing Anti-Fingerprint PPGI Coil = balancing:
👉 Application + Substrate + Coating System + Performance
If your goal is:
High-end appearance → Matte AFP + PVDF
Cost-effective → GI + PE + AFP
Long-term durability → GL + HDP/PVDF + AFP
