| Surface Coating | Polyester Coating |
| Aluminum Alloy | AA1100, AA3003 |
| Aluminum Skin | 0.10mm,0.12mm,0.15mm,0.18mm,0.21mm,0.25mm,0.30mm |
| Panel Thickness | 2mm,3mm,4mm,5mm |
| Core Material | Non-toxic low density polyethylene |
| Panel Width | 1000mm,1220mm,1250mm,1500, |
| Panel Length | 2440mm,3050mm,4000mm,5000mm |
| Back Coat | PE coating, Primer Coating ,Mill finish |
| Panel Width | ±2mm |
| Panel Length | ±3mm |
| Panel Thickness | ±0.2mm |
| Panel Diagonal | ≤ 5mm |
| Aluminum layer thick ness | ±0.02mm |
| Description | Test standard | Polyester |
| Coating Thickness ( μm ) | Polyester paint >=16 μm | 16 μm to 18 μm |
| Coating flexibility (T-bend) | Polyester paint ≤ 3T | ≤ 3T |
| Color different | ΔE <= 2.0 (follow color sample) | ΔE <= 2.0 |
| Pencil hardness | >= HB | >= 2H |
| Chemical resistance | 2%HCI or 2%NaOH test in 24 hours -No change | No change |
| Coating adhesion | >= 1grade for 10810mm2 gridding test | 1grade |
| Resist solvent | 100 times without change | No change |
| Boiling water resistance | 2 hours without change | No change |
| Peeling strength/stripping strength |
Average
>=
5N/mm of 180oc peel off
for panel with 0.21mm alu.skin |
5N/mm |
| Impact test for paint | 20KG.cm impact-paint no split for panel | No split |
| Abrasion resistance (L/Mil) | NIL | NIL |
| Temperature resistance |
-40
ºC
to +80
ºC
temperature without
change of color difference and paint peel off, peeling strength average dropprate <= 10% |
Change of glossy only, no paint |
| Peel off | ||
| Coefficient of linear Thermal Expansion | 100 ºC temperature difference | 2.4mm/n |
| Detergent resistance (3%) | ASTM D2248 | No change |
| Humidity Resistance (3000hrs,100%RH,100°F) | ASTM D2247 | No change |
| Salt spray resistance (3000hrs,5% salt) | ASTM B117 | No change |
| Resistance to Staining |
600h radiate in 800W/M2 in humidity condition
,glossiness deviation less grade 2,color difference <= 4.0 |
No change |