High Weather-durability coating coil is one kind of Polyester coating coil, it can effectively improve the UV rejection, and extend the life time for exterior using.
Product Description
Introduction of Coated aluminium coil
A coated aluminium coil is a surface coating and coloring of aluminium using coil coating technology to ensure a uniform and complete coating over the entire surface of the product. The coating can be applied on one or both sides. Various coating systems are possible, for example, HDPE coated aluminium coil.
Applications
● Building facades
● Curtain wall and shading elements
● Roofing
● Roller blinds
● Composite walls and partitions
● Ceiling panels
● Laminate or sandwich panels
● Decorative panels
● Billboards
HDPE coated aluminium coil is used for aluminium ceilings, roofing surfaces, leftovers, cans, electronics. Its performance is very stable and not easy to be corroded. With special treatment, the surface can be guaranteed for 30 years. The weight per unit volume is the lightest among metal materials.
Coated aluminium coil performance
PVDF & FEVE & HDPE coated aluminium coil performance
Item Testing Standard Standard requirment PVDF FEVE HDPE
1 Color ECCA T3 Using range Matt and dark colors All colors All colors
2 Gloss ECCA T2 Max.gloss degree 35 85 90
Min.gloss degree 15 50 20
3 Coating Thickness ECCA T1 2 layers coating Min.23µm ≥25µm ≥25µm ≥25µm
3 layers coating Min. 30µm ≥34µm according to requirements according to requirements
4 Pencil Hardness ECCA T4 ≥HB HB H H
5 T-bend ASTM D4145 Aluminium thickness≥0.50mm 90 degree no crack / 90 degree no crack
Aluminium thickness＜0.50mm 2T 2T 2T
6 Adhesion ASTM D3359 Grade 0 Grade 0 Grade 0 Grade 0
7 Inpact Resistance ASTM D2794 ≥50kg.cm ≥50kg.cm ≥50kg.cm ≥50kg.cm
8 Boil Resistance GB/T17748 2 hours no change 4 hours no change 2 hours no change 2 hours no change
9 Solvent Resistance ASTM D2248 200 times no change 200 times no change 200 times no change 200 times no change
10 Acidity Resistance ASTM D1308 5%HCL 24h, no change 5%HCL 24h, no change no change 2%HCL 24h, no change
11 Alkalescence Resistance ASTM D1308 5%NaOH 24h,△E≤2.0 5%NaOH 24h,△E≤2.0 5%NaOH 24h, △E≤2.0 saturated Ca(OH)2 24hours△E≤2.0
12 Nitric acid Resistance AAMA620 △E≤5.0 △E≤5.0 △E≤5.0，slight blister △E≤5.0，slight blister
13 Oil Resistance ASTM D1308 20＃Engine oil 24hours no change 20＃Engine oil 24hours no change 20＃Engine oil 24hours no change no change
14 Salt Resistance ASTM B117 4000hours no less than grade 1 4000hours no less than grade 1 4000hours no less than grade 1 2000 hours corrosion edge≤2mm
15 Abrasion Resisstance ASTM D968 ≥5L/µm ≥5L/µm Waiting for the third party testing Waiting for the third party testing
16 Dirt Resistance GB/T9780 ≤5% ＜5% Waiting for the third party testing Waiting for the third party testing
17 Color retention GB/T16259 4000hrs，△E≤4.0 4000hrs，△E≤4.0 2000 hours△E≤4.0 2000 hours△E≤4.0
18 Gloss weaken level 4000hours no less than grade 2 4000hours no less than grade 2 2000h, no less than grade 2 2000h, no less than grade 2
19 Chalk resistance 4000 hours no change 4000 hours no change（no less than grade 2） 2000hours,no less than grade 2 2000hours,no less than grade 2
20 Fluoride resin percentage 70% ≥95% none
21 Guarantee for exterior using GB/T16259 10-15 years in different colors 10-15 years in different colors 7-8 years in different colors
Advantages of coated aluminium coil:
1. Light texture, easier to form
2. Corrosion resistance Because of its surface has a dense oxide film, so it has strong adhesion, anti-oxidation, acid resistance, alkali resistance, corrosion resistance, corrosion resistance, UV resistance.
3. Good temperature resistance, the melting point of aluminum is 660 degrees, the general temperature does not reach his melting point
4. The board has extremely high strength and can be cut, slit, balanced, drilled, joined, fixed and compressed at the edges.
