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China Polyester-Coated Color Aluminum Coil Suppliers | High-Quality Factory Products for Decoration and Industry
Key Specifications
Polyester-coated color aluminum coil specifications are customized according to application scenarios and processing requirements. The main specifications are shown in the following table:
| Specification Category | Detailed Parameters | Typical Applications | Quality Control Requirements |
| Substrate Thickness | Thin: 0.15mm – 0.3mm | Home appliance panels (refrigerator side panels, washing machine covers), thin signage | Thickness deviation ≤±0.02mm, good flexibility |
| Medium: 0.3mm – 1.2mm | Architectural decoration (ceiling panels, wall cladding, door panels), advertising light boxes | Thickness deviation ≤±0.03mm, flat surface without waves | |
| Thick: 1.2mm – 3.0mm | Transportation parts (automotive trim, trailer panels), outdoor billboards, cabinet frames | Tensile strength ≥150MPa, good stamping performance | |
| Coating Parameters | Thin Coating: Total thickness 20–30μm (primer 5–8μm, topcoat 15–22μm) | Indoor decoration (interior wall panels, furniture panels), small home appliances | Adhesion ≥4B, pencil hardness ≥2H |
| Standard Coating: Total thickness 30–40μm (primer 8–10μm, topcoat 22–25μm) | Outdoor architectural decoration, medium-sized home appliances, signage | Color difference ΔE ≤1.5, neutral salt spray test ≥500h | |
| Thick Coating: Total thickness 40–50μm (primer 10μm, topcoat 25–30μm, backcoat 5–10μm) | Harsh environment applications (coastal architectural cladding, industrial workshop walls) | Neutral salt spray test ≥1000h, weather resistance test ≥2000h | |
| Width & Length | Standard Width: 1000mm, 1220mm, 1500mm, 1600mm | Batch production of architectural materials, home appliances, and signage | Width deviation ≤±0.5mm, no edge warping |
| Custom Width: 500mm – 1600mm; Length: 50–3000kg/roll | Special-sized architectural projects, customized home appliances, and transportation parts | Uniform coil tension, no creases or scratches | |
| Alloy Types | 1050/1060 Alloy (≥99.5% Al) | Indoor decoration, home appliances, and low-stress applications | Excellent ductility, easy to process into complex shapes |
| 3003 Alloy (with Mn 1.0–1.5%) / 5052 Alloy (with Mg 2.2–2.8%) | Outdoor decoration, transportation parts, and high-stress applications | Enhanced corrosion resistance and tensile strength |
Advantages Over Alternative Materials Key Comparison
Compared with traditional decorative materials such as steel plates, wood, and ceramic tiles, polyester-coated color aluminum coil has obvious comprehensive advantages:
| Alternative Material | Advantages of Polyester-Coated Color Aluminum Coil | Key Reason |
| Galvanized Steel Plate | Lighter weight (1/3 of steel), better corrosion resistance, richer colors, and no rust | Galvanized steel is prone to rust after the zinc layer is damaged; aluminum substrate has natural corrosion resistance, and the polyester coating enhances protection. |
| Solid Wood | No deformation, no moth-eaten, water-resistant, fire-resistant, and longer service life (15–20 years vs. 5–10 years of wood) | Wood is easily affected by moisture and temperature, leading to deformation and moth-eaten; polyester-coated aluminum is stable in physical properties and not affected by the environment. |
| Ceramic Tile | Lighter weight (reduces building load), easier to install (no need for cement bonding), and better formability (can be bent) | Ceramic tile is heavy and brittle, easy to break during transportation and installation; it cannot be processed into curved shapes. |
| PVDF-Coated Aluminum Coil | Lower cost (about 30–50% of PVDF), sufficient performance for general applications, and more color options | PVDF coating has better weather resistance but higher cost; polyester coating meets the needs of most non-harsh environment applications at a lower cost. |
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Frequently Asked Questions
Q
What is the standard thickness range for polyester-coated color aluminum coil?
Polyester-coated color aluminum coil is available in thicknesses ranging from 0.15mm to 3.0mm. Thin gauges (0.15–0.3mm) suit home appliance panels, medium gauges (0.3–1.2mm) are ideal for architectural decoration, and thick gauges (1.2–3.0mm) are used for transportation and outdoor billboard applications.
Q
How long does the polyester coating last in outdoor environments?
Standard polyester coating (30–40μm) passes a neutral salt spray test of ≥500 hours, making it suitable for general outdoor use. Thick coating variants (40–50μm) achieve ≥1000 hours in salt spray and ≥2000 hours in weather resistance testing, ideal for coastal or industrial environments.
Q
Can polyester-coated aluminum coil be customized in width and color?
Yes. Width can be customized from 500mm to 1600mm, and coil weight ranges from 50 to 3000kg per roll. A wide variety of RAL and custom colors are available. Color consistency is controlled to a color difference of ΔE ≤1.5 to ensure batch uniformity.
Q
Which alloy is best for outdoor or high-stress applications?
For outdoor decoration, transportation parts, and high-stress applications, 3003 alloy (Mn 1.0–1.5%) and 5052 alloy (Mg 2.2–2.8%) are recommended. These alloys offer enhanced corrosion resistance and tensile strength compared to the 1050/1060 series used in indoor or low-stress scenarios.
Q
How does polyester-coated aluminum coil compare to PVDF-coated aluminum in terms of cost and performance?
Polyester-coated aluminum coil costs approximately 30–50% less than PVDF-coated alternatives. While PVDF offers superior weather resistance for extreme environments, polyester coating provides sufficient durability and a broader range of color options for most standard architectural and industrial applications.
Q
Is polyester-coated color aluminum coil suitable for curved or bent installations?
Yes. One of the key advantages of polyester-coated aluminum coil over ceramic tiles and other rigid materials is its excellent formability. It can be bent, rolled, and shaped into curved profiles without cracking or delamination, making it ideal for modern architectural facades and decorative trims.