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China Polyester-Coated Color Aluminum Coil Suppliers | High-Quality Factory Products for Architectural and Decorative Use
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 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 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 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 ≥99.5% Al |
Indoor decoration, home appliances, and low-stress applications | Excellent ductility, easy to process into complex shapes |
|
3003 / 5052 Mn 1.0–1.5% / Mg 2.2–2.8% |
Outdoor decoration, transportation parts, and high-stress applications | Enhanced corrosion resistance and tensile strength |
Advantages Over Alternative Materials
Compared with traditional decorative materials such as steel plates, wood, and ceramic tiles, polyester-coated color aluminum coil has obvious comprehensive advantages:
vs. 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.
vs. 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.
vs. 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.
vs. 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 (FAQ)
Q
What thickness of polyester-coated color aluminum coil is best for outdoor architectural decoration?
For outdoor architectural decoration such as wall cladding, ceiling panels, and door panels, a medium substrate thickness of 0.3mm–1.2mm with a standard coating (30–40μm total) is most commonly recommended. This combination provides a good balance of structural rigidity, weather resistance, and cost-effectiveness. For harsh coastal or industrial environments, a thick coating (40–50μm) with 3003 or 5052 alloy is advised for enhanced corrosion protection.
Q
How long does polyester-coated color aluminum coil last compared to traditional materials?
Polyester-coated color aluminum coil typically offers a service life of 15–20 years, significantly longer than solid wood (5–10 years) and comparable to galvanized steel in non-corrosive environments. In standard outdoor conditions, the polyester coating maintains color and adhesion integrity with a neutral salt spray resistance of ≥500h (standard coating) to ≥1000h (thick coating).
Q
Can polyester-coated aluminum coil be customized in width and color?
Yes. Custom widths are available from 500mm to 1600mm, and coil weights range from 50 to 3000kg per roll to suit various production and project requirements. Colors can be customized to match RAL, Pantone, or customer-specified color standards, with a color difference tolerance of ΔE ≤1.5 to ensure batch consistency.
Q
What is the difference between polyester (PE) coating and PVDF coating on aluminum coil?
Polyester (PE) coating offers good adhesion, color richness, and cost efficiency, making it suitable for most indoor and general outdoor applications. PVDF (polyvinylidene fluoride) coating provides superior UV resistance and weather durability, ideal for extreme outdoor environments. However, PVDF costs approximately 2–3 times more than polyester. For most standard architectural and industrial applications, polyester coating delivers sufficient performance at a significantly lower cost.
Q
Which aluminum alloy grade is recommended for high-stress or transportation applications?
For high-stress applications such as automotive trim, trailer panels, and transportation components, 3003 alloy (with 1.0–1.5% Mn) or 5052 alloy (with 2.2–2.8% Mg) is recommended. These alloys offer enhanced tensile strength and corrosion resistance compared to the 1050/1060 series, while still maintaining good formability for complex stamping and bending operations.
Q
What quality control standards are applied to polyester-coated color aluminum coil?
Strict quality control is applied throughout production. Key standards include: coating adhesion ≥4B, pencil hardness ≥2H, thickness deviation ≤±0.02–0.03mm depending on gauge, width deviation ≤±0.5mm, color difference ΔE ≤1.5, and neutral salt spray resistance ranging from ≥500h (standard coating) to ≥1000h (thick coating). Weather resistance testing reaches ≥2000h for thick-coated products designed for harsh environments.