Color Coated Aluminum Coil,PVDF/PE Coated Aluminum Coil Factory

What is color coated aluminum coil?

Color-coated aluminum coils are a new type of decorative material formed by chemical treatment and coating of aluminum coils or aluminum alloy coils. It uses high-quality aluminum as the substrate, and applies one or more layers of colored paint to the surface through an advanced continuous roller coating process, followed by high-temperature baking and curing to form a durable colored coating. This process allows the aluminum coil to retain not only the inherent lightweight, high strength, and excellent corrosion resistance of aluminum, but also a variety of rich surface effects and enhanced durability, making it a widely used high-performance material in modern architectural decoration and industrial manufacturing.

Color-coated aluminum coils are available in various materials, including 1060, 1100, 3003, 3004, 3105, and 5052. The thickness is generally between 0.2-3.0 mm.

The choice of coating type mainly depends on the application environment and performance requirements. Polyester coating (PE) offers good cost-effectiveness and is suitable for indoor and general outdoor environments; fluorocarbon coating (PVDF) provides superior weather resistance and is suitable for harsh climatic conditions and high-end building projects requiring long-term color retention. In addition, there are polyester-coated aluminum coatings specifically designed for interior decoration and advertising displays, as well as special safety coatings suitable for food packaging. The appropriate coating type should be selected based on the specific application scenario.

Depending on the requirements of the usage environment, single-coat, double-coat, or triple-coat systems can be selected. Single-coat systems (4μm-20μm) are suitable for less demanding indoor environments; double-coat systems (25μm-28μm) offer better coverage and protection, suitable for most outdoor environments; while triple-coat systems (35μm-38μm) provide optimal protection and appearance, suitable for harsh environments and high-end buildings.

Coated aluminum coils offer a variety of surface texture options, including glossy, matte, embossed, and brushed. Different surface textures not only affect aesthetics but also performance and ease of cleaning and maintenance. Color selection requires consideration of coordination with the overall design, heat reflectivity (for outdoor applications), and long-term color retention requirements.

Performance advantages of color-coated aluminum rounds

• Corrosion Resistance: The aluminum base itself forms a dense oxide film on its surface. Combined with the additional protection provided by the coating, color-coated aluminum coils offer double corrosion protection, particularly resistant to acid and alkali corrosion in coastal and industrial areas, significantly extending the material's service life.
• Lightweight: Aluminum's density is only about 1/3 that of steel, making color-coated aluminum coils lightweight and easy to handle, significantly reducing construction loads. Excellent ductility and processability allow for complex on-site cutting, bending, and shaping requirements, improving construction efficiency and reducing installation costs.
• Weather Resistance:Using high-performance international coatings such as PVDF and PPG, prepainted aluminum coils can withstand strong UV rays, acid rain, and air pollution. Even in harsh outdoor environments, they maintain long-lasting color and gloss, ensuring 15–20 years of no chalking and no fading.
• Workability:Prepainted aluminum coils offer excellent flexibility and formability. They can be freely cut, slitted, curved, stamped, drilled, and fixed, making them suitable for processing various complex shapes and installation requirements.
• Fire Resistance:The coatings used for prepainted aluminum coils contain no heavy metals or harmful substances. Most products meet fire safety standards, and some specialized products can even achieve Class A fire resistance.
• Decorative Appearance:Prepainted aluminum coils come in a wide range of vibrant colors and offer a fine, uniform surface texture. Options such as wood grain, stone grain, and marble grain meet diverse design needs and aesthetic preferences.
• Eco-Friendly and Recyclable:The production of prepainted aluminum coils typically uses chromium-free pretreatment solutions, and the roll-coating paints comply with environmental regulations. The material is fully recyclable, contributing to sustainability and environmental protection.
• Economic Value:Although the initial investment is slightly higher than traditional materials, the long service life and high recycling value of prepainted aluminum coils make them more economical over their entire life cycle.
• Easy to Clean:The smooth surface of prepainted aluminum coil is stain-resistant and easy to clean. Simple maintenance is sufficient to keep it looking new, significantly reducing upkeep time and costs.