Color Coated Aluminum Sheet Coil

Color coated aluminum coil is a composite material made from aluminum coil as the base material, with a colored coating applied through a coating process. It combines the strength of metal materials with the decorative and protective functions of coatings, and is widely used in construction, industry, transportation, and other fields.

Color coated aluminum coil refers to the application of colored paint or resin layer on the surface of aluminum coil to enhance aesthetics and provide additional protection. The process involves uniformly applying a coating on the aluminum coil surface, combining the inherent advantages of aluminum with customizable colors and finishes.

Color coated aluminum coil is a versatile material widely used in construction, decoration, and industrial fields.

Color coated aluminum is produced by applying a protective and decorative coating (such as polyester, polyvinylidene fluoride) onto aluminum coil or sheet. This coating undergoes cleaning, chromating, roll coating, and baking processes. The coating enhances the durability, UV resistance, and appearance of the aluminum coil or sheet while preventing corrosion and environmental damage.

Color Coated Aluminum Sheet Coil Structure

Base Material and Coating

The base material is made of high-purity aluminum, with added magnesium and manganese alloy elements to improve mechanical strength;

Surface coatings are divided into two categories: Polyester (PE) and Fluorocarbon (PVDF):

• Polyester Coating: Low cost, rich in color, suitable for interior decoration and general industrial scenarios;
• Fluorocarbon Coating: UV resistant, strong acid and alkali corrosion resistance, service life up to more than 20 years, commonly used in landmark buildings and coastal facilities.

Color Coated Aluminum Sheet Coil Specifications

Core Performance of Color Coated Aluminum Sheet Coil

• Weather Resistance: After high-temperature curing, the coating forms a dense protective film that resists erosion from salt spray and acid rain;
• Decorative Effect: Supports solid colors, metallic colors, wood grain/stone grain effects, meeting diversified design needs;
• Lightweight: Low density (approximately 2.7g/cm³), reducing building structural load;
• Processability: Can be bent, stamped, and sheared, adaptable to complex shapes.

Features of Color Coated Aluminum Sheet Coil

• Aesthetic Diversity: These aluminum coils offer a variety of colors and finishes, including matte, glossy, wood grain, and stone grain patterns, enabling diverse design possibilities.
• Durability: The coating provides excellent weather resistance, protecting the aluminum coil from UV radiation, corrosion, and environmental wear. High-quality coatings such as PVDF (Polyvinylidene Fluoride) can offer warranties of 20 years or more.
• Lightweight and Strong: Aluminum coils have low density and light weight, reducing structural load. Despite their lightness, they retain high strength and stiffness, suitable for various applications.
• Formability: Color coated aluminum coils have excellent formability and can be processed into various shapes without affecting the integrity of the coating.
• Environmental Friendliness: Aluminum is a recyclable material, and the coating processes are designed to be more environmentally friendly, supporting sustainable development.
• Colors and Surface Treatments: Color coated aluminum coils are available in various colors and surface treatments, including smooth, textured, matte, and other effects to meet different design needs.
• Thermal Conductivity: Excellent thermal conductivity makes it suitable for applications requiring heat dissipation, such as exterior building surfaces and roofs.
• Economic Efficiency: Color coated aluminum coil is a cost-effective choice, offering high cost-performance compared to other materials.

Coatings of Color Coated Aluminum Sheet Coil

• Polyester (PE) Coated Aluminum: Provides a good balance between performance and cost, suitable for indoor applications and moderately exposed environments.
• Fluorocarbon (PVDF) Coated Aluminum: Offers excellent weather resistance and color retention, ideal for outdoor applications exposed to harsh conditions.

The choice between PE and PVDF coatings depends on specific application requirements, including environmental exposure, expected service life, and budget considerations.

• Surface Protection: PE/PVC film on the main surface (if specified).
• Gloss: 20% to 80%, depending on customer requirements.
• Coil ID: 405mm, 505mm, 605mm.

Color-coated aluminum coils are mainly classified into two types based on the coating: polyester-coated aluminum coils (PE) and fluorocarbon-coated aluminum coils (PVDF). Each coating has unique characteristics and application areas.

• Polyester Coating (PE): Suitable for indoor decoration and signage that require economic efficiency. It has lower corrosion resistance but is more affordable.
• Fluorocarbon Coating (PVDF): Ideal for high-end architecture and applications in harsh environments, offering superior corrosion resistance and weatherability, maintaining a good appearance over time.

Polyester Coated Aluminum Coil (PE)

Polyester-coated aluminum coil (PE) is made from a mixture of polyester resin (a high molecular polymer containing an ester bond in the main chain) and alkyd resin. It is available in matte and high-gloss series, providing different gloss effects. PE-coated aluminum coil is suitable for products requiring multiple processing or used in areas with low air pollution, such as ordinary industrial buildings, warehouses, logistics storage facilities, and traffic signs.

Coating Characteristics

• Performance: Exhibits excellent adhesion, gloss, smoothness, and feel, enhancing the sense of depth and three-dimensionality of aluminum products.
• Weather Resistance: Provides some UV resistance, protecting aluminum products from UV rays, wind, rain, frost, snow, temperature differences, freeze-thaw cycles, corrosive gases, and microorganisms.

Application Areas

• Interior Decoration: Suitable for indoor decoration in homes, offices, and similar environments.
• Signage: Used for creating advertising signs, enhancing visual effects and decorative appeal.

Durability and Maintenance

• Durability: In general outdoor environments, PE coating’s corrosion resistance usually lasts for 7-8 years.
• Price: Compared to fluorocarbon coatings, PE coatings are less expensive, offering a high cost-performance ratio.

Fluorocarbon Coated Aluminum Coil (PVDF)

Fluorocarbon-coated aluminum coil (PVDF) is primarily composed of polyvinylidene fluoride (PVDF) resin, including a small amount of fluorine-containing ethylene monomer copolymer.

Coating Characteristics

• Surface Structure: Available in traditional fluorocarbon coating and nano fluorocarbon coating, providing different surface properties.
• Performance: Offers exceptional corrosion resistance, color retention, UV resistance, and heat resistance. The PVDF coating undergoes double or triple coating and high-temperature baking, forming a cured coating with a thickness of 25~35μm.

Application Areas

• High-end Architecture: Used in exterior walls and roofs of high-end buildings, particularly suitable for buildings in harsh environments such as chemical and metallurgical industries.
• Public Places: Widely used in public places, commercial chains, exhibition advertisements, and other indoor and outdoor decorations.
• Coastal and Polluted Areas: Suitable for use in coastal humid areas, high UV regions, and areas with severe pollution and corrosion.

Durability and Maintenance

• Durability: PVDF coating has extremely high corrosion resistance and weatherability, ensuring no fading for 30 years, maintaining bright colors for a long time.
• Maintenance: The coating has high self-cleaning properties, requires no maintenance, and ensures the aluminum coil does not fade for 10~15 years, making it economical and durable.

Color Coated Aluminum Sheet Coil Alloy and Temper

1100 Color-Coated Aluminum Coil: Composed of 99% aluminum, it has excellent corrosion resistance and gloss, making it suitable for building and home appliance decoration.

• Features: Excellent processing performance and gloss, smooth surface, suitable for various surface treatments such as spraying and roll coating.
• Applications: Mainly used for decorative purposes, such as building facades, interior panels, and home appliance panels.

1050 Color-Coated Aluminum Coil: Contains 99.5% aluminum, strong corrosion resistance, and a smooth surface, widely used in construction and advertising signs.

• Features: Excellent workability, bright colors, high gloss, suitable for various color coating processes.
• Applications: Commonly used in building decoration, home appliances, and advertising signs.

1060 Color-Coated Aluminum Coil: Contains 99.6% aluminum, has excellent corrosion resistance and color stability, suitable for building decoration and solar collectors.

• Features: Excellent formability, surface suitable for coating treatment, color stability.
• Applications: Widely used in building decoration, solar collectors, and automotive trim.

1070 Color-Coated Aluminum Coil: 99.7% aluminum content, providing excellent corrosion resistance and thermal stability, mainly used for electrical insulation and building decoration.

• Features: Excellent conductivity, thermal conductivity, workability, suitable for various color coatings.
• Applications: Mainly used in electrical insulation materials, chemical equipment, and building decoration.

3003 Color-Coated Aluminum Coil: Contains aluminum and manganese, good corrosion resistance, suitable for food packaging, home appliances, and building decoration.

• Features: Cheaper than 3105, with better mechanical properties compared to 1000 series alloys, especially at high temperatures. Firm coating, suitable for high-demand coating decoration.
• Applications: Commonly used in building decoration, such as roofs and wall panels, ceilings, corrugated panels, and insulation.

3004 Color-Coated Aluminum Coil: Aluminum and manganese alloy, with high strength and corrosion resistance, widely used in building facades and automotive interiors.

• Features: Excellent coating adhesion and stability, with higher strength than 3003 color-coated aluminum strip.
• Applications: Widely used in building facades, roofing materials, automotive interiors, etc.

3105 Color-Coated Aluminum Coil: Aluminum with manganese and magnesium alloy, strong corrosion resistance, and coating adhesion, suitable for construction and advertising signs.

• Features: Excellent rust resistance, workability, and coating adhesion, with a variety of colors and high gloss.
• Applications: Commonly used in building decoration, home appliance panels, advertising signs, etc.

5005 Color-Coated Aluminum Coil: Aluminum with magnesium alloy, providing good corrosion resistance and mechanical properties, suitable for building facades and vehicles.

• Features: Medium strength, good oxidation deep processing performance, with a more vibrant color coating effect than the 3003 alloy. The coating is firm, suitable for high-demand decorative applications.
• Applications: Widely used in building facades, interior panels, vehicles, etc.

5052 Color-Coated Aluminum Coil: Contains aluminum and magnesium, with excellent corrosion resistance and strength, commonly used in ships and chemical equipment.

• Features: Excellent corrosion resistance, wear resistance, and strength, with stable color coating effects.
• Applications: Commonly used in ships, chemical equipment, building decoration, and other fields.

Color Coated Aluminum Sheet Coil Alloy Designation

Color Coated Aluminum Sheet Coil Chemical Composition

Applications of Color Coated Aluminum Sheet Coil

Color-coated aluminum coils and sheets have become important materials in modern construction and industrial projects due to their wide range of color choices, excellent performance, and broad application areas.

Architectural Decoration

• Exterior Walls and Roofs: Color-coated aluminum coils are widely used in the exterior walls and roofs of buildings, providing aesthetic and durable protection. Their diverse colors and surface treatments can perfectly match architectural design styles while offering excellent weather resistance and corrosion protection to ensure that the building's appearance remains as good as new over time.
• Aluminum Panels and Honeycomb Panels: These materials are widely used in both interior and exterior walls and curtain wall systems, enhancing the modernity and functionality of buildings. Aluminum panels and honeycomb panels not only have high strength and lightweight characteristics, but they can also achieve various decorative effects through color coating technology.
• Aluminum Ceilings: Used for interior ceiling decoration, providing an aesthetically pleasing and durable solution for indoor environments. Color-coated aluminum ceilings can enhance the visual effect and comfort of spaces through different color and texture designs.

Industrial Applications

• Industrial Buildings: In the roofing and wall decoration of industrial buildings, color-coated aluminum coils offer excellent weather resistance and corrosion protection, ensuring durability and ease of maintenance over long-term use.
• Electronics: In the panels of home appliances and electronic product housings, color-coated aluminum coils not only enhance the appearance of the product but also increase its durability. Different colors and surface treatments can meet various design needs, improving the market competitiveness of the products.
• Beverage Cans: Used in beverage and food packaging, color-coated aluminum coils provide excellent protection and decorative effects. They effectively preserve the freshness of food and enhance brand recognition and visual appeal through colored coatings.

Advertising and Marketing Applications

Signage and Displays: Color-coated aluminum coils are used to make advertising signs and storefront displays, enhancing brand image and visual appeal. The wide range of color choices and high-quality coating technology ensure that signs and displays maintain clear visual effects and long-term durability in various environments.

Due to their excellent performance and broad application areas, color-coated aluminum coils and sheets have become the ideal choice for multiple industries, including construction, industry, packaging, and advertising, meeting the diverse needs of modern architectural and industrial design.

Advantages of Color Coated Aluminum Sheet Coil

• Corrosion Resistance: Natural oxide film and coatings prevent rust, making it ideal for coastal/harsh environments.
• Lightweight: Only one-third the density of steel, reducing structural load.
• Aesthetic Flexibility: Available in real wood, metallic, wood grain or stone grain finishes; colors customizable (RAL/Pantone).
• Sustainability: 100% recyclable with high scrap value.
• Durability: PVDF-coated products can withstand extreme weather and maintain color for decades.

Production Process of Color Coated Aluminum Sheet Coil

• Pretreatment: Cleaning, degreasing, and passivation to enhance adhesion.
• Coating: Primer, top coat, and finishing layer are applied by roll coating and then baked.
• Post-processing: Slitting, cutting, embossing, or brushing texture.

Haomei Color Coated Aluminum Sheet Coil Quality Control

• Testing: Coating thickness (magnetic particle inspection), adhesion (cross-cut test), color consistency (colorimeter), and salt spray corrosion testing.
• Certification: ASTM B209M, ISO 9001, EN standards.

Production Process of Color Coated Aluminum Sheet Coil

Substrate Preparation

Aluminum Coil Selection: Select suitable aluminum coils as substrates, usually high-quality aluminum alloys, to ensure good processing performance and final results.

Surface Treatment

• Coating Application: After cleaning and pre-treating the surface of the aluminum coil, apply a fluorocarbon or polyester coating. These coatings not only impart color to the aluminum coil but also provide excellent weather resistance and corrosion protection.
• Curing: After the coating is applied, it undergoes high-temperature curing to firmly bond the coating with the surface of the aluminum coil, forming a durable and stable layer.

Forming and Processing

• Cutting and Coiling: The color-coated aluminum coil can be cut, coiled, or further processed to meet different application scenarios.
• Sheet Processing: The color-coated aluminum coil can also be further processed into sheets for use in construction and industrial applications.