5mm Aluminum composite panels

5mm Aluminum Composite Panels: Engineering Excellence in Modern Cladding

5mm Aluminum Composite Panels (ACPs) are sandwich-structured building materials consisting of two coil-coated ​aluminum sheets (typically 0.25–0.5mm thick) bonded to a ​core layer (3–4.5mm thick) of fire-retardant mineral-filled polymer or polyethylene (PE). Designed for both durability and versatility, 5mm ACPs strike an optimal balance between structural rigidity and lightweight performance, making them ideal for demanding architectural and industrial applications.

 

​1. Core Structure & Manufacturing

​Surface Layers: High-purity aluminum alloy (grades 1100, 3003, or 5005) coated with ​PVDF (polyvinylidene fluoride) for outdoor weather resistance or ​PE (polyester) for indoor use.
​Core Layer: 3–4.5mm thick mineral-filled polymer (A2/B1 fire-rated) or PE. Mineral cores dominate modern production due to stringent fire-safety regulations.
​Protective Film: Removable layer to prevent damage during handling.
Production: Automated lamination under heat/pressure ensures uniform thickness (±0.1mm tolerance) and peel strength.

​2. Key Technical Specifications

Parameter 5mm ACP Specifications
​Thickness Panel: 5mm ±0.1mm; Aluminum skin: 0.25–0.5mm
​Weight 5.5–6 kg/m² (lighter than 3.3mm aluminum sheet)
​Panel Dimensions Max width: 1,500mm; Max length: 6,000mm
​Fire Rating A2/B1 (mineral core) or B1 (PE core)
​Bending Radius Cold-formed to 135°–150° (V-groove processing)

​3. Performance Advantages

​Structural Efficiency:
High stiffness-to-weight ratio (surpasses 3.3mm aluminum sheets).
Impact resistance withstands wind loads and physical stress.
​Fire Safety: Mineral cores limit flame spread and smoke toxicity.
​Weather Resistance: PVDF coatings resist UV fading, corrosion, and extreme temperatures (-40°C to 80°C).
​Machinability: Easily cut, drilled, or bent using standard woodworking tools.
​Aesthetic Flexibility: Customizable via digital printing, metallic finishes, wood grains, or mirror effects.

​4. Primary Applications

​Architectural Cladding:
​Exterior Facades: 5mm thickness ideal for high-rise curtain walls and column covers.
​Interior Systems: Ceilings, partitions, and elevator lobbies.
​Specialized Uses:
​Advertising: Signboards, exhibition stands (printable surfaces).
​Transportation: Bus/train interiors and cold-storage units.
​Renovations: Lightweight retrofitting of aging structures.

​5. Installation & Maintenance

​Installation:
Mounted on galvanized steel/aluminum frames using open-joint systems (20mm gaps for thermal expansion).
Corners reinforced with rubber mallets to avoid surface damage.
​Maintenance: Clean with neutral pH cleaners; no abrasive chemicals required.

​Eco-Profile: Aluminum layers recyclable (95% recovery); mineral cores reduce plastic use.

​Innovations & Future Outlook
​Smart Integration: PVDF coatings with solar-reflective properties to reduce building cooling loads.
​Thinner Cores: R&D focused on 2.5–3mm cores to further reduce

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