What is Aluminum Foil Coated PE Film?
Core Definition
Aluminum Foil Coated PE Film (AF+PE) is a composite material created by coating high-purity aluminum foil with a layer of LDPE using hot melt extrusion. This process ensures strong adhesion between the aluminum and PE layers, maintaining film integrity and durability.
Core Features:
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High thermal reflectivity for maximum heat insulation.
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Waterproof and moisture-resistant properties.
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Flexible and tear-resistant for easy installation in underfloor heating systems.
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Environmentally safe and recyclable.
Material Composition
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Aluminum Foil Layer: Provides high reflectivity (97–99%), excellent heat shielding, and barrier properties against oxygen, moisture, and UV.
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LDPE Coating Layer: Acts as adhesive, enhances flexibility, durability, and protects the aluminum layer from mechanical damage.
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Thickness Options: Customizable based on customer requirements, typically ranging from 6.5μm+20μm to 15μm+20μm or higher.
Specifications
| Material Composition | Thickness Options | Width | Notes |
|---|---|---|---|
| Aluminum Foil + LDPE | 6.5μm+20μm, 7μm+15μm, 15μm+20μm, others customizable | ≤2050mm | Can be cut or rolled based on project needs |
| Reflectivity | 97–99% | — | Reflective layer ensures thermal insulation efficiency |
| Roll Length | 1000–50000m | — | Adjustable to project scale |
| Core Size | 3″ / 6″ | — | Compatible with insulation lamination machines |
Technical Performance Metrics:
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Thermal Reflectivity: 97–99%
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Moisture Resistance: Excellent, prevents condensation and water penetration
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Tear Resistance: High tensile strength and flexibility
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Compatibility: Can be laminated with EPE foam, polyethylene foam, XPE foam
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Durability: Long-lasting for indoor and underfloor applications
Advantages
High Reflectivity and Thermal Insulation
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Aluminum layer reflects up to 99% of heat, reducing energy loss in underfloor heating systems.
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Maintains indoor comfort and optimizes heating efficiency.
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Reduces energy consumption and heating costs by 15–30% in commercial and residential installations.
Waterproof and Moisture-Proof
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LDPE coating forms a moisture-resistant barrier, preventing condensation under flooring.
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Protects insulation foams such as EPE or XPE from water damage.
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Maintains thermal efficiency over time, even in humid environments.
Durability and Mechanical Strength
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Resistant to tearing, puncturing, and bending.
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Aluminum layer preserves reflectivity while LDPE layer ensures flexibility for installation.
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Can withstand long-term exposure under floor panels, tiles, or laminated floors.
Installation Convenience
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Flexible and lightweight, easy to roll out or cut to size.
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Compatible with standard lamination and insulation machines for large-scale projects.
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Adhesive PE layer ensures strong bonding to foam or subfloor surfaces.
Environmentally Friendly
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Made from recyclable aluminum and LDPE.
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Non-toxic, safe for indoor residential or commercial applications.
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Reduces carbon footprint by improving heating efficiency.
Applications
Underfloor Heating Systems
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Reflective insulation under radiant floor heating panels.
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Reduces heat loss and improves energy efficiency.
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Maintains uniform temperature distribution across the floor.
Thermal Insulation in Construction
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Roof insulation: Reflects solar heat and reduces roof temperature.
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Wall insulation: Improves thermal resistance in residential and commercial buildings.
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Floor insulation: Prevents cold conduction and enhances comfort in living spaces.
Foam Lamination
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Laminates with EPE, XPE, or polyethylene foam for protective and thermal insulation blankets.
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Enhances mechanical stability and prevents moisture ingress in insulation boards.
Industrial Applications
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Protective insulation for HVAC ducts and piping.
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Thermal packaging for temperature-sensitive products.
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Insulation for electronics or equipment requiring heat shielding.
Installation Guidelines
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Surface Preparation: Ensure subfloor or insulation foam surface is clean, dry, and smooth.
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Film Orientation: Aluminum side facing the heat source for optimal reflectivity.
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Lamination or Placement: Use hot melt adhesive or mechanical fixing to bond with foam or subfloor.
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Edge Sealing: Seal edges with reflective tape to prevent heat loss or moisture penetration.
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Periodic Inspection: Check for minor tears or punctures and repair as needed to maintain performance.
Technical Advantages
Reflectivity
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Reflects 97–99% of radiant heat, enhancing underfloor heating efficiency.
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Reduces energy consumption while maintaining consistent indoor temperatures.
Thermal Conductivity
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Aluminum layer minimizes heat transfer, ensuring uniform heat distribution.
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Works synergistically with foam insulation to improve thermal resistance (R-value).
Moisture Barrier
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LDPE coating prevents condensation, mold, and mildew formation under flooring.
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Protects foam insulation from degradation due to water exposure.
Mechanical Strength
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High tensile strength prevents tearing during installation.
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Flexible enough to accommodate uneven subfloor surfaces.
Industry Case Studies
Residential Floor Heating
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Multi-story residential building in Europe installed aluminum foil + LDPE underfloor insulation.
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Resulted in 20% reduction in heating energy consumption during winter.
Commercial Office Buildings
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Laminated with XPE foam for large office complex.
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Achieved uniform temperature distribution and improved indoor comfort.
Industrial Applications
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Electronic factory used AF+LDPE film under machinery insulation panels.
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Prevented heat loss and maintained optimal operating conditions for sensitive equipment.
Customization Options
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Thickness: From 6.5μm+20μm to 15μm+20μm, adaptable per project needs.
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Width: Up to 2050mm, suitable for large-scale underfloor heating projects.
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Length: Rolls from 1000–50000m.
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Additives: Optional UV stabilizers, fire retardants, or anti-aging agents.
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Color Coating: Silver or metallic finish for reflective or decorative purposes.
Environmental and Safety Considerations
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Fully recyclable aluminum and LDPE.
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Non-toxic and safe for indoor environments.
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Reduces energy consumption and greenhouse gas emissions through improved heating efficiency.
Frequently Asked Questions (FAQs)
Can this film be used outdoors?
Yes, the film is resistant to UV rays, moisture, and general outdoor conditions, but primarily designed for underfloor heating insulation indoors.
Is it compatible with all types of foam insulation?
Yes, it is compatible with EPE, XPE, and polyethylene foam, as well as other reflective insulation systems.
Can the film be customized for specific projects?
Yes, thickness, width, length, and additional additives can be tailored to your specific project requirements.
What is the expected lifespan of the product?
With proper installation, Aluminum Foil Coated PE Film can last for decades, maintaining thermal reflectivity and moisture resistance over time.
Conclusion
Aluminum Foil Coated PE Film (AF+LDPE) is the ideal solution for underfloor heating insulation and thermal protection applications. Its combination of highly reflective aluminum foil and durable LDPE coating ensures superior heat insulation, moisture resistance, and long-term performance.
Widely used in construction, industrial insulation, underfloor heating, and foam lamination, this film improves energy efficiency, enhances comfort, and reduces heating costs. Customizable to meet specific project needs, AF+LDPE film is a high-quality, reliable, and environmentally friendly choice for modern insulation systems.
