Aluminum XPS Sandwich Panel

Aluminum XPS sandwich panels combine extruded polystyrene (XPS) foam cores with aluminum skins bonded by polyurethane-based adhesives. The aluminum facings use alloy grades including 1050, 1060, 3003, and 6061, with thicknesses from 0.1 to 3.0 millimeters. Surface treatments include anodizing, painting, embossing, brushing, and sandblasting, with RAL color options available. The rigid closed-cell XPS core provides thermal conductivity of 0.028 to 0.034 W/m·K, compressive strength from 250 to 800 kPa, and water absorption below 0.3%, with densities between 30 and 45 kg/m³.

These panels deliver structural stability with reduced weight, offering moisture and corrosion resistance alongside flame-retardant core grades rated Class B-s1,d0 (EN 13501-1). The XPS core maintains performance across temperatures from -60°C to +80°C. Both aluminum and XPS components are recyclable, and panels accommodate CNC (Computer Numerical Control) machining for precise fabrication.

Panel configurations range from 10 to 150 millimeters in total thickness, with widths up to 2600 millimeters and lengths to 12,000 millimeters. Manufacturing employs vacuum compression bonding techniques to prevent delamination and ensure flat, integrated assemblies.

Applications include modular buildings, exterior walls, roofs, and interior partitions in construction; refrigerated trucks, cold storage facilities, and vehicle bodies in transportation; and aerospace, marine, and industrial equipment housings where thermal insulation and lightweight structural performance are required.

Get Custom Aluminum XPS Sandwich Panel Solutions from RaxPanel

RaxPanel is a direct manufacturer of composite panels based in Hebei, China. Our Aluminum XPS Sandwich Panels bond aluminum alloy skins to a rigid, closed-cell extruded polystyrene (XPS) foam core, producing panels engineered for thermal insulation, compressive strength, and moisture resistance in cold chain and temperature-controlled applications.

We build each panel to order. Customers specify the aluminum grade and skin thickness, the XPS core density, the total panel thickness, width, and length, along with the surface finish and color. Vacuum compression bonding is used to achieve uniform adhesion and flat, delamination-resistant assemblies, with CNC machining available for precise fabrication.

Our engineering team works with customers to match panel specifications to the demands of refrigerated truck bodies, cold storage facilities, modular construction, and industrial enclosures. Contact us to discuss your project requirements and receive a customized quotation.

Parameter Value / Data Range
XPS FOAM CORE PROPERTIES
Density 30 – 45 kg/m³
Thermal Conductivity 0.028 – 0.034 W/m·K
Compression Resistance 250 – 800 kPa
Tensile Strength 600 – 1200 kPa
Water Absorption < 0.3 %
Dimensional Stability < 1.0 %
Fire Rating B1
Operating Temperature Range -60°C to +80°C
ALUMINUM SKIN PROPERTIES
Alloy Grades 1050, 1060, 3003, 6061, etc.
Surface Treatment Anodizing, Painting, Embossing, Brushing, Sandblasting, Polishing, etc.
Surface Color RAL color series or custom patterns
Thickness Range 0.1 – 3.0 mm
COMPOSITE PANEL SPECIFICATIONS
Total Panel Thickness 10 – 150 mm
Panel Width ≤ 2600 mm
Panel Length ≤ 12000 mm





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    Aluminum XPS Sandwich Panel Selection & Engineering Guide

    When building refrigerated truck bodies, cold storage envelopes, or high-humidity architectural cladding, moisture resistance and compressive rigidity are critical. Aluminum XPS (Extruded Polystyrene) Sandwich Panels bond durable aluminum alloy skins onto a rigid, closed-cell XPS foam core. At RaxPanel, our engineering team manufactures these composite panels to deliver a lightweight structural panel with near-zero moisture absorption (<1%) and exceptional thermal insulation (λ ~ 0.028 – 0.030 W/m·K).

    💡 Pro Tip: Zero Moisture Absorption for Sub-Zero Freeze Protection
    Unlike open-cell or expanded foams that absorb ambient condensation over time—leading to loss of R-value insulation and internal mold—closed-cell XPS foam maintains its thermal barrier even under severe freeze-thaw cycles. RaxPanel applies specialized two-component polyurethane adhesives during automated vacuum lamination to prevent delamination during cyclical thermal expansion.

    1. How to Choose the Right Aluminum Alloy and Skin Thickness

    The aluminum skin thickness (typically 0.3mm to 2.0mm) provides outer mechanical strength and impact resistance. We offer three primary aluminum alloys for specific field conditions:

    • 1100 / 1050 Alloy: High ductility and smooth finish; ideal for interior partitions, ceiling panels, and indoor equipment housings.
    • 3003 Alloy (Al-Mn): Enhanced tensile strength and impact resistance; specified for commercial refrigerated truck side-walls and exterior building facades.
    • 5005 Alloy (Al-Mg): Superior anti-corrosion performance against salt spray; recommended for marine cabin enclosures and coastal cold chain facilities.

    2. How Well Does XPS Foam Insulate and Withstand Heavy Loads?

    Extruded Polystyrene foam is manufactured through a continuous extrusion process, producing a tight, closed-cell structure with strong physical properties:

    Performance Metric RaxPanel XPS Core Standard Engineering Advantage
    XPS Core Density 30 kg/m³ to 45 kg/m³ Lightweight structural rigidity for easy handling and transport
    Thermal Conductivity (λ) ~ 0.028 – 0.030 W/m·K High energy efficiency for cold rooms and refrigerated transport
    Compressive Strength 300 kPa to 800 kPa (0.3 – 0.8 MPa) Resists crushing under mechanical loading and floor weight
    Water Absorption Ratio < 1.0% (Volumetric) Complete barrier against moisture, rot, and thermal insulation degradation

    3. Which Surface Finish Will Keep Your Panels Looking New for 20+ Years?

    Choosing the right pre-painted roller coating guarantees long-term appearance and protection against aggressive environments:

    • PVDF Coating (70% PVDF Fluorocarbon Coating): 20+ Year exterior warranty against intense UV radiation, fading, chalking, and industrial pollutants on building facades.
    • FEVE Coating: High gloss retention and vivid color durability for architectural features.
    • PE Coating: Cost-effective finish for indoor wall partitions, available in wood grain, stone, and solid metallic tones.

    4. How Fire-Safe and Soundproof Are These Panels?

    🛡️ Compliance & Acoustic Notes:

    • Fire Safety: Flame-retardant XPS core formulations comply with EN 13501-1 Class B-s1,d0 and EN 13501-1 Class B1 building safety standards.
    • Sound Damping: The composite foam core reduces environmental noise transmission by 24 dB to 30 dB relative to solid metal sheets.

    5. Where Are Aluminum XPS Panels Most Commonly Installed?

    🚚 Refrigerated Truck Bodies & RV Walls

    Replaces heavy steel in cold chain trailers and RV bodies, lowering vehicle curb weight and boosting payload efficiency.

    🏢 Cold Storage & Building Envelopes

    Provides moisture-proof R-value thermal insulation for walk-in freezers, food processing plants, and exterior wall cladding.

    6. How to Cut, Groove, and Seal Edges During Installation

    Aluminum XPS panels machine easily on-site using standard woodworking tools or CNC routers:

    • V-Groove Corner Folding: Cut 90° V-grooves into the back skin to bend clean architectural corners without surface paint cracking.
    • Edge Protection: Edge sealing options include open edges, folded skin edges, or interlocking aluminum extrusions to prevent moisture ingress.
    🏭 Factory-Direct Supply & Custom Fabrication
    RaxPanel supplies custom-sized composite panels directly to project sites worldwide, with daily output exceeding 1,500 m² and strict pre-dispatch quality control on every batch.

    Frequently Asked Questions (FAQS)

    1. What are the standard panel thicknesses, maximum lengths, and width options available for Aluminum XPS panels?
    Standard panel thicknesses range from 10mm up to 100mm, with custom core options up to 150mm. Standard widths include 1000mm, 1220mm, and 1500mm, with maximum single-sheet lengths up to 5800mm (5.8m) to fit standard ocean freight container shipping dimensions. Custom aluminum skin thicknesses (0.3mm to 2.0mm) can be tailored to structural load requirements.
    2. What are the primary physical and thermal advantages of Extruded Polystyrene (XPS) foam cores?
    Extruded Polystyrene (XPS) features a 100% closed-cell foam structure that delivers near-zero water absorption (<1%), high compressive strength (300-800 kPa), and excellent thermal conductivity (λ ~ 0.028 – 0.034 W/m·K), ensuring long-term thermal R-value insulation without moisture degradation.
    3. How do Aluminum XPS panels perform under sub-zero freezer and high-humidity environments?
    Because the XPS core is impervious to ambient humidity, it prevents condensation absorption, mold growth, and ice expansion during repeated freeze-thaw cycles in cold storage rooms and refrigerated truck bodies.
    4. What fire safety ratings and quality certifications do these composite panels meet?
    Fire-retardant core formulations meet EN 13501-1 Class B-s1,d0 and EN 13501-1 Class B1 fire performance standards. Manufacturing quality is governed under ISO9001 management systems, with raw material performance verified under SGS, CE, and REACH testing for international compliance.
    5. What is the difference between PVDF, FEVE, and PE coatings for outdoor weatherability?
    70% PVDF Fluorocarbon Coating-based PVDF (Polyvinylidene Fluoride) coating provides a 20+ year weatherability warranty against UV fading, chalking, and acid rain on exterior building facades. FEVE delivers high gloss retention for architectural landmarks, while PE (Polyethylene) coating is cost-effective for interior wall partitions and signage.
    6. Can Aluminum XPS panels be CNC grooved, bent, or edge-sealed on-site?
    Yes. The pre-painted aluminum skins can be V-grooved at 90° or 135° on the reverse skin using standard CNC routers or hand tools, allowing manual edge folding into architectural cassettes without surface paint cracking. Edge sealing options include open edges, folded skin capping, or interlocking aluminum extrusion profiles.
    7. How are large panel shipments packaged to prevent freight damage during ocean transit?
    Panels are packed with protective PE film on both aluminum skins, separated by inter-sheet foam layers, and secured on heavy-duty export wooden pallets or CKD (Completely Knocked Down) steel crates. This prevents surface scratching or edge impact damage during 20ft and 40ft container shipping.


    Sandwich Panel Manufacturer

    Custom Core & Skin • Tailored Dimensions





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