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PU Pre-insulated Aluminum Duct Panel
PU Aluminum Duct Sheet (also known as PU aluminum foil duct panel or PU sandwich duct panel) is a high-performance composite material used primarily in HVAC (Heating, Ventilation, and Air Conditioning) air duct systems.
It consists of three bonded layers:Two Outer Layers: High-strength aluminum foil (typically embossed or plain).Core Layer: Rigid polyurethane (PU) foam, which acts as both a structural support and thermal insulator.
Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)
Core Technical Parameters and Physical Properties of PU Pre-insulated Aluminum Duct Panel
| Technical Parameters | Typical Value / Standard | Engineering Significance |
| Density (Core Foam) | 45-55kg/m3 | Balances lightweight design with excellent compressive structural strength. |
| Thermal Conductivity | ≤0.022w/m.k | Extremely low. Outperforms traditional glass wool (~0.040), improving thermal insulation by nearly 40%. |
| Fire Rating | Class B1 (GB 8624) | Meets fire safety and flame retardant requirements for most commercial and residential buildings. |
| Closed Cell Ratio | ≥95% | Effectively blocks water vapor penetration, preventing internal mold and performance degradation. |
| Working Temperature | -60℃--+80℃ | Adapts to various harsh environments, from extreme cold to high-temperature air transmission. |
Economic and Construction Efficiency of PU Pre-insulated Aluminum Duct Panel
Although the raw material cost per square meter of PU pre-insulation panels is higher than that of traditional galvanized iron sheets, from the perspective of overall installation cost and operating cost, it has extremely high cost-effectiveness:
Traditional ductwork process: Cutting and shearing of iron sheets -> Making the bite edges -> On-site hoisting -> Secondary wrapping with insulation cotton -> Coiling protective tape (a cumbersome process)
PU pre-insulated air duct: Plate cutting -> Apply adhesive and lay out lines -> 45° joint bonding -> Tape sealing -> Direct hanging (one-step process)
Project duration reduced by over 50%: Traditional ducts require two processes - "installing the ducts first, then covering with insulation cotton"; while PU sheets "come with built-in insulation", they can be formed by using dedicated cutting tools, glue bonding, and aluminum foil tape sealing, resulting in a 2 to 3 times increase in construction speed.
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