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PUR Pre-insulated HVAC Ductwork
PUR Pre-insulated HVAC Ductwork, alternatively designated PU aluminum foil duct panel and PU sandwich duct panel, is a high-spec composite material intended for HVAC (Heating, Ventilation and Air Conditioning) air duct applications.
The product adopts a trilaminar laminated structure composed of:
Dual outer facings: High-tensile aluminum foil, supplied in plain or embossed variants
Internal core substrate: Rigid polyurethane (PU) foam, functioning as structural backing and thermal insulating medium
Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 40-45kg/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 & Physical Properties of PUR Pre-insulated HVAC Ductwork
| Technical Parameters | Typical Value / Standard | Engineering Significance |
| Density (Core Foam) | 40-45kg/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. |
Production and Installation of PUR Pre-insulated HVAC Ductwork
Factory-fabricated panels achieve uniform density and high dimensional accuracy, satisfying the specifications for standardized mass production and unified construction norms.
Field spray foaming technology is developed for non-standard duct systems and complex architectural structures. The sprayed PUR foam achieves full surface lamination without insulation voids. This core performance advantage is unmatched by other insulation materials.
From an installation perspective, PUR Pre-insulated HVAC Ductwork offers favorable processability. Its flexible properties facilitate simple cutting and fabrication, removing the reliance on large specialized equipment. The entire installation procedure can be carried out by a single operator.
Moreover, the panel possesses strong interfacial adhesion. It creates stable connections with color steel plates, steel sheets, cement mortar and other substrates, and maintains excellent anti-peeling and anti-separation performance during operation.
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