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PU PID Boards
Featuring high-performance PU foam as the core substrate, PU PID Boards are lightweight composite materials that combine thermal insulation, structural strength and certified fire resistance as a complete assembly, widely applied in HVAC construction.
This integrated modular duct solution reduces system energy loss, expedites on-site installation, and sustains stable ventilation efficiency during long-term operation.
What Is It Made Of?
The PU HVAC Air Ducts are built as a rigid "sandwich" panel:
Core Material: A rigid polyurethane (PU) foam, which provides excellent thermal insulation . Some variations use PIR (polyisocyanurate) for enhanced fire resistance.
Facing Material: Both sides of the foam core are typically laminated with an aluminum foil layer. For external or more demanding applications, the facing can be a thicker aluminum sheet or pre-painted galvanized steel. For cleanroom environments, a smooth aluminum foil finish is often used.
Integrated structural and thermal insulation solution of PU PID Boards
Breaking through the conventional single positioning of similar panels merely serving as thermal insulation layers, this PU PID Boards boasts a compressive strength exceeding 2.5 MPa. It delivers reliable mechanical performance and can be directly deployed as a lightweight load-bearing structural component without relying on auxiliary supporting materials.
When applied to the fabrication of cold chain logistics vehicles, extra steel framework supports are no longer required. Simply assembling these panels enables the integrated fulfilment of two core demands. On one hand, it provides outstanding thermal insulation capable of sustaining temperature stability for up to 48 hours. On the other hand, it achieves structural load-bearing capacity of 300 kg per square meter. This integrated structural-insulation design simplifies overall fabrication procedures and cuts the total construction cycle by 40%.
Selection Suggestions of PU PID Boards
1.Choose according to the environment
Outdoor or high-humidity environments: Prioritize the use of 200-micron aluminum foil or color steel plate surface layers, combined with anti-mold coatings.
Clean room: Single-sided smooth aluminum foil (Ra≤0.8 μm) is used, with seamless welding at the seams.
2. Select according to the system pressure
Low-pressure system (≤1000 Pa) : 20mm thick standard plate.
Medium and high pressure system (1000-4500 Pa) : 25-30 mm thick reinforcing plate, with double-layer aluminum foil or galvanized steel plate surface layer.
3. Select in accordance with fire protection requirements
High-risk areas (such as underground garages) : A1 grade color steel plate surface layer + B1 grade core material, certified by EN 13501-1.
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