Fireproof PU Sandwich Panel (Polyurethane Sandwich Panel) is a type of building material used for walls, roofs, and partitions in industrial,
commercial, and cold storage facilities.
PU Sanwich Panel consists of three layers:
1.Two Outer Layers (Facings) – Typically made of metal sheets (galvanized steel, aluminum, or stainless steel) or other rigid materials
like cement board or PVC.
2.Middle Core – A rigid polyurethane (PU) foam insulation layer, known for its excellent thermal efficiency, lightweight properties, and
structural strength.
Key Features of Fireproof PU Sandwich Panel:
High Thermal Insulation – PU foam has one of the best insulation values (low U-factor) among sandwich panel cores, reducing energy costs.
Lightweight & Durable – Strong yet easy to install, making it ideal for prefabricated construction.
Fire Resistance – Some PU panels are treated with fire-retardant additives (Class B1/B2 fire rating depending on the formulation).
Moisture & Chemical Resistance – Suitable for cold storage, food processing plants, and humid environments.
Sound Insulation – Provides decent acoustic performance.
Packing:1. Standard export package or as per customer's request
2. Standard size containers,20'GP,40'GP or as per customer's request
Fireproof PU Sandwich Panel Applications:
Cold Storage & Refrigerated Warehouses (due to superior insulation)
Industrial Sheds & Factories
Commercial Buildings (offices, showrooms)
Clean Rooms & Pharmaceutical Facilities
Residential Prefab Houses
Comparison with Other Sandwich Panels:
PU vs PIR (Polyisocyanurate): PIR has better fire resistance but is costlier.
PU vs EPS (Expanded Polystyrene): PU offers higher insulation and strength than EPS.
PU vs Rockwool: Rockwool is non-combustible but heavier and less insulating.
Project Case (Fireproof PU Sandwich Panel)
Polyurethane material porosity structure is stable, basically closed pore structure, not only excellent insulation performance, and freeze-thaw resistance, sound absorption is also good. The average life span of rigid foam polyurethane insulation structure can reach more than 30 years
under the condition of normal use and maintenance. It is able to achieve the normal use conditions of the structure's life span without damage
under dry, humid or galvanic corrosion, as well as due to exogenous influences such as the growth of insects, fungi or algae or due to damage
by rodents.
Polyurethane has moisture-proof and waterproof performance. The closed-hole rate of rigid polyurethane is over 90%, which is a water-repellent material and will not increase the thermal conductivity due to moisture absorption, and the wall will not seep through water.
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