PU Sealed Rock Wool Sandwich Panels
Fireproof Core — PUR-Sealed Edges — Ultimate Protection
PU Sealed Rock Wool Sandwich Panel Supplier China — Combining the fire resistance of rock wool with the structural strength and sealing performance of polyurethane edge encapsulation. The ideal solution for high-performance building envelopes requiring both fire safety and thermal efficiency.
What Is PU Sealed Rock Wool Sandwich Panel?
Hybrid Design • Best of Both Materials
PUR edge-sealed rock wool sandwich panels feature a mineral rock wool core with polyurethane (PUR) foam injected along all four edges during manufacturing. This hybrid design combines the non-combustible fire protection of rock wool (Euroclass A1/A2) with the superior edge sealing, structural bonding, and thermal bridge prevention of PUR foam.
The PUR edge encapsulation eliminates exposed mineral fibers at panel joints, prevents fiber shedding during installation, provides a continuous thermal barrier at panel edges, and significantly improves the overall structural strength of the panel system. Widely used in cold storage, food processing, pharmaceutical, and fire-sensitive industrial buildings.
Standards: GB/T 23932 / EN 14509 / AS/NZS 2728 / BS 476.
Non-Combustible Rock Wool Core
Euroclass A1/A2 rated rock wool core. Withstands temperatures above 1,000°C.
PUR Edge Sealing
PUR foam at panel edges eliminates thermal bridging. Continuous insulation across joints.
Enhanced Strength
PUR edge sealing bonds steel faces and rock wool core, improving load-bearing capacity.
No Fiber Shedding
PUR encapsulation prevents loose rock wool fibers from escaping at panel edges.
Moisture Resistance
PUR sealed edges act as vapor barrier at panel joints. Prevents moisture ingress.
Precise Fit
PUR sealed edges provide stable dimensions. Shiplap joints reduce air leakage.
Panel Structure
Three-Layer Composite with PUR Edge Encapsulation
Roof Shape
Wall Shape
Top steel sheet (0.40–0.80mm PPGI/PPGL) + Rock Wool Core (80–150kg/m³) + PUR Edge Frame + Bottom steel sheet
| Layer | Material | Function |
|---|---|---|
| Top Steel Face | Color Coated Steel (PPGI/PPGL) | Weather protection, strength |
| Core Insulation | Rock Wool (80–150kg/m³) | Fire protection, insulation |
| PUR Edge Frame | Polyurethane Rigid Foam | Edge sealing, thermal bridge prevention |
| Bottom Steel Face | Color Coated Steel (PPGI/PPGL) | Interior finish, strength |
Technical Specifications
PUR Edge-Sealed Rock Wool Panel Parameters
| Parameter | Value / Option |
|---|---|
| Face Material | Color Coated Steel (PPGI/PPGL), 0.40–0.80mm |
| Core Material | Rock Wool, Density: 80–150 kg/m³ |
| Edge Sealing Material | PUR Rigid Foam, Edge width: 15–30mm |
| Panel Thickness | 50/60/75/80/100/120/150/200mm |
| Effective Width | 950/1000/1150mm |
| Panel Length | Custom cut, up to 12,000mm |
| Thermal Conductivity | λ = 0.040–0.050 W/m·K (rock wool) |
| Fire Rating (Core) | Euroclass A1/A2-s1,d0 — Non-combustible |
| Fire Resistance | Up to 120 minutes |
| Acoustic Performance | Rw = 30–45 dB |
| Panel Weight | 16–32 kg/m² |
| Service Temperature | -50°C to +80°C |
| Surface Profile | Flat/Micro-ribbed/Trapezoidal/Corrugated |
| Joint Type | Shiplap/T&G (PUR seal integrated) |
| Color | RAL Colors / Customized |
Applications
Where Fire Safety Meets Thermal Performance
Cold Storage
Fire-safe insulation for temperature-controlled environments
Food Processing
Hygienic, fiber-free panels for food production
Pharmaceutical
Clean sealed panels for drug manufacturing
Clean Rooms
No fiber shedding, excellent fire rating
Industrial
Fire-resistant cladding for factories
High-Rise
Non-combustible for multi-story buildings
Logistics
Large-span systems for distribution hubs
Fire Partitions
120 min fire resistance for compartment walls
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