Description
Yirong Group’s polyurethane edge banding rock wool board is a high-performance composite board developed to meet the increasingly stringent demands of modern industrial and civil buildings for fire safety, thermal insulation, energy saving, and durability. It cleverly combines the Class A fire resistance of rock wool with the excellent thermal insulation and sealing properties of polyurethane, using innovative edge-sealing technology to provide global users with a nearly flawless enclosure system.
Structural Composition
The polyurethane edge banding rock wool board consists of three layers of functional materials, foamed and formed in one step on a fully automated continuous production line.
Surface Layer (Metal Panel): The top and bottom layers use high-quality galvanized or aluminized zinc color steel sheets, with stainless steel and aluminum sheets as options, providing strength and weather resistance.
Core Layer (Insulation Core Material): The core is filled with high-density rock wool, and the fiber structure perpendicular to the panel ensures excellent fire resistance and thermal insulation performance.
Edge Sealing (Polyurethane Sealant): The longitudinal joints around the edges of the board are completely sealed with rigid polyurethane. This dense polyurethane edge sealing not only eliminates thermal bridging at the board seams but also completely isolates the rock wool core from external moisture, greatly improving the overall airtightness, watertightness, and mechanical strength of the board.
This structure of “two steel plates + rock wool core + four-sided polyurethane edge sealing” fundamentally solves the problems of traditional pure rock wool boards, such as easy moisture absorption, significant thermal bridging, and insufficient strength.
Product Parameters
The following are the standard supply parameters of Yirong Group, which can also be customized according to project requirements:
Panel Type: Wall panels (concealed/exposed nail type), roof panels (high pressure resistance and waterproof design with corrugated peaks).
Standard Width: 1000 mm (effective coverage width).
Thickness Range: 50 / 75 / 100 / 120 / 150 / 200 mm.
Metal Sheet: Galvanized/aluminized zinc color-coated steel sheet, thickness 0.4 – 0.8 mm; stainless steel, aluminum sheet, etc. are optional.
Rock Wool Core Material Density: ≥ 100 kg/m³ (high-density basalt rock wool, 120-150 kg/m³ can be customized).
Polyurethane Edge Sealing Density: ≥ 40 kg/m³, thermal conductivity ≤ 0.024 W/m·K.
Core Material Thermal Conductivity: Rock wool ≤ 0.040 W/m·K, average overall thermal conductivity of the entire panel ≤ 0.043 W/m·K.
Fire Rating: Rock wool combustion performance Class A, non-combustible (complies with EN 13501-1 / GB 8624 Class A1).
Sound Insulation: Weighted sound insulation Rw ≥ 30 dB (typical value for 100mm thick plate).
Bending Capacity: Designed according to span and load, mid-span deflection ≤ L/200.
Surface Coating: Polyester (PE), High Weather Resistant Polyester (HDP), Fluorocarbon (PVDF), etc.
Color: According to RAL color chart or customized according to customer samples
Accessories Supply: A complete set of accessories can be provided, including gutters, edge trim, bolts, sealing strips, skylights, doors and windows, truly achieving one-stop shopping.
Core Advantages Comparison
| Comparison Item | Pure Rockwool Panel | Pure PU Panel | PUR-Sealed Rockwool Panel |
|---|---|---|---|
| Fire Rating | Class A | Class B1/B2 | Class A (A-grade core) |
| Waterproof & Moisture Resistance | Poor, easily absorbs water | Excellent | Excellent (fully sealed with PUR) |
| Thermal Bridging | Obvious at joints, prone to condensation | Slight at joints | Almost no thermal bridging |
| Panel Flatness | Weak | Good | High strength, very flat |
| Durability | Degrades after moisture absorption | Good | Long-term stability |
Product Features
Class A Non-combustible, Intrinsically Safe: The core material is high-quality rock wool, achieving a Class A fire performance rating. It can withstand temperatures exceeding 1000℃ and will not burn or produce toxic fumes in a fire, buying valuable time for evacuation and rescue.
Completely Eliminates Cold Bridges, Prevents Condensation: The unique polyurethane edge sealing creates a closed insulation layer, completely cutting off thermal bridges at the board joints and preventing condensation and mold growth caused by indoor and outdoor temperature differences.
Ultra-Low Thermal Conductivity, High Energy Efficiency: Rock wool itself has a low thermal conductivity. Combined with the excellent thermal insulation properties of polyurethane, the entire board has excellent thermal insulation effects, significantly reducing building operating energy consumption.
Water-Repellent and Moisture-Proof, Long Lifespan: The polyurethane edge sealing and high closed-cell ratio completely seal the rock wool core, resulting in extremely low water vapor penetration. This ensures the core material remains dry for a long time, its insulation performance does not diminish, and its service life far exceeds that of ordinary rock wool boards.
High strength, flatness, and excellent span: Polyurethane edge sealing enhances the overall rigidity and bending load-bearing capacity of the panels. Even in large-span applications, the panel surface remains flat, exhibiting strong wind pressure resistance. After installation, the wall and roof lines are smooth and aesthetically pleasing.
Sound insulation and noise reduction: The fiber structure of rock wool possesses excellent sound absorption and insulation properties, creating a quiet and comfortable working environment indoors.
Quick installation and seamless integration: The standard plug-in male and female connector design, combined with special sealing strips, allows for simple and quick installation and perfectly matches a full range of accessories such as gutters, doors, windows, and ventilators.
Application Areas
With its superior overall performance, polyurethane edge banding rock wool boards are widely applicable to various climate zones worldwide and buildings with high fire safety standards.
Industrial plants: Such as steel structure workshops, manufacturing bases, power plants, and chemical plants, especially suitable for heavy-duty factory enclosures requiring crane beams.
Logistics and warehousing: Ambient temperature and constant temperature warehouses and logistics centers, meeting the needs of rapid construction and energy-saving warehousing.
Public Buildings: Stadiums, exhibition centers, airport terminals, and large shopping malls, balancing aesthetics with fire safety in spacious environments.
Commercial and Office Buildings: Non-load-bearing partitions and curtain wall systems for office buildings, pursuing modern aesthetics and interior comfort.
Food and Pharmaceutical Buildings: Food processing plants, pharmaceutical workshops, and cold storage enclosures with strict requirements for cleanliness and temperature control.
Overseas Prefabricated Buildings: Particularly suitable for rapid prefabrication projects along the Belt and Road Initiative, in the Middle East, Southeast Asia, and Central Asia, enabling factory prefabrication, containerized shipping, and rapid on-site assembly.
Our Commitment
Choosing Yirong Group’s polyurethane edge banding rock wool board means you’re not just getting a high-quality panel, but a complete building envelope system solution. From design refinement and customized production to container shipping and overseas installation guidance, we provide a one-stop service, saving global clients time and effort, and delivering safe, energy-efficient, and aesthetically pleasing high-quality buildings on time.
