Polyurethane (PUR/PIR) partition sandwich panels are engineered modular components designed for internal walls, enclosures, and non-load-bearing partitions in industrial, commercial, and controlled environments. Comprising two metal facings bonded to a high-density rigid polyurethane core under continuous high-pressure foaming, these panels provide integrated thermal insulation, structural rigidity, and clean surface finishes in a single installation step.
Unlike traditional multi-layer stud-and-drywall construction, prefabricated polyurethane sandwich panels eliminate wet trades, reduce structural dead load, and enable rapid, dry assembly for large-scale commercial spaces.
Technical Specifications
|
Technical Parameter |
Standard Specification Options |
Testing Standard / Method |
|
Panel Thickness |
50mm, 75mm, 100mm, 125mm, 150mm |
ISO 845 / EN 14509 |
|
Standard Width |
1000mm / 1150mm (Modular) |
Production Tolerance +/- 1.5 mm |
|
Face Metal Materials |
Prepainted Galvanized Steel (PPGI), Stainless Steel (304/316), Aluminum |
ASTM A755 / EN 10169 |
|
Face Sheet Thickness |
0.4mm – 0.8mm |
Micrometer Gauge Check |
|
Core Material |
Rigid Polyurethane (PUR) / Polyisocyanurate (PIR) |
DIN 4102 / EN 13165 |
|
Core Density |
40 +/- 2 kg/m3 |
ISO 845 |
|
Thermal Conductivity (Lambda) |
<= 0.022 W/m.K |
EN 12667 / ASTM C518 |
|
Fire Behavior (Reaction) |
B2 / B1 (DIN 4102) or B-s2, d0 (EN 13501-1) |
EN 13501-1 |
|
Standard Length |
Cut to project specification (up to 12,000mm for transport) |
Field Measure / Shop Drawings |
Key Features
High Thermal Efficiency: Closed-cell ratio exceeding 95% minimizes thermal bridging, maintaining strict internal climate control for temperature-regulated zones.
Structural Rigidity-to-Weight Ratio: The composite sandwich action utilizes face sheet tensile strength and core shear resistance, allowing longer unsupported spans than traditional sheet partitions.
Controlled Dimensional Tolerance: Continuous double-belt laminator production ensures strict thickness and squareness tolerances, preventing gaps during installation.
Moisture and Vapor Barrier: Impermeable closed-cell polyurethane structure prevents internal moisture condensation and inhibits mold or bacterial growth.
Applications
Cleanroom Enclosures: Pharmaceutical, microelectronics, and biotechnology manufacturing facilities requiring flush joints, chemical resistance, and particle-free surfaces.
Cold Storage & Food Processing: Intermediate partitions and perimeter walls for refrigerated warehouses, commercial kitchens, and abattoirs requiring low heat transfer coefficients.
Industrial Plant Compartmentalization: Factory offices, clean manufacturing bays, equipment enclosures, and hazardous-free partition zones.
Commercial Interiors & Logistics Hubs: High-durability dividing walls in distribution centers, data centers, and multi-tenant commercial warehouses.
Surface & Finish Options
Surface performance depends on environmental exposure. We offer multiple metal facings and coating systems matched to specific operating conditions:
Coatings:
Polyester (PE): Standard indoor commercial applications.
Silicon Modified Polyester (SMP) / PVDF: Enhanced UV and chemical resistance for industrial environments.
Food-Safe PVC / Plastisol: Designed for food processing zones requiring frequent washdown with sanitizing agents.
Profiles:
Micro-ribbed / Linear Fluted: Adds rigidity and hides minor installation handling marks.
Flat / Smooth: Standard for cleanrooms, pharmaceutical plants, and aesthetic architectural partitions.
V-Grooved: Provides clean shadow lines for commercial interior aesthetics.
Customization
Projects require tailored solutions. Our manufacturing lines support custom engineering specifications:
Length Cutting: Panels cut precisely to project shop drawings to minimize on-site cutting waste.
Reinforcements: Integrated internal steel or timber inserts pre-installed at specified points for hanging heavy equipment, ductwork, or utility panels.
Material Combinations: Asymmetric configurations available (e.g., stainless steel on the clean side, galvanized steel on the utility corridor side).
Integrated Conduits: Custom internal routing channels or pre-cut chases for electrical wiring and gas lines upon request.
Manufacturing & Quality Control
Continuous Lamination Line: High-pressure foaming injected via multi-component mixing heads inside a heated double-belt press, ensuring uniform core density and permanent chemical bonding between steel facings and polyurethane.
Raw Material Verification: Incoming steel coils are tested for galvanization weight (e.g., Z275) and coating thickness via X-ray fluorescence (XRF); foaming chemicals are metered with gravimetric control systems.
In-Line Quality Inspection: Automated laser monitoring checks panel thickness and camber in real-time during production. Destructive peel tests are conducted per batch to verify core shear adhesion strength.
Traceability: Each production bundle is labeled with a unique barcode linking to raw material batch numbers, foaming pressure logs, and operator records.
Installation & Joint System
Tongue-and-Groove Interlock: Precision-milled male and female edges ensure tight, self-aligning mechanical connection, reducing air leakage and thermal loss.
Fastening Method: Concealed fastener fixing clips or through-fastened structural screws with sealing washers, depending on aesthetic and structural requirements.
Accessory Integration: Compatible with extruded aluminum framing, factory-formed corner flashings, PVC sanitary coving, and pre-hung cleanroom doors/windows.
Packaging & Logistics
Protective Film: Peelable polyethylene protective film applied to both face sheets to prevent scratching during transit and handling.
Packaging Structure: Panels are stacked with expanded polystyrene (EPS) edge protectors, separated by wooden spacers, and secured with heavy-duty steel strapping.
Container Loading: Engineered loading plans for 20GP/40HQ containers or open-top flat racks to maximize payload efficiency and prevent transit damage or panel flexing.
FAQ
Q: What is the fire rating certification of your partition polyurethane panels?
A: Standard PIR core panels achieve B-s2, d0 classification under EN 13501-1 (or B1/B2 per DIN 4102). Test reports and certificates from accredited third-party laboratories are available upon request for project submittals.
Q: Can these panels be dismantled and relocated if building layouts change?
A: Yes. Because they utilize modular tongue-and-groove joints and mechanical fasteners, panels with exposed or semi-concealed fixing systems can be uninstalled and reused in modular industrial layouts.
Q: What is the maximum unsupported vertical span for these partition panels?
A: Unsupported span depends on panel thickness and wind/pressure load requirements. For a standard 100mm indoor partition under normal pressure differentials, unsupported vertical spans up to 4.5 to 5.0 meters are structurally achievable. Detailed span tables are available from our engineering team.
Q: How do you handle service penetrations (electrical sockets, piping) during installation?
A: Cutouts for electrical boxes and pipes can be made on-site using standard metal-cutting tools. We supply matching aluminum or PVC trim flashings to seal cut edges and maintain sanitary or aesthetic standards.
Q: What is your standard production lead time for custom-length orders?
A: Standard production lead time ranges from 15 to 25 days upon receipt of approved shop drawings and deposit, depending on coil stock availability and total project square meterage.
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