PU Sandwich Panels

Description

1. Product Overview
PU (Polyurethane) Sandwich Panels are high-rigidity, composite structural elements consisting of a rigid polyurethane foam core fully bonded between two corrosion-resistant metal facings (typically pre-painted steel or aluminum). Designed primarily for industrial building envelopes, cold storage facilities, and cleanroom partitions, these panels deliver a class-leading combination of thermal insulation (lambda as low as 0.022 W/m·K) and structural integrity in a single lightweight solution. Strategically, they are critical for global markets seeking to reduce building energy consumption by up to 40% compared to traditional masonry or fiberglass-insulated systems, directly supporting net-zero operational carbon goals.

2. Key Specifications & Technical Characteristics

• Material Components:

  • Core: Rigid polyurethane foam (PUR/PIR), density 40–45 kg/m³

  • Facings: 0.4–0.8 mm thickness, hot-dip galvanized steel (AZ100–AZ150) or AA3005 aluminum alloy

  • Sealant: Pre-gasketed EPDM joints or structural polyurethane adhesive

• Physical Characteristics:

  • Standard thickness: 50 / 75 / 100 / 120 / 150 mm

  • Effective width: 1,000 mm or 1,150 mm

  • Thermal conductivity (λ): 0.018–0.024 W/m·K (aged)

  • Fire rating: Class B-s3, d0 (EN 13501-1) or ASTM E84 Class 1

  • Compressive strength: ≥150 kPa (at 10% deformation)

• Packaging Options: Steel-strapped pallets with PE shrink wrap, edge protectors, and corner guards. Labels with batch number, thickness, and fire rating.

• Shelf Life: 12 months (indoor, dry storage at -10°C to +40°C, RH ≤70%)

3. Core Industrial Applications

• Cold Chain & Logistics: Walk-in freezers (-25°C), refrigerated warehouses, and blast chillers. Outperforms polystyrene (EPS) with 2x greater thermal retention and zero moisture absorption, reducing compressor runtime by 30%.

• Industrial Manufacturing Plants: Cleanrooms, paint booths, and equipment enclosures. The closed-cell PU core resists chemical fumes and oil aerosols, while the smooth facings enable Class 100,000 cleanroom compliance without secondary liners.

• Agricultural & Livestock Buildings: Poultry houses, dairy parlors, and mushroom farms. PU’s inherent resistance to ammonia corrosion and rodent nesting gives a 15+ year service life vs. 6–8 years for mineral wool panels.

• Modular Construction: Prefabricated offices, site huts, and emergency shelters. Lightweight design (10–15 kg/m²) cuts transport and crane costs by 50% compared to concrete sandwich panels.

4. Competitive Advantages

• Quality Consistency: ISO 9001:2025 continuous process monitoring with ±0.5 mm thickness tolerance and peel strength >0.12 N/mm² per EN 14509.

• Supply Reliability: Three geographically redundant manufacturing hubs (Asia, MENA, LatAm) guaranteeing 98% on-time-in-full (OTIF) delivery for project volumes up to 200,000 m²/month.

• Logistics Capability: Pre-slit panel lengths (2 m to 12 m) to maximize container cube; interlocking tongue-and-groove design reduces onsite cutting waste by <2%.

• Price Competitiveness: Direct procurement of MDI/polyol raw materials via annual futures contracts – pass-through savings of 12–15% below distributor-based pricing.

• Sustainability: Zero ODP (ozone-depleting potential) cyclopentane-blown foam; 100% recyclable facing steel; EPD (Environmental Product Declaration) available per EN 15804.

• Technical Support: Free structural load-span calculations, thermal U-value simulations, and on-site joint sealing audit documentation.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT (approx. 1,300–1,800 m² depending on thickness)

• Loading Capacity per 20ft Container: 22 MT (max panel length 5.8 m)

• Loading Capacity per 40ft HC Container: 26 MT (max panel length 11.8 m)