PU Sandwich Panel — China Premium Insulation Supplier

PU Sandwich Panel — PUR/PIR Polyurethane Foam Core Insulation Panels

Professional PU sandwich panels with rigid polyurethane (PUR) or polyisocyanurate (PIR) foam core laminated between metal face sheets. Exceptional thermal efficiency (λ ≤ 0.022 W/m·K), fire resistance, and structural performance. Leading PU sandwich panel supplier China.

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What Are PU Sandwich Panels? — PUR/PIR Foam Core Insulation by China Supplier

Rigid Foam Core • Steel Face • Premium Insulation

PU sandwich panels (Polyurethane) and PIR (Polyisocyanurate) consist of a rigid foam core bonded between two high-strength color coated steel sheets. Manufactured through a continuous double-belt lamination process under precisely controlled temperature and pressure, the foam forms a seamless, closed-cell insulation layer with excellent adhesion to the metal facings.

PIR is an advanced version of PUR with improved fire performance and higher thermal stability. Both are widely used in cold storage, food processing facilities, pharmaceutical warehouses, clean rooms, and high-performance building envelopes where superior insulation and fire safety are critical.

Standards: GB/T 23932 / EN 14509 / AS/NZS 2728 / ASTM E72.

Superior Thermal Insulation

Lowest thermal conductivity among insulation materials (λ ≤ 0.022 W/m·K for PIR). Ideal for cold storage and energy-efficient buildings.

Excellent Fire Performance

PIR offers Class B-s1,d0 (Euroclass). High fire resistance, low smoke emission, self-extinguishing properties.

High Structural Rigidity

Rigid foam core provides excellent dimensional stability and load-bearing capacity. Suitable for long-span wall and roof systems.

Moisture & Vapor Barrier

Closed-cell foam structure prevents moisture absorption. No vapor barrier required in most applications.

Fast & Clean Installation

Factory-finished panels with interlocking joints. Quick assembly, no wet trades, reduced construction time.

Acoustic Insulation

Effective sound reduction (up to 30dB). Suitable for noise-sensitive environments and building partitions.

PUR vs PIR — Comparison — PU Foam Core Insulation Options from China Supplier

Choose the Right Core for Your Application

Property	PUR (Polyurethane)	PIR (Polyisocyanurate)
Thermal Conductivity	λ ≤ 0.024 W/m·K	λ ≤ 0.022 W/m·K
Service Temperature	-50°C to +100°C	-50°C to +120°C
Fire Rating (Euroclass)	Class C-s3,d0	Class B-s1,d0 (better)
Flame Retardancy	Standard	Excellent (self-extinguishing)
Smoke Emission	Moderate	Low
Cost	Economical	Premium (20-30% higher)
Best Application	Cold storage, industrial buildings	Fire-sensitive areas, clean rooms, pharma

Panel Structure — PU Sandwich Panel Foam Core Composition by China Supplier

PUR/PIR Foam Core Laminated Between Steel Face Sheets

PU Sandwich Panel Supplier China — Roof Panel Structure

Roof Shape

PU Sandwich Panel Supplier China — Wall Panel Cross Section

Wall Shape

Total steel sheet (0.40–0.80 mm PPGI/PPGL) + PUR/PIR Foam Core (38–45 kg/m³ density) + Total steel sheet (0.40–0.80 mm PPGI/PPGL)

Technical Specifications — PU Sandwich Panel Parameters — PUR/PIR Insulation

PUR / PIR Sandwich Panel Parameters

Parameter	Value / Option
Face Material	Color Coated Steel (PPGI / PPGL), Thickness: 0.40 – 0.80 mm
Core Material	PUR (Polyurethane) or PIR (Polyisocyanurate) Rigid Foam
Core Density	38 – 45 kg/m³
Panel Thickness	40 / 50 / 60 / 75 / 80 / 100 / 120 / 150 / 200 mm
Effective Width	950 / 1000 / 1150 mm
Panel Length	Custom cut, up to 16,000 mm
Thermal Conductivity (PUR)	λ ≤ 0.024 W/m·K
Thermal Conductivity (PIR)	λ ≤ 0.022 W/m·K
Fire Rating (PIR)	Euroclass B-s1,d0 / ASTM E84 Class A
Fire Rating (PUR)	Euroclass C-s3,d0 / ASTM E84 Class B
Panel Weight	Approx. 12 – 18 kg/m² (depending on thickness)
Surface Profile	Flat / Micro-ribbed / Corrugated
Joint Type	Shiplap / Tongue & Groove / Overlap
Service Temperature	-50°C to +120°C
Color	RAL Colors / Customized

Note: Custom thicknesses, widths, and core densities available upon request.
Mill test certificates (MTC) provided. Third-party inspection (SGS / BV) welcome.