PUR & PIR Sandwich Panels for Cold Storage and Clean Rooms

PUR & PIR Sandwich Panels for Cold Storage and Clean Rooms

When it comes to building efficient cold storage facilities or sterile clean rooms, the choice of insulation material and panel configuration is critical. PUR (Polyurethane) and PIR (Polyisocyanurate) sandwich panels have become the preferred solution due to their excellent thermal insulation, structural strength, and ease of installation.

1. Panel Composition

1. 1. Surface Materials (Facing):

• Galvanized Steel / Aluminum / Stainless Steel
• Thickness: 0.4–1.0 mm (~0.016–0.04 inch)
• Coating: Polyester, PVDF, or food-grade coatings for hygienic surfaces
• Advantages: Corrosion-resistant, easy to clean, durable

1. 2. Core Materials:

• PUR (Polyurethane Foam):

1. 1. Density: 40–45 kg/m³ (~2.5–2.8 lb/ft³)
   2. Thermal Conductivity (k-value): 0.022–0.024 W/(m·K) (~0.15–0.16 BTU·in/hr·ft²·°F)

• PIR (Polyisocyanurate Foam):

1. 1. Density: 45–50 kg/m³ (~2.8–3.1 lb/ft³)
   2. Thermal Conductivity (k-value): 0.021–0.023 W/(m·K) (~0.14–0.15 BTU·in/hr·ft²·°F)
   3. Advantages: Better fire resistance than standard PUR

Note on R-values:
R-value = Thickness / k-value
For example, a 100 mm (~4 inch) PIR panel with k = 0.022 W/(m·K) gives R ≈ 4.55 m²·K/W (~25.5 ft²·°F·hr/BTU).

2. Panel Dimensions

Standard Thickness: 50–200 mm (~2–8 inch)

Width: 1.0–1.2 m (~39–47 inch)

Length: Up to 12 m (~39.4 ft), customizable

Tip: For cold storage, thicker panels (6–8 inch) are recommended for low-temperature storage below -20°C (-4°F).

3. Key Features

4. Applications

• Cold Storage / Freezers: Optimized insulation reduces energy consumption, maintains consistent temperature.
• Clean Rooms / Laboratories: Smooth, hygienic surfaces prevent microbial growth and allow easy cleaning.
• Food Processing Facilities: Combines thermal insulation with hygiene compliance.

5. Why Choose Our Panels

1. Over a decade of experience in supplying PUR & PIR panels
2. Custom sizes, facing options, and colors available
3. Technical support and after-sales service to ensure optimal performance
4. Compliance with all kinds of industrial and fire safety standards.