Cold room door panels maintain consistent internal temperatures from -40°C to +10°C in walk-in refrigerators and freezers. The panels combine a rigid Polyurethane (PUR) or Polyisocyanurate (PIR) foam core with metal cladding layers of stainless steel or galvanized steel. Foam density ranges from 40 to 50 kg/m³, providing compressive strength and moisture resistance while meeting European Commission/United States Department of Agriculture (EC/USDA) hygiene requirements.
Construction features tongue-and-groove interlocking edges with internal cam-lock fasteners that create airtight joints. The cam-lock mechanism enables quick installation using only an Allen wrench, eliminating thermal bridging and minimizing air leakage. Common thicknesses include 100mm and 150mm, with standard widths of 960mm, 1000mm, or 1120mm.
Thermal conductivity values range between 0.020 and 0.024 W/mK, delivering R-values from R-5 to R-8.8 per inch. The closed-cell foam structure resists moisture ingress and inhibits fungal growth, maintaining hygiene standards with B1 or B2 fire resistance ratings.
Applications include food storage, pharmaceutical facilities, distribution warehouses, and healthcare environments requiring precise temperature control. Customization options encompass RAL color charts, surface finishes, specialized handles, viewing windows, and emergency escape devices for enhanced functionality.
Your Trusted Manufacturer for Energy-Efficient Cold Room Doors
As the industry leading insulated panel manufacturer for cold storage, RaxPanel provides multiple cold storage panel types for different applications. With over 20 years of experience, our in-house R&D and production capabilities in Hebei, China, ensure that every cold room door panel delivers optimal thermal efficiency, durability, and long-lasting performance.
Our cold room door panels feature:
- Robust construction with corrosion-resistant steel sheets and high-density polyurethane foam cores, achieving thermal conductivity as low as 0.024W/mK
- An interlocking tongue-and-groove system reinforced with cam-lock fasteners for an airtight seal that minimizes thermal bridging and reduces energy consumption
These panels meet international standards including CE and FM, and come with warranty coverage to assure long-term reliability.
Backed by a daily output of 1500+ square meters, we serve clients across 30+ countries with custom solutions tailored to specific project requirements. Whether for food storage, pharmaceutical applications, or industrial freezers, our doors maintain precise temperatures from -45°C to +10°C. Rely on our expertise in composite panel manufacturing for high-performance, energy-efficient cold room doors.
Get High-Quality Cold Room Doors From RaxPanel Today!
| Parameter | Value |
|---|---|
| Core Material | Rigid polyurethane (PUR) or polyisocyanurate (PIR) foam, CFC-free |
| Core Density | 40 – 50 kg/m³ |
| Cladding Material | Stainless steel or galvanized steel (meets EC/USDA hygiene standards); optional embossed aluminum or fiber-reinforced plastic (FRP) |
| Cladding Thickness | 0.4 – 1.0 mm |
| Panel Thickness | 50 mm, 75 mm, 100 mm, 120 mm, 150 mm, 200 mm |
| Panel Width | 960 mm, 1000 mm, 1120 mm (customizable) |
| Panel Length | Customizable from 0.5 m to 18 m |
| Thermal Conductivity (λ-value) | 0.020 – 0.024 W/mK (PIR: 0.020-0.022 W/mK, PUR: 0.022-0.024 W/mK) |
| Operating Temperature Range | -40°C to +10°C |
| Fire Resistance Rating | B1 (PIR) or B2 (PUR) |
| Joint System | Tongue-and-groove with internal cam-lock fasteners |
| Compressive Strength | ≥ 160 kPa |
| Surface Finish Options | Polyester, PVDF, Plastisol, PVC coatings; RAL color chart available |
| Certifications | CE, FM, FDA, EUSCF, EN14509 A.10 |
| Installation Orientation | Vertical or horizontal |
| Hygiene Properties | Food-safe, resistant to oils and chemicals, inhibits fungal growth |
Cold Room Panel Refrigeration & Thermal Insulation Engineering Guide
Cold room insulated sandwich panels are critical thermal envelope components engineered for commercial walk-in coolers, industrial cold storage logistics, pharmaceutical freezers, and blast freezing tunnels. Formulated with high-density closed-cell PIR/PUR foam ($\lambda pprox 0.019 – 0.022$ W/m·K) and integrated Cam-Lock or tongue-and-groove joint systems, these panels maintain stable sub-zero temperatures down to -40°C while minimizing compressor energy consumption.
💡 Pro Tip: Integrated Cam-Lock Hooks & Dual Butyl Thermal Seals
At RaxPanel, our modular cold room panels feature factory-embedded eccentric metal Cam-Locks. Turning a hex wrench draws panel edges together under high mechanical tension, compressing dual internal elastomeric gaskets to form a vapor-tight seal that eliminates frost formation and cold bridge thermal leakage.
At RaxPanel, our modular cold room panels feature factory-embedded eccentric metal Cam-Locks. Turning a hex wrench draws panel edges together under high mechanical tension, compressing dual internal elastomeric gaskets to form a vapor-tight seal that eliminates frost formation and cold bridge thermal leakage.
1. How to Select Panel Thickness Based on Operating Temperature Ranges?
Selecting incorrect panel thickness leads to continuous compressor overload and ice formation on joint seams. RaxPanel thermal thickness guidelines include:
2. Cam-Lock Modular vs Continuous Tongue-and-Groove Logistics Systems
Modular walk-in coolers utilize internal Cam-Locks for rapid hex-wrench assembly without wet sealants. Large-scale refrigerated distribution warehouses utilize continuous tongue-and-groove PIR panels for long structural spans up to 12 meters.
3. Cold Room Sliding Doors and Floor Anti-Heave Systems
🚪 Sub-Zero Door & Floor Protection:
- Heated Door Frame Gaskets: Heavy-duty sliding/hinged cold room doors integrate perimeter heating wires to prevent rubber gasket freezing.
- Under-Floor Frost Heave Prevention: Freezers built directly on soil integrate ventilation ducts or electric heating mats below the insulation slab to prevent ground frost expansion.
4. Where Are Cold Room Panels Most Commonly Installed?
🥦 Cold Chain Logistics & Distribution Hubs
High-bay automated cold storage warehouses storing fresh produce, meat, and frozen foods.
💉 Pharmaceutical & Vaccine Storage Facilities
Temperature-controlled GSP/GMP certified cold rooms maintaining 2°C to 8°C stability.
5. USDA & HACCP Hygiene Compliance for Surface Facings
Steel facings feature food-safe white antibacterial polyester coating or Grade 304 stainless steel. Non-porous surfaces withstand daily high-pressure washdowns without chemical degradation.
Frequently Asked Questions (FAQS)
1. What cold room panel thickness is needed for a -20°C freezer room?
A 120mm to 150mm PIR panel is recommended for -20°C freezer rooms to achieve optimal thermal U-values (U ≈ 0.15 W/m²K) and prevent compressor overload.
2. How does the Cam-Lock system simplify walk-in cooler assembly?
Embedded eccentric Cam-Locks pull adjacent panels tight using an Allen key, forming a vapor-tight seal without needing external screws or on-site welding.
3. What is the thermal conductivity (λ) of RaxPanel cold room foam cores?
Our closed-cell PIR/PUR foam achieves a thermal conductivity coefficient of 0.019 to 0.022 W/m·K for maximum thermal insulation.
4. Why do cold room door frames require heating cables?
Door perimeter heating cables prevent ambient moisture condensation from freezing door gaskets shut against sub-zero freezer frames.
5. Are RaxPanel cold room panels food-grade USDA compliant?
Yes. Pre-painted steel skins use food-safe anti-bacterial polyester coatings that meet USDA, FDA, and HACCP sanitation standards.
6. How is floor frost heave prevented under freezer slabs?
Under-floor XPS/PIR insulation is installed above sub-slab ventilation pipes or electrical heating cables to prevent soil moisture freezing and expanding.
7. Can modular cold room panels be dismantled and relocated?
Yes. Cam-Lock joined panels can be unlocked with a hex wrench, dismantled without damage, and reassembled or expanded at a new location.