Pur & Pir Panels
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Description

Sinopan Cold Room & Freezer Sandwich Panel: Premium Insulated Enclosure System

The Sinopan Cold Room & Freezer Sandwich Panel is a high-performance, engineered building solution specifically designed for the demanding requirements of temperature-controlled environments. Engineered for use as walls, ceilings, partitions, and doors in cold storage and processing facilities, it delivers exceptional thermal insulation, superior airtightness, and reliable structural integrity to ensure optimal energy efficiency and consistent temperature maintenance.


At the core of our cold room panels are advanced Polyurethane (PUR) and Polyisocyanurate (PIR) foams, renowned for their ultra-low thermal conductivity. These premium insulation materials provide the highest R-values per panel thickness, minimizing thermal bridging and energy loss. This makes them the industry-preferred choice for constructing energy-efficient freezer rooms, cold storage warehouses, food processing areas, climate-controlled logistics spaces, and pharmaceutical storage facilities.

Complete Technical Specifications

Parameter Category Specification
Panel Profile Flat / Water Ripple / Square wave
Fixation System Exposed Fastener
Standard Core Materials Polyurethane (PUR), Polyisocyanurate (PIR)
Thickness 50mm60mm75mm100mm120mm150mm180mm200mm250mm
Metal Facings Prepainted Galvanized Steel (other metals available upon request)
Steel Thickness 0.4mm - 0.8mm
Galvanization AZ20, AZ50, AZ100, AZ150, AZ180 (g/)
Coatings
PE, SMP, HDP, PVDF
Fire Reaction (EN13501)

PIR: B-s1,d0,PUR: B-s2,d0

Typical Applications
Freezer rooms, cold storage warehouses, food processing areas, climate-controlled logistics spaces, and pharmaceutical storage facilities.
Sinopan 760 ProfileSinopan 760 Profile

Note: Other thicknesses and custom configurations are available for large-volume projects. Please inquire for special requirements.

Key Features & Benefits

1. Maximum Thermal Efficiency: PUR/PIR cores offer the lowest K-values, ensuring superior insulation performance that directly reduces operational energy costs and maintains precise temperature control.

2. Excellent Airtight Seal:  Engineered with robust interlocking joints (such as C, H, or overlapping configurations) and integrated sealants to prevent moisture ingress and air leakage, crucial for humidity control and system efficiency.

3. Hygienic & Durable Surfaces:  Features smooth, non-porous, and easy-to-clean metal facings (often coated with FDA-compliant or anti-bacterial finishes), ideal for meeting strict food safety and sanitary standards.

4. Lightweight yet Structurally Strong: The composite sandwich structure provides high rigidity and load-bearing capacity while remaining easy to handle and install, speeding up project timelines.

5. Low Temperature Stability: Specifically formulated core materials maintain insulation performance and dimensional stability in extreme sub-zero environments.

6. Customizable Configurations:  Available in various thicknesses, surface finishes, and joint profiles to meet specific project requirements for temperature range, hygiene, and structural needs.

Ideal for:

1. Walk-in freezers & chillers

2. Large cold storage warehouses

3. Food & beverage processing rooms

4. Pharmaceutical cold chains

5. Floral storage

6. Any climate-controlled enclosure

Table 1: Metal Facing & Finish Options

Category Specific Options Key Notes
Material & Thickness Prepainted Steel Thickness range: 0.4mm - 0.8mm
Stainless Steel Recommended thickness ≤ 0.5mm for optimal formability
Aluminum Maximum available thickness: 1.0mm
Surface Patterns Flat, Water Ripple, Square Wave Applicable only to steel; corresponding steel thickness: 0.4mm - 0.8mm; provides different visual effects
Corrosion Protection (Steel) Galvanization Available specifications: Standard AZ50 (50g/), high-performance AZ100, AZ150, AZ180
Coatings Optional types: PE (Polyester), SMP (Silicone Modified Polyester), HDP (High Durability Polyester), premium PVDF (Fluorocarbon); PVDF offers the best color retention and weather resistance

Table 2: Selection Guide: PUR vs. PIR Core for Sandwich Panels

The choice between Polyurethane (PUR) and Polyisocyanurate (PIR) cores depends on your project's specific priorities for thermal performance, fire safety, and budget. Below is a clear comparison to guide your decision.

Feature Polyurethane (PUR) Core Polyisocyanurate (PIR) Core Key Takeaway
Thermal Conductivity (λ) ~0.022 - 0.024 W/m·K ~0.020 - 0.022 W/m·K PIR offers marginally better thermal resistance (lower λ value) per unit thickness.
Fire Reaction Performance (EN 13501-1) Class B, s2, d0
• B: Combustible
• s2: Limited smoke production
• d0: No flaming droplets
Class B, s1, d0
• B: Combustible
• s1: Lower smoke production than s2
• d0: No flaming droplets
PIR provides a superior fire reaction class due to better smoke performance (s1 vs. s2).
Key Strength Excellent cost-effectiveness and proven performance. Outstanding performance in continuous low-temperature environments. Superior fire safety characteristics and excellent long-term thermal stability. PUR is a robust, economical all-rounder. PIR is the premium choice for enhanced fire safety.
Ideal Application Profile • Cost-sensitive projects
• Standard cold storage & controlled environments
• Applications where the highest fire class is not mandated
• Projects with stricter fire safety requirements
• Premium cold storage & logistics facilities
• Applications where long-term thermal stability is critical
Choose PUR for budget efficiency. Choose PIR for projects prioritizing fire safety and top-tier insulation.

Recommendation Summary:

1. Choose PUR for its excellent balance of performance and value. It is the ideal solution for standard refrigeration, cold storage, and buildings where the specific "s1" smoke class is not required by code.

2. Choose PIR for its enhanced fire reaction performance (s1) and better thermal efficiency. It is the recommended choice for projects where minimizing smoke development is a concern and for premium, high-performance insulation envelopes.

Looking for Expert Support?

Our sales representative are here to assist you in selecting the optimal core material and thickness, tailored to your local climate, applicable building codes, and specific performance requirements. Reach out for a personalized professional consultation.

Ready to Get a Quote or Technical Assistance?

Selecting the ideal insulated panel setup is crucial for your project’s success. Connect with our team today to access detailed technical datasheets, load span charts, and a competitive, custom quote aligned with your exact specifications. We’re committed to supporting you every step of the way—from initial selection through to final installation.

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