Industry solutions, including those developed by Sonoco ThermoSafe, demonstrate that effective temperature control depends on a system-level design rather than a single component.
A typical 48-hour cold chain packaging system includes:
1. Insulation Layer
The primary barrier against external temperature. Materials range from foam to fiber-based insulation.
2. Cooling Elements
Gel ice packs or other refrigerants must be carefully positioned to ensure even temperature distribution.
3. Internal Structure
Custom inserts help stabilize the product and prevent direct contact with cooling elements, reducing the risk of freezing damage.
4. Outer Packaging
Corrugated boxes provide structural strength and additional thermal buffering.
5. Sealing & Air Control
Minimizing air exchange is critical to maintaining internal temperature.
One of the key challenges in system design is balancing:
- Thermal duration
- Package weight
- Material cost
Our development approach focuses on integrated packaging systems using natural fiber insulation, combined with optimized ice pack layouts and structural design, to achieve reliable 24–48 hour performance across different applications.