Cold Chain Coolers: Why Do Insulation Materials Perform So Differently?

Many buyers choose coolers based on price alone, without checking the insulation— and many regret it later. They may all be called “insulation materials,” but why do some struggle to hold temperature for half a day, while others maintain it for 72 hours?

The answer lies in the insulation panel’s thermal conductivity.

What Makes Cold Chain Cooler Insulation Different?

A cooler slows heat gain or loss. Its performance depends mainly on the thermal conductivity of its insulation panels: the lower the value, the better the insulation.

Compare the thermal conductivity of common insulation materials below. Lower values mean better insulation.

VIP has only 1/20 the thermal conductivity of standard EPS foam. What does that mean? A 1 cm VIP layer can provide the same insulation as 20 cm of standard foam.

Super Tech Cold Chain · SuperCooler coolers use VIPs with a thermal conductivity of just 0.002 W/(m·K). They provide over 16 times the insulation performance of standard EPS foam and outperform conventional insulation materials. Compared with conventional materials such as PU, VIPs can improve insulation performance by more than 10 times while requiring only 1/5–1/10 of the thickness.

Approximate cold-retention times for coolers made with different materials are shown below:

Using the high-performance VIPs developed and manufactured in-house by its parent company, Super Tech, SuperCooler vacuum-insulated coolers can maintain 2-8°C for over 120 hours with PCM under summer conditions (constant 35°C) or winter conditions (constant -20°C). Even the standard configuration provides at least 48 hours of temperature retention. Different temperature ranges and hold times can be customized.

A cooler’s insulation performance directly determines:

• How many ice packs are needed—the better the insulation, the fewer ice packs required.

• Whether the required hold time can be met—even small performance gaps matter.

• Whether the cargo stays safe—temperature fluctuations can compromise product quality.

Choosing the wrong insulation may save a little upfront, but cost you reputation and customer trust.

Super Tech Cold Chain is a key supplier of cold chain packaging and coolers to China’s biopharmaceutical industry. In line with GSP requirements, we integrate Super Tech’s vacuum insulation technology, wireless GPRS temperature-control services, and PCM thermal energy storage into complete cold chain packaging solutions.

Built around parent company Super Tech’s VIP technology, Super Tech Cold Chain · SuperCooler coolers protect your products throughout the cold chain.