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How do premium cooler boxes prevent sensitive medications from accidentally freezing?

2026-07-09

Accidental freezing is a major cause of vaccine and biological waste during transit. Many liquid vaccines lose potency permanently if they drop below $0^circtext{C}$ .

To combat this, manufacturers use two key methods:

Thermal Buffers: Implementing specialized interior partitions or cardboard layers that prevent direct contact between the medicine vials and the frozen gel packs.
Advanced PCMs (Phase Change Materials): Unlike standard water-based ice packs that freeze at 0 $0^circtext{C}$ , advanced PCMs are engineered to change phases at specific target temperatures (e.g., 5 $0^circtext{C}$ ). This keeps the internal environment locked into the safe 2 $0^circtext{C}$ range without any danger of sub-zero freezing.

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Henan Phefon Cold Chain Equipment Co., Ltd.

Phefon Cold Chain ,we are changing the tranditional way of keeping things cool in the world.

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