Tiefkühletiketten

What are freezer labels?

Freezer labels are identification media developed for permanent use in refrigerated and deep-freeze environments. Unlike standard labels, both the face material and the adhesive are engineered for extreme cold — typically for temperature ranges down to -40 °C or below. Crucially, these labels not only function at storage temperatures but can also be safely applied to already cold or moist surfaces, such as directly after condensation layers have thawed.

The face material is commonly made from polyester film, polypropylene, or specially coated paper. These materials remain dimensionally stable even under heavy moisture, do not curl, and do not lose their print through softening. The adhesive used is designed for low-temperature adhesion: it remains flexible even under frost and bonds to surfaces such as frozen plastic, cardboard, or metal.

Practical applications

In intralogistics, freezer labels are encountered primarily in the following scenarios:

• Labeling of frozen products at goods receipt at ambient temperature, before the goods enter cold storage
• Direct labeling in the deep-freeze area during ongoing warehouse operations
• Batch and best-before date marking on frozen packaging
• Barcode and Data Matrix labels for scan-assisted picking in freezer aisles

A common mistake in practice is the use of standard adhesive labels, which lose adhesion under condensation or frost and cause read errors during scanning. This jeopardizes traceability and can lead to compliance issues in regulated industries — such as food or pharmaceuticals.

Key selection criteria

When selecting freezer labels, several factors should be considered together. First, the temperature range: cold storage (+2 to +8 °C), deep-freeze (-18 °C), and blast freezing (-30 to -40 °C) each present different requirements. Second, the application conditions: is the label applied at room temperature before entering the cold environment, or is it applied directly in the chilled area? The latter requires a more aggressive adhesive. Third, the printing method: thermal transfer printing is widely used for freezer environments, as it produces waterproof and abrasion-resistant prints. Direct thermal printing is less suitable, as the coating is adversely affected by cold and moisture. Fourth, scannability: barcode quality and contrast must meet the requirements of the scanning devices in use, even after condensation and mechanical stress. Fifth, regulatory requirements: in food and pharmaceutical cold chain applications, specifications regarding materials, printing, and traceability may apply that restrict the selection. Whether a specific label is suitable for a particular application can often only be definitively determined through testing in the real environment — manufacturer specifications on minimum temperature are a starting point, not a guarantee.