In low-temperature environments, the adhesive performance of self-adhesive labels decreases as temperatures drop. This behavior is inherent to the physical properties of pressure-sensitive adhesives. Common issues reported by customers—such as poor adhesion, label fly-off during application, or labels detaching after use—are largely related to improper temperature control. Based on our production experience, the following are key considerations for using self-adhesive labels during winter conditions:

I. Storage Temperature

Labels should be stored indoors or in a temperature-stable environment. Prolonged storage outdoors or in low-temperature conditions may cause the adhesive to suffer “cold damage.” If the material is applied without sufficient temperature recovery, adhesive performance may be significantly reduced or even rendered ineffective.

II. Processing Environment Temperature

Low temperatures reduce both the adhesive performance and flexibility of label materials, which can lead to processing issues such as uneven printing, die-cut label fly-off, or label loss during slitting. Processing should therefore be carried out in a suitably heated workshop. When necessary, materials should be preconditioned to restore temperature before production.

III. Labeling Environment Temperature

It is important to distinguish between the following two concepts:

 • Labeling temperature: The minimum ambient temperature at which normal labeling operations can be performed.

 • Service temperature: The temperature range the label can withstand long-term after application (typically after a 24-hour curing period).

If the ambient temperature is below the specified labeling temperature of the material, the adhesive may not fully activate, resulting in insufficient adhesion, edge lifting, or related issues.

IV. Label Storage and Temperature Conditioning

In cold regions or after winter transportation, labels themselves may be at a low temperature. Even if the labeling environment meets the required conditions, insufficient temperature recovery of the labels can prevent proper adhesive activation. Therefore, prior to processing or labeling, it is recommended to allow the labels to sit in the labeling environment for a period of time so they can acclimate to near ambient temperature.

V. Post-Labeling Considerations

After application, adhesives typically require approximately 24 hours to fully cure and achieve optimal bonding strength. During this period, labeled products should not be abruptly transferred to environments with large temperature fluctuations, as this may negatively affect adhesion. Film labels and containers are particularly susceptible to deformation due to thermal expansion and contraction, while paper labels may expand or shrink in response to humidity changes—both of which can interfere with adhesive stability.

VI. Labeling Operation Details

During application, ensure that the surface to be labeled is clean, dry, and free of oil or contaminants. Even and appropriate pressure should be applied during labeling to activate the pressure-sensitive adhesive and expel trapped air between the label and the substrate, ensuring firm and smooth adhesion.

Reminder: If your application involves long-term low-temperature conditions (such as frozen food labeling or winter warehousing in northern regions), we recommend discussing material selection with us in advance. We can recommend low-temperature-resistant adhesives and compatible materials to ensure reliable labeling performance from the outset.

If you encounter any specific issues during use, please feel free to contact the Fengyuan Packaging technical team. We provide full-process support, from material selection through application.