In low-temperature environments, the adhesion of self-adhesive labels weakens as temperature decreases, a phenomenon determined by their physical properties. Common issues such as non-adhesion, detachment, or falling labels are often caused by improper temperature control. Below are key considerations for using self-adhesive labels in winter, based on our production experience:

1. Storage Environment Temperature

Labels should be stored indoors or in a temperature-stable environment. Prolonged exposure to outdoor or low-temperature conditions may cause the adhesive to suffer from "freezing damage," and without thermal recovery, its adhesion will be significantly reduced or even completely lost.

II. Processing Environment Temperature

Low temperatures reduce material viscosity and flexibility, which may lead to processing issues such as uneven printing, die-cutting defects, and strip separation. It is recommended to perform processing in a temperature-controlled workshop, and pre-warming the material may be necessary when required.

III. Ambient Temperature for Labeling

Please note the distinction between two concepts:

-Labeling temperature: The minimum ambient temperature required for proper labeling operation.

-Operating temperature: The temperature range the label can withstand for extended periods after application (typically 24 hours post-curing).

If the ambient temperature is below the material's specified labeling temperature, the adhesive may not fully activate, potentially causing issues like poor adhesion or edge warping.

IV. Label Storage and Reheating

In cold regions or after winter transportation, the label itself may be at a lower temperature. Even if the labeling environment meets the standards, if the label does not return to temperature, its adhesion will not function properly. Therefore, it is recommended to place the label in the labeling environment for a period of time before processing or labeling to allow it to warm up to near ambient temperature.

V. Post-labeling Precautions

After labeling, the adhesive typically requires approximately 24 hours to fully cure and achieve optimal adhesion. During this period, avoid abruptly moving labeled items into environments with drastic temperature changes, as this may compromise the bonding effect. Film labels and containers are prone to deformation due to thermal expansion and contraction, while paper labels may expand or contract with humidity variations, all of which can disrupt the adhesive's stable performance.

VI. Labeling Operation Details

During labeling, ensure the surface to be labeled is clean, dry, and free of oil stains. Simultaneously, apply uniform and appropriate labeling pressure to activate the pressure-sensitive properties of the adhesive and eliminate air between the label and the surface, ensuring a firmer and smoother adhesion.

Pro tip: For applications requiring prolonged low-temperature exposure (e.g., frozen food labeling or winter storage in northern regions), we recommend consulting us during material selection. Our experts will recommend low-temperature resistant adhesives and compatible materials to ensure reliable labeling performance from the source.

If you encounter any issues during use, please feel free to contact Fengyuan Packaging Technology Team. We provide end-to-end support from material selection to application.