Label detachment and lifting are the most common issues with self-adhesive labels during winter. Once these problems occur, they often lead to label scrapping and reapplication, resulting in significant economic and labor costs. Many customers notice that the same label works fine in other seasons but frequently malfunctions in winter. What causes this, and how can it be addressed?

I. Low-Temperature “Frost Damage” Reducing Adhesive Fluidity

Self-adhesive labels consist of the face material, adhesive layer, and backing paper. Adhesive viscosity is closely linked to its fluidity: the higher the fluidity, the better the adhesive performance; lower temperatures reduce fluidity.

In cold northern regions, storing labels below their specified minimum temperature (commonly 10°C for adhesives) can cause the adhesive to “freeze,” leading to a significant drop in initial and holding adhesion. This often results in edge lifting or detachment after application.

Solution:

 • Ensure labels are stored within the temperature range specified by the material.

 • If labels have been frozen, move them to an environment above 10°C and let them rest for about 24 hours; adhesive performance usually returns to normal.

II. Rough Surface Prevents Proper Adhesive Wetting

Adhesive must fully penetrate the surface to achieve maximum bonding, usually taking about 24 hours. The label’s face material has inherent stiffness, exerting a slight rebound force on the adhesive layer.

In winter, reduced adhesive fluidity combined with a rough bonding surface can prevent proper wetting. Continuous rebound forces from the face material can then cause edge lifting or full detachment.

Solution:

 • Optimize the bonding surface to make it as flat and smooth as possible.

 • In cold conditions, use labels with thicker adhesive layers to improve bonding strength and cushioning.

III. Object Surface Too Cold

If the item being labeled (e.g., metal cans or plastic bottles stored long-term in unheated warehouses) is too cold, the adhesive temperature drops further during application, preventing effective activation and flow, resulting in insufficient initial adhesion.

Solution:

 • Ensure the item’s surface temperature is no lower than 10°C before labeling (refer to the label’s technical specifications).

 • Implement preheating or environmental temperature control in the labeling area.

IV. Exposure to Low Temperatures Immediately After Labeling

After application, adhesives need around 24 hours to fully cure and reach final adhesion. If products are transferred immediately to a cold environment, the adhesive may shrink before full bonding, causing delamination.

Solution:

 • After labeling, store products in a mild environment above 10°C for 24 hours until adhesion is fully developed before moving to long-term low-temperature storage.

V. Insufficient Labeling Pressure Prevents Proper Adhesion

In automated labeling, low pressure on the label roller can leave air gaps, reducing adhesion. In summer, adhesive fluidity can partially compensate, but in winter, poor adhesion is exacerbated.

Solution:

 • Increase stamping pressure on automatic labeling machines during winter.

 • Regularly inspect rollers and mechanisms to ensure even compaction.

Summary

Stable winter labeling depends on temperature control, surface treatment, and process compatibility. For applications involving prolonged or periodic low temperatures, consult us during material selection. Fengyuan Packaging provides customized solutions, including low-temperature adhesives and adaptable materials, with expert guidance to ensure reliable winter labeling.