Addressing Winter Labeling Issues: Preventing Edge Warping, Air Bubbles, and Wrinkling in Self-Adhesive Labels
In winter, self-adhesive label stickers, particularly on plastic bottles, can encounter several issues. These issues become more pronounced as the temperature drops, leading to problems like edge warping, bubbling, and wrinkling. This is especially noticeable with large-format labels applied to curved surfaces. So, how can we address the issue of edge warping and air bubbles in self-adhesive labels during winter?
There are several contributing factors to these issues, outlined below:
Material Type (Paper Labels)
Paper labels do not have the ability to contract or expand with temperature changes. This lack of flexibility can cause problems, especially in cold conditions.
Low Adhesive Viscosity
If the adhesive used on the label has low viscosity, it may not bond effectively with the surface of the object, leading to poor adhesion and potential edge warping or bubbling.
Improper Label Application
Gaps between the label and the surface to which it is applied can result in air bubbles or poor adhesion, causing similar issues.
Surface Characteristics of the Object
Irregular or curved surfaces, or surfaces that are dirty (e.g., oily or covered in particles), can prevent proper adhesion, leading to these labeling problems.
Improper Label Storage Conditions
Even if the labels are of good quality, improper storage conditions can cause issues like edge warping, bubbling, or wrinkling. Labels should be stored according to the manufacturer's recommendations to prevent these problems.
Solutions:
Choose Suitable Materials for Cold Weather
Use materials specifically designed for low-temperature environments. For instance, low-temperature-resistant labels or PE material self-adhesive labels are ideal choices for winter labeling conditions.
Proper Labeling and Storage Temperature
It is recommended to label and store labels at a temperature of at least 15°C in winter. After labeling, allow the product to remain in an environment above 15°C for at least 24 hours before moving it to a different temperature environment to ensure proper adhesion.
Labeling Environment
For optimal results, the ideal labeling conditions involve a small area for the label, a flat surface on the object being labeled, and a clean surface. Ensuring these conditions are met will help prevent warping and bubbling.