At our printing house, we place the highest emphasis on quality and consistency. Please note that there have been no changes to our production technology or adhesive formulation. Every batch of material undergoes 100% quality control in accordance with FINAT testing standards (FTM9 and occasionally FTM8) before printing.

While we are confident that the adhesive itself remains in excellent condition, we will nevertheless carry out additional testing to rule out any irregularities. In the meantime, here are the most common external factors that may cause labels not to adhere properly:

1. Application on Wet or Condensed Surfaces

This is by far the most frequent cause of adhesion failure. No adhesive can bond to a wet surface. If bottles are cold and the surrounding environment is warm, condensation can form, creating a thin layer of moisture that prevents proper adhesion.

Our labels use  high-performance hot melt adhesive, known for its exceptional water resistance after application. However, to ensure full adhesion, the surface must be completely dry at the time of labeling.

2. Silicone Contamination

During the bottle manufacturing process, a silicone-based lubricant is often applied to make bottles slide smoothly along production lines. When the silicone layer is uneven—either excessive or insufficient—it can significantly reduce the surface energy of the glass, preventing the adhesive from bonding effectively. Even microscopic traces of silicone can interfere with label adhesion.

3. Insufficient Labeling Machine Pressure

The label material in this case consists of thick, textured wine paper laminated with metallized polypropylene, which gives it a premium appearance but also makes it relatively stiff. If the labeling rollers or pressure settings are not properly adjusted, the label may not be pressed firmly enough onto the bottle, leading to edge lifting or partial detachment over time.

4. Bottle Surface Irregularities

From the provided photographs, we noticed a small bump or uneven spot on the bottle surface. Even minor irregularities can cause localized air pockets, reducing contact between the label and the glass, which can in turn lead to peeling.

5. Temperature and Storage Conditions

Extreme temperatures—either during storage or immediately before labeling—can affect both the adhesive’s tack and the label material’s flexibility. Ideally, bottles and labels should be applied at room temperature (around 20–25°C) and stored in a dry, climate-controlled environment to ensure optimal adhesion.

6. Handling After Application

Labels need a short curing time to fully bond with the surface. If bottles are handled, packed, or exposed to friction too soon after labeling, this can weaken the initial bond and cause labels to shift or peel later.

In summary, while our materials and adhesives meet the highest quality standards, external factors—especially moisture, silicone contamination, or mechanical application settings—can significantly influence final adhesion results. By addressing these conditions, consistent labeling performance can be ensured.