Causes Of Bubbles Appearing On Transparent Labels

Many products require transparent labels, especially those filled with transparent or colored liquids. Transparent labels can make the visual effect of the product effect better. For example, many beverages I usually drink use this kind of label, but this kind of label has very high requirements for the labeling machine. During the labeling process, once there is any problem, the labeling will be defective. Today, I will tell you about the science of what causes the labeling bubbles to appear when using transparent labels.

What is the reason for the bubble phenomenon when the labeling machine sticks transparent labels? There are five main reasons.

The first reason is that there are impurities on the product we need to label, such as plasticizers, glues and the like. The presence of these things on the bottle will cause the transparent label to bubble. Therefore, we must clean the products we label before labeling. In this way, there will be no blistering phenomenon when the transparent label is applied by the labeling machine.

The second reason is a problem with labels. If the material of our transparent label is wrong, blistering will also occur. Soft bottles should choose synthetic materials such as PE, PVC, unstretched PP and PE and PP; rigid bottles should choose PET, BOPP, PS fabrics. Remember not to do the opposite.

The third reason for the appearance of bubbles when the labeling machine sticks transparent labels is that the speed of the labeling machine is not adjusted correctly. Under normal circumstances, when the labeling machine is labeling, the running speed of the bottle body should be slightly faster than the labeling speed of the label, so as to avoid the generation of air bubbles.

We also need to make sure that the bottle is free of static electricity before labeling. Brushes, sponge rollers, and vacuum adsorption methods should not be used on the labeling machine. A rubber scraper with a certain strength should be installed to contact the label and make the scraper The board maintains a certain angle and strength. The labeling of the soft bottle should adjust the relationship between the labeling speed, the strength of the scraper, the angle and the distance.

It is mentioned above that the wrong material of the transparent label will also cause bubbles when the labeling machine sticks the transparent label, and the wrong backing paper will also cause this phenomenon. When choosing the backing paper, we should choose the backing paper with good smoothness, such as the backing paper of PET material, so that the adhesive has good smoothness on the surface, and the wetting property is good and smooth after labeling.

The above is the answer to the question "What causes the bubbles when the labeling machine sticks transparent labels?" I hope you will like it.