1. Uneven sizing of superglue. Generally, transparent self-adhesive labels are composed of three parts: printing layer, adhesive and backing paper. According to the manufacturing process, they are composed of self-adhesive label paper coating, surface material, adhesive and release coating (silicon coating). ), base paper, back coating or back printing six parts. If during the production process of self-adhesive label paper, there is a process defect of uneven application of super glue during the application of super glue, it will lead to bubbling. To deal with the bubbling caused by this reason, you need to choose cost-effective transparent self-adhesive label materials when purchasing.

2. Insufficient working pressure of the labeling machine

Generally, the main components of a fully automatic labeling machine include an unwinding wheel, a buffer wheel, a guide roller, a push roller, an unwinding wheel, a breakaway plate and a pressing wheel. The whole process of automatic labeling is that after the sensor on the labeling machine sends out the labeling signal, the driving wheel of the labeling machine starts.

Since the wire rope drum mark is in a tensioned state during installation, when the bottom paper is close to the release plate, the transparent self-adhesive label paper is forced to break away from the bottom paper due to its certain verticality. At this time, the labeling object is just under the self-adhesive label paper, and under the influence of the pressure wheel, the logo separated from the bottom paper is evenly and evenly applied to the object.

After labeling, the sensor under the wire rope drum mark sends out a signal to resist operation, the driving wheel stops, and a labeling process is completed. If the pressure wheel of the labeling machine has defects in the pressure setting or overall design, it will cause bubbles on the self-adhesive label paper during labeling. If you encounter this problem, you need to contact the labeling machine manufacturer to adjust the equipment.