Reasons for the labeling machine to break the label

After the self-adhesive label of the labeling machine is die-cut into a finished product, it generally leaves a backing paper that is wider than the label. This is done to facilitate the removal of the label when the customer applies the label. During label packaging, transportation and handling, the backing paper on the edge of the label is prone to cracks, causing small cracks. There is a certain tension when the automatic labeling machine is labeling, and the label with cracks on the edge of the backing paper is easily broken under the action of tension, causing the label to break. In addition, the improper adjustment of the rollers on the automatic labeling machine may cause the rollers to break the backing paper on the edge of the label and cause the labeling to break. The label is generally torn by rolling the backing paper with a roller, and the backing paper has regular cracks.

    If the finished label is rewound too tightly, the adhesive in the sticker will be squeezed out, causing the glue to bleed. The oozing glue sticks to the back of the liner, making it difficult for the entire roll of labels to loosen. This is especially true in summer. If the label is narrow, the tensile strength per unit area of the liner will not be too great. The automatic labeling machine has a certain tension during the labeling process. When a roll of leaking adhesive labels is used for automatic labeling, it is likely that under the action of the tension of the labeling machine and the internal tension of the roll, the backing paper from which the label is torn off will break. Causes the label to break. In the label breakage caused by this situation, the backing paper is irregularly broken under the action of tensile force, but the broken surface is relatively uniform.

    The quality of die cutting also has a great influence on whether it is easy to break the line during automatic labeling. If the die cutting pressure is too high, the liner will be cut through, resulting in a reduction in the tensile strength of the liner and resulting in label breakage. The label is broken due to poor die-cutting. The section of the bottom paper is relatively uniform, and the crack is at the position of the die-cutting line.

    If the release layer of the liner (usually the silicone oil layer) is damaged, it can also cause the label to break. In the label breakage tape caused by this condition, the broken side of the backing paper is jagged. Damage to the release layer is caused by defects in the production of raw materials and coatings. At the same time, during the inspection and replenishment process of the printing factory, the release layer may be scratched due to improper technology.