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.
(1) 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.
(2) Improper adjustment of the roller on the automatic labeling machine may cause the roller to break the backing paper on the edge of the label and cause the label 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 ooze out. 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.
(3) 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.
(4) If the release layer of the backing paper (usually the silicone oil layer) is damaged, the label will also be broken. In the label breakage tape caused by this condition, the broken side of the backing paper is jagged.