Label printing companies often change the die-cutting characteristics of hot-melt adhesive labels by adjusting the die-cutting machine. The author summarizes the methods commonly used by workshop workers to provide you with reference.
1. Adjust the waste angle of the paper edge
The smaller the waste angle at the edge of the paper, the more likely it is to fall out of the mark. Increasing the waste angle can reduce the friction of the paper edge with the label, thus improving the phenomenon of the mark.
2. Shorten the discharge distance
After the label is die-cut, it can be loosened by several rollers, and the labeling phenomenon occurs. Shortening the waste disposal distance can greatly improve the label drop phenomenon.
3. Material pre-stripping
After pre-stripping, the hot-melt adhesive label can reduce the release force and improve the waste and break. In addition, in the case where the die-cutting pressure is insufficient, the die-cutting pressure can be increased by increasing the diameter of the die-cutting bottom roll, and the adhesive layer can be cut to make the production proceed normally.
4. Install the heating device on the die cutting machine
The low temperature causes the viscosity of the adhesive to be low, which is easy to cause a drop. After die-cutting and heating, the temperature increase on the surface of the label can increase the viscosity of the adhesive and increase the release force, which can effectively improve the mark-off phenomenon.
5. Install the buffer roller on the die cutting machine
The buffer roller can buffer the tension change of the waste roller and improve the stress state of the paper edge. It is recommended that label printing companies retrofit die-cutting machines and add buffer roller devices to improve label edge-breaking.
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