A reliable solution for winter die-cutting
[Section Indian Network () News] hot melt adhesive material is particularly prone to winter, when the subject of die-fly phenomenon, the so-called die-cutting Darts is, when die-cut labels will be caught up together with set off with the waste discharge side. If there is a slight flying mark phenomenon, it will cause a certain amount of material waste for the label printing enterprise; if the flying standard is serious, it will not be able to produce normally. There may be many reliable solutions, but how to solve them is simple and effective? Let us first look at the reasons for the hot-melt adhesive material die-cutting markers in winter.
Reduced release force due to temperature
One characteristic of hot melt adhesive materials is that they are greatly affected by temperature. Under normal circumstances, when the temperature of the workshop is lower than 15 °C, the release force of the hot melt adhesive material will rapidly decrease. Therefore, in the winter in northern China, hot melt adhesive materials are particularly prone to the problem of die-cutting flying marks.
Hot melt adhesive itself has low release force
If the hot melt adhesive itself has a low release force, then die cutting in summer may be no problem, but in the winter it is easy to have the problem of die-cutting.
Glue drawing and reflow
Another feature of hot melt adhesives is their high fluidity, which is die cut at normal temperatures. Hot melt adhesives are easier to draw and reflow than water gels. In other words, the hot melt adhesive is more likely to stick to the waste side, resulting in a flying target.
Simple and effective solution
In response to the above-mentioned reasons, there have been many predecessors who have written articles and introduced solutions. I will not cite them here. The author introduces a simple but really effective method to everyone, that is, the heating method .
The specific approach is to try to fix an electric heating rod on the equipment, and the installation position is in front of the waste roller at the waste disposal station. The purpose of this is to allow the self-adhesive material to be heated before it is pulled up. After fixing the heating tube, you can try to see if the temperature of the material has risen before discharge. This can effectively improve the problem of winter die-cutting marks for hot melt adhesive materials.
Because the hot melt adhesive will quickly rise after the heat is applied, the bonding force between the facial paper and the base paper is increased, and it is not easy to be peeled off together with the waste side. At the same time, the heating can also reduce the adhesion of the adhesive, the reflow, and the adhesion to the waste side, because the adhesive will become soft at the moment of heating, and the pulled rubber filament is relatively easy to break.
The problem of flying standards is not big, and it is not too small. I wish all label companies can survive this winter.
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