Before using the cup seal labels https://www.print-labels.net/product/plastic-labels/cup-seal-labels.html , it is necessary to test the type of adhesive, so that we can quickly understand whether this adhesive belongs to adhesive hot melt adhesive or... moreBefore using the cup seal labels https://www.print-labels.net/product/plastic-labels/cup-seal-labels.html , it is necessary to test the type of adhesive, so that we can quickly understand whether this adhesive belongs to adhesive hot melt adhesive or adhesive water paper. Some adhesives will react with some substances, for example, the adhesive used as labels will contaminate special fabrics under certain conditions.
Some labels that require temporary tackiness produce long-term tackiness in an exposed environment. In addition, some labels will lose stickiness under certain circumstances.
There is a certain reason why the cup seal labels are not firm. Some customers think that this is a quality problem, but in fact, it is not a quality problem. Here are three methods for testing the adhesiveness of cup seal labels.
1. Initial adhesion: The common method is rolling ball method, which is to fix the adhesive face-up on an inclined plane and then slide steel balls of different sizes down from the top.... less
