How to distinguish water glue from hot melt adhesive for self-adhesive labels? 1? three

Distinguishing method: Look at the color and smell.

1. Water gel is generally white and has no pungent smell, and its water solubility will be the direction of coating in the future because of its functionality, environmental protection and low price;

2. Hot melt adhesive is nontoxic and tasteless. It belongs to environmental protection chemical products and is suitable for rough surfaces or low-temperature use.

Precautions:

1. For cylindrical bottles, especially those with a diameter of less than 3MM, the materials should be carefully selected.

2. If the label size is too large or too small, you should pay attention to the actual test.

3. If the object to be pasted has an irregular surface or even a spherical surface, there are special considerations for the label material type, thickness and adhesive.

4. Some rough surfaces, such as corrugated boxes, will affect labeling, and the varnish on the surface of corrugated boxes will also have an impact.

5, automatic labeling machine labels, labeling test can be carried out if necessary.

6, even if the label is labeled at room temperature, pay attention to whether it experiences high temperature during export transportation and use.

7. Too much water or oil will affect the characteristics of the adhesive. Attention should be paid to the environment and temperature of labeling.

8. Plasticizer sometimes oozes from the surface of soft PVC, so special attention should be paid to selecting the appropriate adhesive.