How to choose the right label glue?

Many customers know what kind of self-adhesive labels they need, but they are stumped on the issue of label glue, and glue is very important for the stickiness of self-adhesive. If the glue is heavy it will fall off completely without stickiness, and it will even damage items. Therefore, before ordering self-adhesive labels, customers must understand their application requirements, so that they can make targeted choices. The characteristics of glue are classified into large categories. , the following can almost meet the selection needs of most customers.

1. Choice of Permanence and Removability:

In terms of the performance of adhesives, they can be generally divided into two categories: permanent adhesives and removable adhesives. (Permanent is generally used in electronic machinery, such as electronic labels, typical: mobile phone battery labels, removable is generally used in food, personal care, etc., such as wet tissue labels, fruit labels, labels on clothes, etc.)

2. The surface of the object to be pasted:

Because labels processed with self-adhesive materials may be labeled on the surface of various materials, such as glass, metal, cardboard, and plastic. And plastic can be further divided into: polyvinyl chloride, high-density polyethylene. Tests have shown that different label surfaces have the greatest impact on performance. (It is best to use glue and materials with the same or similar chemical composition to be pasted with the object)

3. Surface structure of label substrates

Intuitively, a rough label surface requires a glue with a stronger viscosity.

4. Surface shape of the label substrate

The surface of the label substrate can be divided into flat and curved surfaces. If the surface of the label has a certain curvature (for example, the surface of a medicine bottle with a diameter of less than three centimeters), it may require a good fit of the face paper or a glue with a strong viscosity. It is also necessary to use materials with better flexibility and stretch resistance, such as PVC. The flat surface of the object is suitable for a wider range of labeling materials.

5. Cleanliness of label surface

Self-adhesive materials are best suited for labeling substrates with surfaces that are clean, dry, and free of oil and dust. (When any label is applied, the surface of the object to be attached must be kept dry, free of oil and dust, so as to achieve the best labeling effect)

6. Adverse effects of plasticization on glue

Labeling conditions - self-adhesive viscosity needs to be pasted under cold, hot, humid or room temperature conditions.

The environment of use - whether the sticker is exposed to sub-freezing environments, whether it is used outdoors, under heat, humidity or light containing ultraviolet light, and whether it is near a hot car engine.