Which parts does the structure of self-adhesive coated paper label include?

The structure of self-adhesive coated paper labels usually includes the following parts:

1. surface material (face paper)

Definition: The surface material is the direct carrier of the content of the self-adhesive label, and it is also the main visual part of the self-adhesive label.

Material: Coated paper is a common choice of surface material, known for its white paper and good printing results. Coated paper has a smooth surface, uniform ink absorption, and high color reproduction, making it ideal for printing high-quality labels and logos.

Function: In addition to carrying text and image information, the surface material also needs to be able to withstand various physical and chemical effects in the printing process, such as ink attachment, drying and so on.

2. Adhesive

Definition: Adhesive is a layer of adhesive material coated on the back of the surface material, used to attach a self-adhesive label to a variety of substrate surfaces.

Types: A wide variety of adhesives, according to different application scenarios and needs, you can choose different types of adhesives. For example, for labels that require frequent replacement, removable adhesives can be selected; For labels that need to be attached for a long time, permanent adhesives can be selected.

Function: The main function of the adhesive is to achieve a firm paste between the self-adhesive label and the substrate, while ensuring that the self-adhesive label will not fall off or warped under specific conditions (such as temperature and humidity changes).

3. Base paper (release paper)

Definition: The base paper is the carrier and protective layer of the self-adhesive label, which plays a supporting role in the processing of label printing and die-cutting. At the same time, the surface of the base paper is coated with a release agent (usually a layer of silicone oil) to prevent the adhesive from sticking to the base paper during processing.

Material: The material of the base paper is diverse, common are Grassing paper, kraft paper, polyester (PET) and so on. These materials have good stiffness and tensile strength, which can meet the needs of self-adhesive labels during processing and use.

Function: The main function of the backing paper is to protect the adhesive from contamination or damage, and to conveniently peel the adhesive label from the backing paper when applied.

4. Other auxiliary layers (optional)

In some special cases, self-adhesive labels may also include other auxiliary layers, such as surface coatings, coating layers, etc. The main purpose of these auxiliary layers is to improve some properties of the self-adhesive label, such as improving the printing effect and enhancing weather resistance.

In summary, the structure of self-adhesive coated paper label is mainly composed of three parts: surface material (coated paper), adhesive and base paper (release paper). These three parts work together to make the self-adhesive label can play a good role in pasting and marking in various application scenarios.