What are the main components of self-adhesive coated paper?

The main components of self-adhesive coated paper can be analyzed in detail from the perspective of its structure and manufacturing materials. In general, the main components of self-adhesive coated paper include surface materials, adhesives and base paper, but from the perspective of manufacturing process and quality assurance, self-adhesive coated paper can be further subdivided into more parts. The following is the main components of self-adhesive coated paper and their detailed descriptions:

1. Face material

Coated paper: This is the main surface material of self-adhesive coated paper, made of cellulose fiber, the surface is specially treated, so that it has better flatness and printing performance. Coated paper is characterized by high whiteness, good gloss, and bright pattern and text printing effect, which is very suitable for high-quality label production.

2. Adhesive

Glue: The adhesive in self-adhesive coated paper is the key ingredient that enables the label to adhere to a variety of surfaces. According to the different needs of use, you can choose different kinds of glue, such as water-based glue, oil-based glue, hot melt glue and so on. The water-based adhesive has high viscosity and fast drying speed, but it is easy to block the nozzle. Oily adhesive has moderate viscosity and is not easily affected by humidity; Hot melt adhesive has a strong adhesion, suitable for the need for strong adhesive occasions.

3. Backing paper

Release paper or cellophane: This is the material on the back of the self-adhesive coated paper, the main function is to facilitate the adhesion of the glue, and can be easily peeled off from the backing paper when used. Commonly used base paper materials include white, blue, yellow glassine paper or onion paper, kraft paper, polyester (PET), coated paper, polyethylene (PE), etc.

4. Other components (from the perspective of manufacturing process and quality assurance)

Surface coatings: May include corona treatment or printing treatment layers to improve printing results and adhesion.

Coating base: located between the surface material and the adhesive, it may enhance adhesion or protect the surface material.

Release coating (silicon coating) : coated on the surface of the base paper to form a low surface energy non-adhesive coating, which has an isolating effect on the adhesive.

In summary, the main components of self-adhesive coated paper include surface materials (coated paper), adhesives (various glues) and base paper (release paper or cellophane, etc.), as well as other components such as surface coating, coating base and release coating from the perspective of manufacturing process and quality assurance. These components together constitute the structure of the self-adhesive coated paper, so that it has excellent printing performance, adhesion and ease of use.