PVC self-adhesive labels represent a new direction in the printing industry, with increasing application. They can be used on consumer goods, such as hair care product labels and advertising labels; as well as industrial applications, like battery labels, wire labels, tire labels, and warning labels. On the surface, the structure of the PVC self-adhesive printing material consists of the surface material, adhesive, and backing paper. However, personnel introduce that to ensure quality, it also includes back printing and silicon coating.

The surface coating of PVC self-adhesive printing is actually a protective layer, designed to enhance ink acceptance and ease of printing, achieving the purpose of preventing dirt, increasing ink adhesion, and preventing the detachment of printed images. The silicon coating involves applying a layer of silicone oil on the base paper, which makes the surface very smooth and low in surface tension, thereby preventing the adhesive from sticking to the base paper.

The backsheet of the PVC pressure-sensitive label printing is designed to protect the adhesive on the reverse side of the face material, support the face material, and enable it for die-cutting, waste removal, and labeling on applicators. As for the reverse printing, its purpose is to print the manufacturer's registered trademark or design on the back of the backsheet, serving as a promotional and anti-counterfeiting measure.

The face material is the surface that receives the printed graphics and the backside that accepts the adhesive, ultimately applied to the adhesive object. The purpose of the undercoat is to protect the face material and prevent the adhesive from渗透. It enhances the opacity of the fabric; increases the bonding strength between the adhesive and the face material; and prevents plastic face material plasticizers from渗透 into the adhesive, affecting its adhesive properties and reducing the label's bonding strength, leading to label detachment.

Next is the adhesive for PVC self-adhesive label printing. There are various formulations available, suitable for different substrates and occasions. It acts as the bonding material between the self-adhesive label material and the bonding base material. It is also a key component in PVC self-adhesive printing materials and a critical aspect of label application technology.