PVC self-adhesive labels represent a new direction in the printing industry, with increasing applications. They can be used for household items such as hair care product labels, advertising labels, and also for industrial purposes like battery labels, wire labels, tire labels, and warning labels. On the surface, the structure of PVC self-adhesive printing materials consists of the surface material, adhesive, and backing paper. However, personnel introduction states that to ensure quality, it also includes back printing and silicon coating.

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

The backing paper for PVC dry offset printing is used to protect the adhesive on the backside of the face material, support the face material, and enable it to undergo die-cutting, waste removal, and labeling on a labeling machine. As for the reverse printing, its purpose is to print the manufacturer's registered trademark or design on the backside of the backing paper, serving as a promotional tool and anti-counterfeiting measure.

The face material is the surface that accepts printing graphics and the backside that accepts adhesive and is 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 materials' plasticizers from渗透 into the adhesive, affecting its adhesive properties, leading to reduced bonding strength of the labels and label detachment.

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