PVC self-adhesive labels represent a new trend in the printing industry, with their application becoming increasingly widespread. These labels can be used for consumer products such as hair care product labels, advertising labels, and so on; they are also suitable for industrial applications like battery labels, wire labels, tire labels, and warning labels. On the surface, the structure of PVC self-adhesive printing materials consists of three parts: the surface material, adhesive, and backing paper. However, as personnel explain, to ensure quality, the process also includes back printing and silicon coating.
The surface coating of the PVC self-adhesive printing is actually a protective layer, designed to enhance the ink acceptance and ease of printing, achieving the purpose of preventing dirt, increasing ink adhesion, and preventing the detachment of printed images. The silicone coating involves applying a silicone oil layer to the base paper, which makes the surface very smooth and low in surface tension, thus preventing the adhesive from sticking to the base paper.
The backing paper for PVC self-adhesive printing is designed to protect the adhesive on the reverse side of the face material, support the face material, and enable it to undergo die-cutting, waste removal, and labeling on the labeling machine. As for the reverse printing, it serves to print the manufacturer's registered trademark or design on the back of the backing paper, acting as a form of promotion and anti-counterfeiting.
The face material is the surface that accepts printed graphics and the backside that accepts adhesive, ultimately applied to the adhesive object. The purpose of the primer is to protect the face material and prevent adhesive penetration. 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 and reducing the label's bonding strength, leading to label detachment.
Next is the adhesive for PVC self-adhesive printed labels. The adhesive comes in various formulations, suitable for different substrates and applications. It serves as the bonding material between the self-adhesive label material and the base material, acting as a connector. It is also a key component in the PVC self-adhesive printing material and a critical aspect of label application technology.
