PVC self-adhesive labels represent a new trend in the printing industry, with their usage expanding widely. These labels can be used on consumer goods such as hair care product labels and advertising labels; they are also suitable for industrial applications, including 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, as personnel introduce, to ensure quality, additional elements like reverse printing and silicon coating are also included.
The surface coating of the PVC self-adhesive printing is actually a protective layer, designed to enhance ink acceptance and ease of printing, while preventing soiling, increasing ink adhesion, and preventing the detachment of printed graphics. The silicon coating involves applying a silicone oil layer to the base paper, creating 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 self-adhesive printing is designed to protect the adhesive on the back of the face material, support the face material, and enable it to be die-cut, waste-removed, and labeled on labeling machines. As for the reverse printing, it serves to print the manufacturer's registered trademark or pattern 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 back that receives adhesive and is ultimately applied to the adhesive material. The purpose of applying the primer is to protect the face material and prevent adhesive penetration. It increases the opacity of the fabric; enhances the bonding strength between the adhesive and the face material; and prevents plastic face material plasticizers from seeping into the adhesive, affecting its adhesive properties and reducing the bonding strength of the label, causing it to peel off.
Next is the adhesive for PVC self-adhesive label printing. There are various formulations to suit different substrates and occasions. It acts as the bonding material between the self-adhesive label material and the base material, serving as a connector. It is also a key component in PVC self-adhesive printing materials and a critical aspect of label application technology.
