At present, self-adhesive labels are mostly used in barcode printers. The self-adhesive label is composed of three parts: release paper, surface paper and adhesive for bonding the two. The release paper is commonly known as "bottom paper" and its surface is oily. The bottom paper has an isolation effect on the adhesive, so it is used It is used as an attachment of the surface paper to ensure the backing paper. Ordinary backing paper is rough in texture and thicker. According to its color, it is yellow, white, etc. The self-adhesive backing paper commonly used in general printing is economical yellow backing paper. GLASSINE backing paper has dense and uniform texture, good internal strength and light transmittance, and is a common material for making barcode labels. Its common colors are blue and white. We usually talk about label paper as coated paper, thermal paper, etc., referring to surface paper.

The surface paper is the carrier of the printed content of the label. According to its material, it can be divided into coated paper, thermal paper, PET, PVC and other types. Adhesive is coated on the back of the facial paper. On the one hand, it ensures the moderate adhesion between the backing paper and the facial paper, and on the other hand, it ensures that the facial paper can be firmly adhered to the paste after it is peeled off.