The advantages of using black glue for self-adhesive labels

When ordinary self-adhesive labels are used to cover dark-colored or highly complexly printed old labels, the information often becomes "invisible" due to the material's transparency. However, black glossy paper with a high-density black coating as the base, combined with a high-white-content glossy paper surface, forms a "double-layer" structure - the black base completely blocks the traces of the old labels, while the white printing layer ensures that the new content is clear and sharp, truly achieving the effect of "renewal after just one application".