1. The back of the self-adhesive label sold by heat transfer label manufacturers is easy to get dirty when it is printed on the whole page. This is due to the poor ink absorption of the coated paper on the surface of the self-adhesive label. When printing, try to use the original ink instead of 6# mixing oil. Detackifier, anti-adhesive agent; do not add dry oil when the weather is hot, it is easy to get dirty on the back of the printed page, and dusting is often used to solve it, although the printing anti-adhesive dusting agent contains pure vegetable materials and is dispersible And fluidity is good, but the use of powder spray will directly affect the surface gloss of the printed product, make the ink color not bright, and pollute the environment, and also affect the accuracy of the offset press.
2. Pay attention to the balance of water and ink in offset printing, and control the water size of printing plate. Use the minimum amount of moisture on the surface of the sticker on the premise that the sticker does not dirty the printing plate. The sticker is smooth and smooth. When printing on the full page, you must first print dark colors, and the amount of ink is enough to print. The back is not sticky and dirty. Then, overprint the background color thinly, the smoothness of such printed products will be better.
3. To overcome the disadvantages of large water and large ink in the offset printing of self-adhesive labels, the ink can not be adjusted too thin, too thin, and the back is easy to stain. If it is too thin, some new ink can be added to enhance the ink viscosity.

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