Self-adhesive is a kind of material, also called self-adhesive label material. It is a composite material with paper, film or other special materials as the fabric, adhesive on the back, and silicon-coated protective paper as the base paper. And after printing, die-cutting, etc., it becomes a finished label.
1. Self-adhesive is easy to get dirty on the back when printing on the whole page. This is due to the poor ink absorption of the coated paper on the self-adhesive surface. Adhesive, do not add dry oil when the weather is hot. It is often easy to get dirty on the back of the printed page, and it is usually solved by spraying powder. Although the printing anti-sticking dust spray contains pure vegetable materials and has good dispersibility and fluidity, the use of powder spray will directly affect the printed product. The surface is glossy, so that the ink is not bright, and pollutes the environment, and it also affects the accuracy of the offset press.
2. To overcome the disadvantages of large water and large ink in offset printing, the ink can not be adjusted too thin, too thin and it is easy to stain the backside. If it is too thin, some new ink can be added to enhance the ink viscosity.
3. Pay attention to the balance of water and ink in offset printing, and control the water content of the printing plate. Use the minimum amount of water on the printing plate without dirtying the printing plate. The sticker is smooth and smooth. When printing on the solid surface, you must print dark colors first, and the amount of ink printed is sufficient, and the back is not sticky, and then Overprint the background color thinly, so that the printed product will have a better finish.
