1. The sticker is easy to get dirty on the back when it is printed on the ground. It is due to the poor ink absorption of the coated paper on the surface of the sticker. Try to use the original barrel ink when printing, do not add 6 # ink, add some debonding properly Do not add dry oil when the weather is hot. Printed version of the field is often prone to sticky dirt on the back, which is usually solved by powder spraying. Although the printed anti-sticking powder spray contains pure plant materials, the dispersibility and fluidity are good, but the use of powder spray will directly affect the printing product. The surface gloss makes the ink color not bright, and pollutes the environment, and it also has an impact on the accuracy of the offset press.

2. Pay attention to the offset ink-water balance and control the size of the water on the printing plate. Use the least amount of plate moisture on the premise that the printing plate is not dirty. The adhesive is smooth and smooth. When printing a full plate, the dark color must be printed first, and the ink volume is printed enough. The back surface is not sticky, and then Thinly overprint the background color, such a printed product will have a better finish.

3. Overcome the disadvantages of water and ink in offset printing. The ink cannot be adjusted too thin. If it is too thin, it is easy to get dirty on the back. If it is too thin, some new ink can be added to enhance the viscosity of the ink.

Color Peroxide Developer

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