How to prevent waterproof stickers

When the sticker is printed on the field, the back side is also easy to be dirty. It is because the ink-repellent surface of the self-adhesive surface is poor in ink absorption. When printing, try to use the original barrel ink, without adding varnish, add some de-adhesive agent. , anti-adhesive agent, do not add dry oil when the weather is hot. The printed version is often easy to stick on the back, usually by dusting. Although the printed anti-stick dusting powder contains pure plant material, the dispersibility and fluidity are good, but the use of powder spray directly affects the printed product. The surface gloss makes the ink color not bright, and it pollutes the environment, and it also affects the accuracy of the offset press.

Pay attention to the balance of offset ink and ink, and control the moisture content of the printing plate. Use the least amount of water on the premise of not dirty plates. The self-adhesive is smooth and smooth. When printing the printed version, you must first print the dark color, and the ink is printed on the foot. The back is not sticky and then the dirt is correct. Thinly overprint the background color, such a printed product will have a better finish.

Overcome the drawbacks of large ink in the offset printing, the ink can not be adjusted too thin, too thin is easy to dirty on the back, if too thin can add some new ink to enhance the viscosity of the ink.

Self-adhesive printing paste roller and multiple sheets of paper. The self-adhesive is uniformly coated on the back side of the paper with a layer of self-adhesive layer, adhered to a layer of easily peeled wax paper, in the hot weather in summer, the temperature is high, and the adhesive is pressed under the roller between the rollers. The glue will flow out from the gap of the paper. The micro-adhesive glue will flow out under the pressure of high temperature and mechanical roller. The sticky and hair-connecting will directly affect the accurate overprinting of the normal paper feeding. The adhesive on the edge of the paper will Paste on the blanket cylinder, it is easy to stick the adhesive on the roller, the ink roller, and the impression cylinder, commonly known as "striping".

This is one of the biggest drawbacks of stickers in printing. In the actual work of offset printing, we have encountered such a solution: after the self-adhesive cutting, before the offset printing, the side and all sides of the incision should be rubbed with talcum powder and vegetable starch. Sticky dusty powder), so that the self-adhesive liquid is wiped off and applied, so as to avoid the drawbacks of the self-adhesive flow caused by the roller pressure and the weather, the effect is very good.