What is the relationship between ink composition and performance (2)

V. What is the improvement of ink varnish in printing?

The commonly used varnish is usually No. 6 and No. 0. No. 6 varnish is used to increase the fluidity of the ink, improve the transferability of the ink, and reduce the concentration, viscosity, and drying of the ink. No. 0 oil has a larger viscosity. When the viscosity of the ink is insufficient to cause the ink to be printed or the ink is bad, the appropriate amount of No. 0 oil is loosened and added to the ink, which can increase the viscosity and adhesion of the ink.

Six, auxiliary materials are the basis for compositional comparison and performance applications

Ingredients in inks are generally classified into anti-tack agents, desiccants, additives, abdomens, anti-friction agents, anti-dry agents, and brightening oils. Recognizing the knowledge, but with more profound implications, how many people truly realized that the author shared the knowledge gained by consulting a large amount of information. To start with anti-adhesion, after adding an appropriate amount of anti-adhesion agent to the ink, it can prevent the printed back sheet from being dirty on the back due to the ink layer not being dried, thus ensuring product quality; the desiccant is divided into two types of white oil and red dry oil. . Red dry oil is a desiccant based on cobalt naphthalate. It is a purple-red paste liquid and is suitable for adding in dark ink. Its dry form is mainly based on the surface of the ink layer. The dosage is 1%. -2% between. White dry oil is a mixture of cobalt, manganese, and lead metal salts, commonly known as mixed dry oil, with a full-drying effect inside and outside the ink film, the dryness is not strong, but the drying effect is good, and It is white translucent and has no effect on hue after adding light-colored ink. Additive is a white transparent paste substance. After adding proper amount of ink, it can eliminate paper lint and powder off phenomenon to prevent layout and blanket pile powder. The hair remover is a catastrophic disease; the lighter is a paste-like transparent material with good gloss and good printing properties. After adding color inks, it can dilute the printing process effect of ink hue; anti-friction agent it is A wax paste formulated with polyethylene wax and high-boiling point kerosene, and 1%-5% rubbing resistant agent added to the printing ink, can improve the abrasion resistance of the printing ink layer, and can reduce the viscosity of the ink and reduce the chance of sticking. It is made of polyethylene wax and high-boiling point kerosene and other wax paste, adding 1% -5% rubbing agent in the printing ink, can improve the wear resistance of the printing ink layer, and can reduce the ink viscosity reduction occurs Dirty opportunity; last Let's look at the bright oil. In addition to the gloss oil, the relief ink is added with the right amount of bright oil, which can increase the ink's fluidity, help the uniformity of the ink, and greatly improve the printing ink. The brightness of the film allows the ink layer to have a good effect of wear resistance, light resistance and fading prevention. Because the bright oil is fast, the ink drying speed is also increased after the ink is added. Therefore, this should be fully taken into account when the ink is transferred.

Conclusion

From this we can recognize some of the problems that we can't usually see. In today's world, we can allow some things to exist. After all, things that exist have the truth of his existence. It is like an auxiliary relationship between the composition and properties of inks.