Ink adhesion, cohesion and color brightness and other factors, to a large extent affect the quality of the product printing. The change of temperature and humidity in the environment directly affects the viscosity and cohesion of the ink. The low temperature of the printing environment, the slow movement of the molecules of the ink-linked material, and the tendency of the ink to be in a solidified state, such that the cohesion force is large, the fluidity is deteriorated, the printing process causes poor ink transfer, uneven ink distribution, and the printing process is easy. Adhesion of paper coating layer and paper hair, and cause chain printing quality problems such as paste printing and rough printing. When the temperature is too high, the ink is thin, the coloring power is weakened, and the color of the ink layer of the printed product is bound to be affected. In addition to the temperature increase caused by environmental factors will have an impact on the ink, the machine's high-speed rotation friction heat, but also make the ink thinning, fluidity increases, tinting strength decreased. Therefore, when the ink is blended, the speed of the machine should be taken into account, and the degree of dilute ink should be adjusted properly to ensure the quality of the printing ink.
In addition, humidity also has an effect on ink performance. Practice has shown that the humidity of the environment is high and the ink layer of the printed product is slow. On the contrary, the printing ink layer dries quickly. Because of the high humidity in the air, the moisture content of printed paper is high. Humidity affects the ink more than temperature. In general, if the temperature is at 20°C, the relative humidity will increase from 65% to 75%, and the difference in ink drying speed can be up to 1-2 times.
As the temperature and humidity changes in the printing environment affect the ink and the printing, in the absence of air conditioning equipment, it is necessary to ease the influence of ink on the temperature and humidity changes and ensure the overprint effect and quality of color prints. Place the prepared ink in a place around 25°C so that the ink maintains a reasonable temperature and humidity, and a better printing effect can be obtained.
(Text / Kang Qilai)
In addition, humidity also has an effect on ink performance. Practice has shown that the humidity of the environment is high and the ink layer of the printed product is slow. On the contrary, the printing ink layer dries quickly. Because of the high humidity in the air, the moisture content of printed paper is high. Humidity affects the ink more than temperature. In general, if the temperature is at 20°C, the relative humidity will increase from 65% to 75%, and the difference in ink drying speed can be up to 1-2 times.
As the temperature and humidity changes in the printing environment affect the ink and the printing, in the absence of air conditioning equipment, it is necessary to ease the influence of ink on the temperature and humidity changes and ensure the overprint effect and quality of color prints. Place the prepared ink in a place around 25°C so that the ink maintains a reasonable temperature and humidity, and a better printing effect can be obtained.
(Text / Kang Qilai)
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