What is the relationship between ink concentration and Cigarette Storage Boxes?

What is the relationship between ink concentration and Cigarette Storage Boxes?

What is the relationship between ink concentration and printing quality?

The so-called ink concentration is the coloring force of ink, it is a reflection of the dispersion of ink and the size of the pigment content in ink. That is to say, the higher the dispersion of the pigment, the higher the concentration of the ink; The higher the pigment content in the ink, the greater its concentration. In addition to the pigment determines the concentration of ink, linking materials, fillers and additives, to a certain extent, also affect the concentration of ink. The production process shows that the concentration of ink is one of the important indicators affecting the quality of printing. Therefore, the correct understanding and understanding of several factors related to the concentration of ink is of great significance for the production process control of printing process and the improvement of product printing quality.

Ink is a hydrophobic colloid, it is composed of pigment, binder, filler and additives and other components of the uniform mixture. Pigment is a coloring substance that plays the role of color in ink. It is a kind of insoluble in water and insoluble in binders, but can be evenly dispersed in the binders of colored material, solid powder. The size of pigment content in the ink determines the durability and concentration of the ink, but also affects the drying performance of the ink. Pigment, as the main material of color rendering, plays a decisive role in the quality and suitability of ink. Therefore, for printing, only fine pigment particles, large oil absorption, small specific gravity, small hiding power, strong coloring power, good stability, less color, bright color, and has good performance of heat resistance, light resistance and acid and alkali resistance, printing ink can obtain better quality effect.

According to the properties and chemical composition of pigments, pigments are divided into inorganic pigments and organic pigments. Inorganic pigments include various metal oxides, chromates, carbonates, sulfates and sulfides, such as aluminum powder, copper powder, carbon black, zinc white and titanium white, etc., all belong to the category of inorganic pigments. Inorganic pigments have good light resistance, heat resistance, and large ratio, strong hiding power, but not suitable for multi-color, high-speed printing requirements. The organic pigments commonly used include pigment of color origin and pigment of color lake. The main pigments are phthalocyanine pigments, nitroso pigments, azo pigments and reductive pigments. Lake pigments include basic dye lake, azo lake pigment and acid dye lake. The vast majority of organic pigments have good coloring power, small particles, light specific gravity, soft texture, bright color and high concentration advantages, is the main raw materials of color ink. Linking material is also the main component of ink, it is the ink to become a fluid raw material, with a certain viscosity, it will play the solid particles such as powder pigments mixed together, and make the pigment transfer, adhesion to the printing, at the same time make the printing has a certain gloss. Its color, tension, viscosity, water resistance, dryness is an important factor affecting the performance of the ink, the size of its dosage, is also an important condition to change the fluidity and concentration of ink. The filling material is a fine, white powdery solid substance, so it can be evenly and well dispersed in the binder. Like potassium sulfate, magnesium carbonate, calcium carbonate and aluminum hydroxide are fillers, they play a role in adjusting the ink ink, consistency and concentration. Ink with pigment, bonding material, filling material respectively with a certain proportion of processing into finished ink, often due to the different printing conditions, the original ink thin, light and dry may not be able to adapt to a variety of conditions, generally through the use of some additives to adjust, such as anti-stick agent, adhesive, dry oil, light paste and light oil, these additives added to the ink, It will also change the concentration of the ink.

The concentration of ink, its consistency is also large, so the size of the ink concentration, determines the depth of the ink hue. When the ink concentration is large, the printing color will be darker; On the contrary, the printing color is lighter. The concentration of ink in printing ink consumption is relatively less, ink quality is better; On the contrary, the concentration of ink in the printing ink is relatively more, the ink color is relatively light. The concentration of ink in the printing of large-area plate products, the printing effect is particularly outstanding. It can be seen that the concentration of ink directly affects the printing quality of the product. Therefore, when printing fine line or fine line products, it is generally necessary to choose high concentration of ink to print, and printing field layout products are suitable to use slightly lower concentration of ink to print. Because of the "thixotropic" side of the ink, when the printing environment temperature is high, the machine speed is fast, the ink becomes thinner when heated, and its concentration decreases, which requires the printing ink with a slightly higher concentration, which can better ensure the quality of the product ink. On the contrary, you can choose a slightly lower concentration of ink to print.

If the concentration of small ink is used for printing background color or overlapping color plate, it is necessary to increase the amount of layout ink to obtain the required printing hue, but it is easy to make the product too bad. Based on this situation, the ink used in color printing products generally takes the appropriate shade, the concentration is also appropriate to increase, the printing effect is better, and is conducive to the anti-stick printing. In addition, printing a large area of field edition, line edition or screen edition, the printing speed should be adjusted slowly, in order to reduce the friction coefficient and heat in the printing process, to prevent because the temperature rises too fast, so that the ink is easy to become thin and liquidity increases, resulting in the reduction of concentration, printing ink color becomes light.

Process practice, analysis shows that the original ink is not used, its concentration is unchanged, but in the process of use, with the consistency and fluidity of the variation, the concentration also changes. The change of printing speed, temperature and the size of the dosage of liquid, will affect the concentration of ink. If the layout moisture in the printing process is too large, it will dilute the ink concentration and make the ink color appear pale. It can be seen that the concentration of ink is a variable factor that affects the quality of the product ink. Therefore, it is of great guiding significance to correctly understand and understand some situations related to the concentration of ink and take corresponding technological measures for printing to ensure the quality of printing ink.