How to solve the high viscosity of ink? Ink can be simply divided into four processes: offset printing, flexo printing, gravure printing, and screen printing. When the viscosity of the ink is too high, it is necessary to reduce the viscosity. So what are the methods to reduce the viscosity of the ink?
The size of the ink concentration determines the depth of the ink hue. When the ink density is high, the printing hue is darker; otherwise, the printing hue is lighter. The ink with high concentration consumes relatively less ink in printing, and the ink quality is also better; on the contrary, the ink with small concentration uses relatively more ink in printing, and the ink color is relatively light. The concentration of the ink is particularly prominent when printing large-area graphic products. It can be seen that the ink concentration directly affects the printing quality of the product.
1. Polyene wax improves the effect of pigment transfer in the ink printing process: adding polyene wax can reduce the viscosity of ink printing, improve the fluidity of the pigment, and evenly disperse the pigment, so that the pigment can smoothly enter the network and improve the pigment transfer , to improve the printing effect.
2. Polyene wax solves the problem of ink printing dirty plate: the eradication of plate blocking is not only related to the hardness of the squeegee, the pressure of the squeegee, the contact angle of the squeegee, the quality of the printing plate cylinder, but also the printing viscosity of the ink. related. When the ink printing viscosity is too high, the fluidity of pigments and other substances is poor, and the pigment and other substances cannot be dispersed evenly, and they are easy to accumulate together. It can effectively reduce the viscosity and improve the fluidity of the ink, and play a good lubricating role in the printing process to avoid dirty plate failure.
3. Ink printing viscosity affects the gloss of printed products and the fastness of ink layer: Polyene wax emulsion can improve the dispersibility and gloss of pigments, and ensure the fastness and gloss of pigments in the printing process of ink.
4. The viscosity of ink printing is easy to cause electrostatic phenomenon: as the viscosity of ink printing decreases, electrostatic phenomena such as whiskers, black ink, poor transfer, and extremely irregular pigments will occur, and polyene wax is added. Later, it can play the role of lubricating and dispersing, reducing the effect and electrostatic force of pigment particles in the ink system.
In order to effectively solve the problem of viscosity in the ink printing process, it is necessary to add 1%~3% of TIANSHI polyene wax to the ink, which can change the fluidity of the ink, reduce the viscosity of the system, and at the same time can improve the smoothness of the ink, Abrasion resistance, scratch resistance, improve fresh water resistance, speed up fixation, make the dots of the printed product complete, and reduce the disadvantages of caking, scratching, and smearing.
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