水性调墨油配方（Formula of water ink）.docVIP

水性调墨油配方（Formula of water ink） Formulation and printability of water-based environmental inks Key words: water-based ink, water-based environmental protection ink, environmental protection ink, environmental protection ink formulation, printing adaptability Compared with traditional solvent based inks, water-based ink, good environmental performance, but poor gloss, brightness is not enough, the anti friction performance is poor, so the need of printing a layer of light oil to protect the ink in the ink coating on the surface, resulting in increased cost of printing, promotion of water-based ink has caused some difficulties. In gravure printing, because of the drying speed of water-based ink is relatively slow, the current gravure printing equipment is not suitable for printing water-based ink. Water based ink takes water as the solvent, and the drying speed is slower than the solvent based ink. Especially in the printing of some volatile substrates, the drying speed of water-based ink is very high. The plate is water-based gravure ink and a barrier net hole depth for water-based ink on the plate than the traditional solvent based ink printing resistance strength is shallow, but less solvent inks are generally around 1/10. The control of drying speed of water-based ink is not only related to auxiliaries, but also related to ink, pigment, ink proportion, ink particle radius and pigment itself. General requirements of water-based ink viscosity in 15 ~25 (3#Zahn cup), low viscosity and easy to cause the ink paste version is not uniform in distribution and shrinkage of the substrate surface, and high viscosity is caused by the network point of congestion, dry version of the situation, because the changes in viscosity are affected by the PH value. Water ink pH control in general between 8.0~9.0 and resin ink generally use acrylic resin, used to adjust the ink pH regulator of ammonia, the ammonia volatilization caused by lowering of pH in the storage and use process, there