The viscosity of the ink is important for all kinds of inks, it determines the fluidity of the ink. In the printing process, if the viscosity of the ink is too high, it is prone to disadvantages such as pasting and stacking; if the viscosity is too low, it will cause problems such as uneven ink transfer and dot expansion. Experimentally tested the viscosity of the ink formulated in the aqueous epoxy resin emulsion with different solid content, as shown in the table below. The performance of the ink is mainly reflected by the binder, so the higher the solid content of the water-based epoxy resin emulsion, the better, and the general ink viscosity requirement is about 25~60s, so the solid content of the water-based epoxy resin emulsion for preparing ink should be around 35%. very good.
Ink Viscosity Test Use 4 cups to test the ink viscosity according to the method of 4 cups in GB/T 13217.4-2008, the unit is s.
