Why is the viscosity of water-based ink so important?

   Viscosity is one of the important quality indicators of water-based ink,

and it is also an important factor to determine the printing quality. The ink

viscosity is too low, which is easy to cause poor transferability, insufficient ink

supply, uniform stripes, insufficient transfer ink, and exposure; If the viscosity

is too large, the printed text is not clear, the paste and the amount of transferred

ink are too large, resulting in too thick ink film, easy to fade, ink transmission

difficulties and other disadvantages.

   Correctly understand the viscosity of water-based ink. Generally, the viscosity of

water-based ink has been standardized in ink products according to the category

suitable for printing. There is no need to mix it before use. For personalized products,

it can be customized according to the actual situation of users or on-site deployment.

In the application of ink wash, some users have some misunderstanding about

the viscosity of ink wash. The misunderstanding is that ink wash with high viscosity

can be diluted in a high proportion, which can reduce the printing cost, resulting in

a series of quality defects. Water-based ink is composed of resins, water, amines,

pigments and additives in strict proportion according to the characteristics of

the printed matter.

solid content of the ink and the color rendering of its resin matching. The color

content of pigment in normal ink is sufficient to meet the printing coverage

requirements of ink per unit area under the preset ink layer thickness. A reasonable

proportion of resin can meet the uniform distribution, transmission and drying of

the ink film in the printing process with the help of each component of additives.

Random addition of water destroys the performance of ink, dilutes the color content,

destroys the state of the color in the ink, dilutes the content of resin and other

components, changes the viscosity of ink, affects the transfer performance, drying speed

and the quality of the film, which will bring a series of problems to the printing

industry and print quality.