What is the relationship between the fluidity and viscosity of ink?

author: Uvink

2022-12-28

What is the relationship between the fluidity and viscosity of ink?What role does

the fluidity of ink play? The relationship between fluidity and viscosity is inversely

proportional. The greater the fluidity, the lower the viscosity; The lower the fluidity,

the higher the viscosity. The fluidity of the ink is good, which can ensure the quality

of printing to a certain extent, because under the same pressure, the ink can easily

spread the ink film with uniform thickness on the surface of the ink roller, and

maintain good transfer, so that there will be no uneven depth prints during printing.

What is the relationship between the fluidity and viscosity of ink?There are many

ways to dry ink. In fact, different inks will use different methods to dry ink according to

their characteristics and printing methods. Generally speaking, there are no following

kinds: ink oxidation: this drying form of polymer conjunctiva is the main drying form

of lithography; Permeation drying: when the ink is printed on the paper, its binder will

penetrate into the internal drying of the paper due to the capillary action of the paper

fiber; Full play drying: After the ink is printed on the paper, only part of it will penetrate

into the paper, but most of it will be used.

What is the relationship between the fluidity and viscosity of ink?Why add desiccant

to the ink? When the drying capacity of the ink binder itself is not enough to meet the

time requirements of printing and chromaticity, we will add a drier to the ink to speed

up the drying. The drier can combine with the antioxidant in the ink to eliminate and

reduce the reaction of the antioxidant. In addition, the drier can directly absorb the

oxygen in the air, making it easier for the ink to obtain the oxygen needed for drying,

and accelerating oxidation drying.