Effect of Viscosity on Offset Ink
The viscosity of offset printing ink will affect the printing effect. If the ink is too thin, the ink flow will be unstable, and the printed pattern will not be clear. If the ink is too thick, it will cause accumulation on the surface of the printed matter. If the viscosity of the ink is too high, it will have adverse effects on the printing machine, such as damaging the pumps, nozzles and other components of the printing machine, and affecting the life of the printing machine. Excessive ink viscosity will lead to increased ink consumption, and will also affect printing speed and efficiency. Viscosity testing of offset printing inks can effectively control printing quality, protect equipment, and save costs. It is a very important link in the printing industry.
Steps
Rotational viscometers are widely used in viscosity testing of offset printing inks, which can help manufacturers control the viscosity and fluidity of offset printing inks to ensure printing quality and stability.
The following are the basic steps of the Rotational Viscometer in the viscosity detection of offset printing ink:
Sample preparation: Stir the offset printing ink sample to be tested evenly and bring it to the required temperature.
Instrument preparation: turn on the Rotational Viscometer, adjust the temperature and rotation speed, and calibrate the zero point.
Sample test: inject the sample into the viscometer, pay attention to avoid the generation of air bubbles, record the reading, and record the time and temperature. Repeat the test three times and take the average value.
Data processing: Calculate the viscosity value of the sample according to the readings obtained from the experiment, and perform data analysis.
NBCHAO reminds you: when testing the viscosity of offset printing ink, you should pay attention to the temperature and stirring time of the sample to ensure the uniformity and stability of the sample. In addition, different types of offset printing inks, such as water-based offset printing inks, oil-based offset printing inks, etc., may also have different measurement conditions and data processing methods, which need to be adjusted according to the actual situation. At the same time, when using a Rotational Viscometer to detect offset printing ink, attention should also be paid to the maintenance and maintenance of the instrument to ensure the accuracy and stability of the test results.
