Tip: Solve the problem of winter ink thickening
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Low winter temperatures are an external factor in which the ink thickens. Under the influence of temperature, the thick change of the ink (original ink) is a physical phenomenon, but the change is the form, not the essence (the basic performance of the ink).
The ink is too thick and has a high viscosity, but it is best not to adjust the viscosity with a thinner or varnish. Because when the user needs to adjust the ink, the total amount of various additives that the ink manufacturer can produce is limited, beyond the limit, even if it can be used, it also weakens the basic performance of the ink and affects printing. Quality printing technology. In addition, the viscosity and consistency of the ink are related, and here refers to its nature rather than its phenomenon. In practice, this is often the case, the ink consistency is large, but the viscosity is small, and its fluidity is still large. Therefore, an ink having a large consistency does not necessarily have a large viscosity, and an ink having a large viscosity is not necessarily thick.
The phenomenon of ink thickening caused by temperature can be solved by the following methods: (1) Place the original ink on the radiator or next to the heating, and slowly warm it up to gradually return to its original state. (2) When using it, use boiling water for external heating. The specific method is to pour the boiling water into the basin, and then put the original barrel (box) ink in the water, but prevent the water vapor from immersing, when the water temperature drops to about 27 degrees Celsius. Take out, open the lid and mix well to use. The temperature in the printing shop is preferably maintained at around 27 degrees Celsius.
The ink is also thick at normal temperatures because the consistency of the ink reflects the rheological properties of the ink to some extent. If it is not due to external factors, it can be summarized into the following two reasons: First, it is caused by strong thixotropic in the original structure of the original ink, but it can still be used after being restored to its original state by stirring; Deteriorated inks that are generated due to improper storage cannot be used.