Status Analysis of Label Printing Inks (2)

(7) Bad ink transfer. Cause: The type of ink and printing materials do not match, ink viscosity is too high, static electricity and so on. Solution: Replace ink, adjust ink viscosity, add antistatic agent.

(8) color cast. Reasons: Inaccurate hue of ink, improper ink drying speed, poor ink stability, performance of printing materials, and changes in the printing process. Solution: Replace the ink, adjust the solvent ratio, and adjust the printing process parameters.

(9) Static electricity. Cause: The ink is too thin, the printing speed is too fast, and the environment is too dry. Solution: Add antistatic agent, increase ink viscosity, reduce printing speed, adjust humidity, etc.

In the printing process, the following issues should also be noted:

(1) Use the same brand of ink produced by the same ink manufacturer to avoid printing failures of different manufacturers and different types of inks.

(2) The ink is fully stirred before use, and it is often stirred during the printing process to ensure that the ink system is evenly dispersed.

(3) Each deployment of the ink should not be too much, should follow the principle of "less add, ground plus", not only is conducive to the stability of ink performance, but also can effectively avoid waste; In addition, for spot color inks, it should also be prepared recording.

(4) In the printing process, in order to ensure the quality of label prints and smooth production, certain additives, such as antistatic agents, defoamers, and rewinders, should be added to the ink. Note that the amount of addition must be controlled. Within the prescribed range.

There are many deficiencies in the label printing ink on the market. The most prominent problem is the ink hue deviation problem: on the one hand, the hue of the same ink produced by different ink manufacturers is different; on the other hand, even the same ink produced by the same manufacturer. Depending on the batch, the hue can deviate, sometimes even large. For this reason, printing companies often have to stop the commissioning, which is very detrimental to the stability of the printing quality, and brings great inconvenience to production, which seriously hampers the improvement of the quality of printed matter.