Apr. 07, 2023
The ink blending of cosmetic packaging box printing is technical to a certain extent, which directly affects the color and beauty of the box. During the deployment process, according to the color matching results, analyze and determine the exact ratio, and then make fine adjustments until the colors are aligned.
How does the attraction between ink and substrate produce drops?
It is mainly to allow the force between atoms (chemical bond) and the force between molecules (hydrogen bond force and van der Waals force) in the ink system, as well as the force of printing machinery and the electrostatic attraction of the substrate interface to produce ink and ink. produced by the attraction between the substrates.
What are the characteristics and classification of packaging printing ink colors?
The color characteristics of printing ink for cosmetic packaging boxes are hue, lightness (brightness), and saturation (chroma). The packaging and printing ink colors are classified into two categories: color and non-color (color refers to colors other than black ink, white ink and gray ink; non-color refers to black ink, white ink and gray ink with intermediate colors).
When can the appropriate amount of ink defoamer be determined?
Generally speaking, before the ink is mass-produced, a small sample test should be carried out first. After the tested ink is first tested and recorded in various technical indicators, the next day (24 hours), and then carry out the same steps above. The detection method was measured again. Usually the last time is the actual technical index of the ink.
But in actual production, what should some small ink companies do if they don’t have special laboratories or test tools? The experience of the manufacturer is: in the same detection method as above, two items need to be added (one is to put the produced ink in a container with In hot or cold water, wait until the ink temperature reaches 25°C and then test the above items, carry out two consecutive times, and calculate the average value, which is the actual data of the printing ink). Only in this way can the balance between the performance of the defoamer and the shrinkage cavity be achieved. Otherwise, if you are not careful, you will mistakenly think that the defoamer is insufficient and add too much, which will often make it more difficult to eliminate the oxygen bubbles and cause shrinkage. Hole printing failure.
