Ink's excessive emulsification and add the additive:
Traditional offset printing for Tea packaging gift boxes, mainly relies on the ink balance to complete the printing process. According to the analysis of transfer ink, ink emulsification is inevitable. But excessive emulsion inks, will result in printing color dodge, stale and other phenomena, the color brightness decreases.
Offset, add various additives according to need, such as thinner, drier etc.. These additives for Tea packaging gift boxes printing are added too much, sometimes also will affect printing color brightness. Diluting agent white ink, oil etc.. White oil is mainly emulsion by magnesium carbonate, stearic acid, mixed oil and water into the ink. The emulsion will make the ink emulsification, cause color bleak. Drier is mainly metal soaps, is also a strong emulsifying agent, drying agent to the effect on stability of ink emulsification up a little, but the amount is too much, will cause serious emulsive ink.
In addition, for printing with less image area, the number of new ink for Tea packaging gift boxes printing added to the ink roller in each cycle is less, so long-term retention in the ink on the inks is subjected to several times the fountain solution mixing, extrusion and rolling, serious emulsification caused by ink, the color is not bright.
from：http://www.won-bon.com/newsd-nid-305.html |
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