Floating color refers to the printing ink, the ink film in the pigment in the horizontal direction of the separation layer. This is the concentration of a variety of pigments in the ink film or a variety of changes in the concentration of the surface and a uniform distribution. But there is a significant difference in the color of the previous formula, which has just been produced from the offset printing ink. 

Flooding is refers to the packaging and printing ink in ink film exists the uneven distribution of a variety of colors, usually a streak or honeycomb. To this end, it is often understood that the vertical separation of pigments. 

Floating reasons, we know that in the system of packaging printing ink all containing amphoteric pigment or filler composition may generate floating color, blur, improper ink manufacturing production process or packaging printing operator improper also generate floating color and blur. 

This is not only a problem of the procurement of offset printing ink, Dongguan Yufeng offset printing ink suppliers suggests that: the rheological properties of solvent on the polymer resin dissolved and printing ink and adaptability of packaging and printing process, especially the ink film formation is very important. This represents the common view of China's packaging and printing industry for half a century. In this regard, in order to give full play to the role of the solvent, the general use of a variety of solvents (that is, a mixed solvent) for the match, that is, the real solvent and thinner with the composition. In packaging and printing ink formulation should make solvent and substrate hydrogen bonding similar (similar to phase viscosity); the solubility of the resin in solvent solubility and ink system similar (similar to soluble); the surface tension of resin in solvent surface tension and ink system close (or similar flat); solvent density and binders resin similar density (or similar); mixed solvent try to pay attention to volatile gradient gap similar (similar to dry thoroughly); really solvent and diluent to adaptive printing ratio for maintaining packaging and printing ink.