During the production of coatings, the disperse equipment has a important infects to disperse state of coatings, the using capability of optimal pigment ( color viscidity, envelop force and endurance etc.) and also pay a great role in the capabilities of lacquer liquid & film results from this. So, the same as choosing the prescription, to choosing the advanced and high efficiency disperse equipment is the most important process for coatings production.

In a long time, coatings equipment are mark up of disperse machine, sand mill machine and 3-roller machine. Those equipment have the different functions for different needing, but they are all have the limitations. Such as: for disperse machine, when producing the middle and high grade coatings, it could only serve for pre-disperse and could not add up to the requiring crush effect. For sand mill machine, it could production continuously, but it is not suitable for apply in hard disperse materials. When the material is high viscidity, it is hard to process, hard to clean and high reminds. For 3-roller machine, it is suitable for hard disperse and high viscidity materials, but its open type operation brings to bad work circumstance, bad safety and high material lost, it also has disadvantages such as: complex construction, hard adjust and low production efficiency.

From the middle nineties of last century, some of the domestic factory apply the high-shear emulsification equipment in coatings production which apply mainly in liquid mix field in overseas to replace those national dispersing machine, sand mill machine and 3-roller machine. Those factories profess that it is the once and for ever solution for coatings productions. However, the following one by one bad market news relapse those factories into trouble. The main defect of this new machine is : as to high and middle grade coatings, this high-shear emulsifier could not reach the fine degree those factory request at all. As a company who process of 7 items of national high-shear technology, our company had also been disturb by this trouble. The fine degree defect is the reason why high-shear emulsifier could not dominate in the world coatings equipments market and could not been recognize by the international academe field. Therefore, almost all the high-shear manufacturer to mill it more by horizontal sand mill machine besides the high-shear emulsifier. This coatings making method puzzled those factories: the fine grade is settle still by those traditional sand mill machine, the hard clean, hard color-change and high remains problems are still on, the emulsifier’s price is many times than the traditional disperse machine, how can we call this “high-shear coatings making method” as the advanced one?

Above all, though the traditional coatings equipment have apply for years, it is limitation still obviously. The “high-shear coatings making method” is follow the “high-shear emulsifier plus sand mill machine method” in essential, it also could not solute the traditional equipment’s limitation.