Why control the thickness of the coating?

Film thickness coating, can be formed at one time, can also be formed many times. Practical experience shows that most coatings to each thin coating, painting many times is appropriate. The film formed by painting many times is better than the film performance of the same Film thickness formed by painting at one time. This is because the thin coating drying conditions are good, the internal stress during dry operation is small, and the adhesion is good. When the coating is too thick, it is not only hand-operated. The internal stress is large, and it is prone to wrinkling and Miscellaneous morbidity.

In fact, except for polyester paint, it is impossible for the rest of the coating to be coated with a very thick coating at one time. For example, if the brush is too thick, it is easy to wrinkling, and the vertical surface is easy to sag; when lame plating, because the recruitment is very fine, it is impossible to spray thickly at one time; when roller painting, if the coating is too thick, Coating is easily pressed out of the edge of the plate by the painting roller; and so on.

Paint coating Film thickness is divided into the following reference Film thickness:

(1) The general coating is 30~ 40 emblem rice.

(2) The decorative coating is 35 to 45 microns.

(3) The protective coating is 125 to 130 microns.

(4) wear resistance coating is 130~ 150 microns.

(5) The thick coating of high percent solids is 700~ 1000 microns.