Chalkboard Making Plant

Abstract

TIle technology introduced here is related to a special process in which chalkboards are coated with oil-mixed paint in the course of manufacture contrary to the prior art, whereas in schools and offices, most of the chalkboards are currently coated with gelatinemixed paint. However, such a chalkboard is very susceptible to moisture, and when its surface is moistened, it is discolored or deteriorated, and to make the matter worse, the chalkboard is weak in durability and short in service life to the extent of causing cracks on the surface if touched by other objects, because the coated surface is not substantial enough.