The cooling of the plastic granulator is reasonable. Because of the simultaneous cooling of air and water, the material can be crushed at a proper temperature.
The particle size distribution of the comminuted material is reasonable. The second stage comminution is used to comminute the coarse and fine materials under different cutting tools and gaps, so the particle size distribution tends to be reasonable, which improves the flow uniformity of the plastic granulator in the fluidized bed and reduces the dust consumption in the coating process.