The temperature of PP pelletizing machine is usually about 200 degrees, but it is necessary to avoid the addition of fifiles and add others; the temperature of the lower material is about 200 degrees, the three-segment temperature 210, 215, 205 of the screw center; the die temperature of 180 to 200. The feed temperature is too high, and the temperature of the screw has a smaller role. It is too high coloring. PP pelletizing machine is too low to increase the mixture of the granulator to the granulator. The die temperature is only maintained at constant temperature, too high and too low to the discharge pulley is not very smooth.

The key to the heating temperature is the softening point or melting temperature of the carrier resin, and should generally be higher than about 5 ° C of the resin. The heating temperature is too low to completely melting, the limited carrier resin cannot be completely coated with the inorganic powder, and the surface rough particles of the mother particles have holes, resins and inorganic powders cannot be uniform. The heating temperature is too high, the aid is easy to volatile, and the screw shear reduction is not suitable for plasticization, which will affect the quality of the masterbatch.

First, PP pelletizing machine’s tips

1. Listen to sound: The fast and temperature changes in the feed speed, the sound of the robot has a big difference. This requires constant exploration in the work, to allow the machine to maintain the optimal sound state as much as possible.

2. Watch: I will see the special key from the pp pelletizing machine’s head because this is the first key to finding the reason. If there is a raw material, then the temperature is too low, and pp pelleting machine must be warmed; with coke, the temperature is too high, and the temperature is required.

3. See the gloss and density of the particles: poor plasticization, particle loose, and no gloss of surface is due to improper granulation temperature and cooling water temperature control.

Under normal circumstances, the temperature of the second zone should be the highest temperature of the granulation, one district is 10 ° C above the second zone, the three districts, the temperature is basically consistent with the second area, starting from the five districts until the head is 5 ~ 10 ° C The gradient slowly decreased.

Therefore, after the formulation of the parental particles is determined, the plastic pelletizing process is a key factor in determining the quality of the masterbatch quality.