There are many key reasons for the black spots of plastic plastic granulator products:

There are many cases where black spots are likely to occur, including in the filler, in the raw material, and not in the raw material filler, but after carbonization in the extruder screw: external dust will also appear; carbon powder will be dispersed Unevenness can also cause black spots, so the actual problems should be analyzed in depth! In the specific production and manufacturing of plastic products, the feed inlet is generally protected before the shutdown, the plastic melt in the extruder and the engine is removed, the temperature of each zone is turned off, and the power is turned off.

For large, medium and small extruders that can melt plastic content, the plastic content or its recycled materials can be added with white mineral oil to remove it. Because the content of plastic is good, and when the temperature is higher, the removal target will be softened, so that it will fall more and more easily, which is beneficial for the cementite to be carried out by the plastic melt. In the whole process of cleaning, the speed ratio of the extruder is continuously changed several times between low speed gear and fast speed. If the motor load also has capacity, the extruder can be stopped and restarted several times during the operation process, which is convenient for further improvement and clearing the expected effect. When the cementite (black spots) in the solution is significantly reduced, the plastic used in the flat is removed and cleaned until the end is clean, and the temperature is slowly adjusted to a suitable temperature, and then all normal production and manufacturing can be done.