Plastik Peletlerdeki Siyah Nokta Sorunu Nasıl Çözülür?

Plastik granülasyon sürecinde, peletlerde siyah noktalarla karşılaşmak nispeten yaygın bir sorundur. Bu durumun nedeni plastik ekstrüder makinesiyle mi, ham maddelerle mi yoksa başka faktörlerle mi ilgilidir? Aslında, granülasyon sürecindeki siyah nokta sorunu yaygın bir arıza durumudur, özellikle açık renkli peletlerde daha belirgindir. Peki bu sorunu nasıl iyileştirebiliriz?

Bu siyah noktalar, plastik pelet makinesinin karbürden sonra kalan plastik termal bozulmasıdır; plastik peletlerin kalitesini sağlamak için personelin sık sık makine karbürünü temizlemesi gerekir.

Use harder plastic or its return material and white mineral oil for cleaning, and the temperature should be appropriately increased by 10~15°C.

At this time, the plasticizing ability of the small extruder should be considered. For large and medium-sized extruders that can plasticize ultra-high molecular weight plastics, they can be cleaned with ultra-high molecular weight plastics or their return materials and white mineral oil.

Because the hardness of ultra-high molecular weight plastics is better, and when the temperature is high, the cleaning object will be softened, so that it becomes easy to fall off, which is beneficial to the carbides being carried out by the plastic melt.

During the cleaning process, the speed of the plastic pellet machine can be repeatedly switched between low speed and high speed. If there is still a spare motor load, you can repeatedly stop and restart the extruder several times during the operation, which can improve the cleaning effect.

When the carbide in the plastic melt is obviously reduced, gradually adjust to the appropriate temperature, then the normal production.