Plastic pelletizing extruder is used to heat, compress and melt waste plastics and then pass them through the extruder head to shape them into plastic pellets. However, sometimes the production process may encounter the problem of plastic strip breakage, which affects the production efficiency and product quality. In this article, we will discuss the causes of broken strips in PE granulating machine and provide corresponding countermeasures.
Plastic pelletizing extruder broken strip problem causes
- Improper temperature control: Plastic pelletizing extruder require precise control of the heating temperature to ensure that the plastic can be fully melted and extruded smoothly. If the temperature is not set correctly, the plastic will not melt sufficiently, resulting in broken bars.
- Extruder head problems: The extruder head is one of the most critical components in a plastic pelletizing extruder. If the head is not properly designed or damaged, it will easily cause the plastic strip to break.
- Extrusion pressure is too high or too low: The extrusion screw inside the plastic pelletizing extruder exerts a certain pressure to push the plastic forward and form pellets through the extrusion outlet. The extrusion pressure of the plastic pelletizing extruder needs to be properly adjusted, too large or too small may lead to instability of the plastic particles, and then the phenomenon of broken strips.
- Abnormal cooling water temperature: After extrusion, the plastic needs to be rapidly cooled by cooling water to solidify into pellets. If the cooling water temperature is abnormal or the water supply is unstable, it will cause uneven or broken plastic pellets.
- Worn screws: Prolonged operation and high-temperature environments may cause wear and tear on the screws of PE granulating machine, reducing their extrusion efficiency. A worn screw may not be able to push the plastic efficiently, causing the plastic to break in strips.
Solutions for broken strips in plastic pelletizing extruder
- Accurately control the temperature: Regularly check the heating system of the machine to make plastic pellets, ensure the accuracy of the temperature sensor, adjust the temperature to the appropriate range, and avoid too high or too low temperature causing broken strips.
- Check the extruder head: Regularly check the wear and tear of the extruder head, replace it in time if any abnormality is found, and make sure the head is well-designed to avoid plastic granules being blocked in the extrusion process.
- Adjust the extrusion pressure appropriately: Adjust the extruder’s extrusion pressure according to the characteristics of the plastic and the production situation to ensure the stable extrusion of plastic granules.
- Optimize the cooling system: Make sure the cooling water temperature is stable and the water flow is sufficient, adjust the cooling system appropriately to ensure that the plastic granules are cooled and cured quickly to prevent the problem of broken bars.
- Regularly check and replace the screw: Regularly check the wear degree of the screw and replace the screw with serious wear in time to ensure the extrusion efficiency and product quality. In addition, choosing good quality screws is also an effective measure to prevent screw wear.
Shuliy plastic granulator for sale
Shuliy is a professional manufacturer of plastic pelletizing extruder. Its machine to make plastic pellets are manufactured using advanced technology and high-quality materials to avoid the problem of strip breakage. The plastic pellets produced are of excellent quality and meet the needs of customers.
If interested, please feel free to contact us to get more detailed information about plastic pelletizing machine price, parameters and other details of the plastic pelletizing machine.
