NANJING LESUN SCREW CO.,LTD

The Cleaning Methods of Extruder Screw

The extruder screw needs to be cleaned under normal conditions such as changing the color or turning on the machine after shutting down, with black spots.


Ⅰ. What are the cleaning methods of extruder screw?


There are two common methods: one is to wash with raw materials or nozzle materials, and the other is to directly pull the screw for polishing and cleaning.


The method of drawing the screw affects the precision of the equipment. Pulling the screw for a long time affects the fit between the accessories. Polishing the screw also affects the surface smoothness of the screw. It is easier to leave resin in the subsequent production, resulting in material decomposition and carbon deposits.


However, washing the extruder screw with raw materials takes a long time and requires a lot of cleaning materials, which will inevitably affect the efficiency of production.


Ⅱ. What method is more effective for cleaning the extruder screw?


The following solutions are recommended:


1. For color change: Use professional screw cleaning materials to clean through the machine, which can save time and the amount of cleaning materials, especially for color patterns, weld lines, etc.


2. Aiming at the problem of black spots during shutdown: We recommend using a screw cleaning material that is not easy to carbonize to stay in the screw during shutdown, fill the screw, and replace it with raw materials when starting up. The advantage of this is to fully replace the original material. To avoid carbonization of the material in the screw, and at the same time, it can also bring out the original impurities in the screw. This cleaning material is called shutdown maintenance material.

  • Segmentation of Screw Element Assemblies and Their Functions

    Segmentation of Screw Element Assemblies and Their Functions

    January 15, 20211. The selection of screw elements in each section is different.The screw combination is generally divided into five parts, conveying section, melting section, mixing section, exhaust section, and hom...view
  • What Are the Commonly Used Screws?

    What Are the Commonly Used Screws?

    May 26, 2022Usually screw elements can be divided into ordinary type, gradual type, mutation type, mixing type, separation type, split type and various barrier type, pin type, DIS split type and exhaust type, etc...view
  • Precautions and Working Process of Extruder Barrel

    Precautions and Working Process of Extruder Barrel

    September 26, 20211. Precautions for the extruder barrel1. After the extruder barrel heats up, remove the nozzle, the head coupling body of the extruder barrel, and take out the extruder screw. Brush the inner wall of ...view
  • How to Prevent the Dual-alloy Screw from Slipping?

    How to Prevent the Dual-alloy Screw from Slipping?

    November 5, 2021When the bi-alloy extruder screw is difficult to press at the feeding port, or the adhesive force along the length of the extruder barrel cannot be formed to convey the material, the screw of the bi-a...view
top Inquiry