Advantages And Disadvantages Of Twin Screw Extruder

Compared with the single-screw extruder, the twin-screw extruder has many advantages in reducing production costs and increasing production power during production. The details are as follows.

Reduce production cost: When making masterbatch, it is usually required to change the color. If it is necessary to change the product, the open processing area can be opened in just a few minutes, and the melt profile on the overall screw can be investigated. To analyze the mixing process.

At present, the common twin-screw extruder needs a lot of cleaning materials to clean the machine when changing the color, which is time-consuming, wastes power, and wastes raw and auxiliary materials. The split twin-screw extruder can solve this problem well. When changing the color, it only takes a few minutes to quickly turn over the barrel.

Manual cleaning is carried out. In this way, cleaning materials can be eliminated or used less, and the cost can be reasonably saved.

Increase production power: In equipment maintenance, the common twin-screw extruder usually has to remove the heating and cooling systems first, and then extract all the screws, which is time-consuming and labor-intensive. The split twin-screw extruder does not require these cumbersome steps. Just loosen a few bolts, roll the worm gear box handle device and lift the upper part of the barrel to open the whole barrel, and then perform maintenance. In this way, the maintenance time is reduced, and the labor intensity is greatly reduced.

Wear condition: The twin-screw extruder is easy to open, so you can find the wear degree of the threaded element and the inner liner of the barrel at any time, and then carry out reasonable maintenance or replacement. It will not be discovered when the extruded product is in a state, so as to avoid unnecessary waste.

High torque and high speed: At present, the development trend of twin screw extruders in the world is toward high torque, high speed, and low energy consumption. The effect of high speed is high productivity. The split twin-screw extruder belongs to this field, and its speed can reach 500 rpm. Therefore, it has common advantages in processing high-viscosity, heat-sensitive materials.

In addition, the twin-screw extruder also has the advantages of a wide range of applications and can be applied to the processing and production of a variety of materials.

However, the twin-screw extruder also has some imperfections, which are currently reflected in the following aspects: the condition of the high discharge rate bearing device has not been solved; in the meshing zone, especially in the shrinking section, the barrel and the screw edge The wear is severe; the processing cost of the screw and the barrel of the intermeshing conical twin-screw extruder is relatively high; the heat generated by the material in the barrel is small, and most of the heat must be introduced from the heater outside the barrel.