Advantages of laboratory small split twin-screw mixing extruder
The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, and extrusion stability, it has been widely used in the production of extruded products.
Forming processing. The twin-screw extruderis composed of several parts such as a transmission device, a feeding device, a barrel and a screw. The functions of each part are similar to those of a single-screw extruder. In the extruder, there are two parallel screws placed in the "∞" cross section of the material.
The advantages of laboratory small split twin-screw are particularly prominent, mainly in the following points:
1. It is convenient to observe the wear condition
Because it is easy to open, the wear degree of the threaded elements and the inner liner of the machine barrel can be found at any time, so as to carry out effective maintenance or replacement. It will not be discovered when there is a problem with the extruded product, causing unnecessary waste.
2. Effectively reduce production costs
When manufacturing masterbatches, it is often necessary to change the color. If a product change is necessary, the open processing area is opened within a few minutes. In addition, the mixing process can be analyzed by observing the melt profile on the entire screw. Ordinary twin-screw extruders need to use a large amount of cleaning material to clean the machine when changing the color, which is time-consuming, power-consuming, and wastes raw materials. The split twin-screw extruder can solve this problem. When changing the color, it only takes a few minutes to quickly open the barrel for manual cleaning, so that no or less cleaning materials are used, which saves costs.
3. Significantly improve labor efficiency
During equipment maintenance, the common twin-screw extruder often needs to remove the heating and cooling system first, and then pull out the screw as a whole. The split twin-screw is not used, as long as a few bolts are loosened, the handle device of the worm gear box is turned to lift the upper half of the barrel to open the whole barrel for maintenance. This not only shortens the maintenance time, but also reduces the labor intensity.
4. High torque, high speed
The development trend of twin-screw extruders in the world is to develop in the direction of high torque, high speed, and low energy consumption. The effect of high speed is high productivity. The split twin-screw extruder belongs to this category, and its speed can reach plus 500 rpm. Therefore, it has unique advantages in processing high-viscosity and heat-sensitive materials.
The Lab twin-screw extruder and Lab multi-screw extrusion granulators produced by Guangzhou POTOP have unique advantages on the basis of the above advantages.
The small precision twin-screw mixing extrusion granulation experimental line is composed of a small precision twin-screw mixing extruder, an air-cooled belt and a small precision granulator. The small precision twin-screw mixing extruder adopts a split barrel and parallel meshing co-rotating twin-screw structure, which can recombine the threaded elements according to the characteristics of the material, realize the mixing of materials with different characteristics, and improve the mixing and mixing effect. It is mainly used for filling, blending, modifying, adding, chlorinating, processing of polypropylene and superabsorbent resins of rubber, plastic and engineering resins.
