Twin screw extruder for WPC floor profile making machine

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, extrusion stability and other characteristics, it has been widely used in the production of extruded products. Forming processing.

The Twin screw extruder consists of several parts such as a transmission device, a feeding device, a barrel and a screw. The functions of each component are similar to those of a single-screw extruder. The difference from a single-screw extruder is that in a twin-screw extruder, there are two parallel screws placed in the “∞”-shaped cross-section material.

Advantages of Twin screw extruder 

• Wear
  Because it is easy to open, the wear degree of the threaded components and the inner bushing of the barrel can be found at any time, so that effective repair or replacement can be carried out. This prevents unnecessary waste from being discovered only when problems occur with the extruded product.
• reduce manufacturing cost
  When manufacturing masterbatch, it is often necessary to change the color. If it is necessary to change the product, open the open processing area within a few minutes. In addition, the mixing process can be analyzed by observing the melt profile on the entire screw. When changing the color of an ordinary twin-screw extruder, a large amount of cleaning materials are needed to clean the machine, which is time-consuming, energy-consuming, and a waste of raw materials. The split twin-screw extruder can solve this problem. When changing colors, it only takes a few minutes to quickly open the barrel and perform manual cleaning. This way, no or less cleaning materials can be used, saving costs.
• Improve labor efficiency
  During equipment maintenance, ordinary twin-screw extruders often need to remove the heating and cooling systems first, and then pull out the screw as a whole. The split twin-screw is not needed. Just loosen a few bolts, turn the worm gear box handle device and lift the upper part of the barrel to open the entire barrel for maintenance. This not only shortens the maintenance time, but also reduces the labor intensity.
• High torque, high speed
  The development trend of twin-screw extruders in the world is towards 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 500 rpm. Therefore, it has unique advantages in processing high-viscosity and heat-sensitive materials.
  Regarding the core technologies of high speed and high torque, only relevant German and Japanese manufacturers have mastered the core technology of asymmetric and symmetric high-torque gearboxes, and their maximum speed can reach more than 1,800 rpm. However, only domestic manufacturers that master this core technology have mastered the core technology. Sichuan Zhongzhuang Technology Co., Ltd. is also one of the main choices for domestic high-end material processing manufacturers. It is a domestic independent innovation national encouragement project.
• Wide range of applications
  Wide range of applications, suitable for processing a variety of materials
• High output, high quality
  It has other advantages of ordinary twin-screw extruders and can achieve high output, high quality and high efficiency.

Application examples of  Twin screw extruder

1. Glass fiber reinforcement and fuel retardant granulation (such as: PA6, PA66, PET, PBT, PP. PC reinforced flame retardant, etc.)
2. High filler granulation (such as: PE, PP filled with 75% CaCO.)
3. Granulation of heat-sensitive materials (such as PVC, XLPE cable materials)
4. Concentrated color masterbatch (such as: filled with 50% color powder)
5. Anti-static masterbatch, alloy, coloring, low-fill blending and granulation
6. Cable material granulation (such as sheathing material, insulation material)
7. XLPE pipe material granulation (such as: masterbatch for hot water cross-linking)
8. Thermosetting plastic mixing and extrusion (such as: phenolic resin, epoxy resin, powder coating)
9. Hot melt adhesive, PU reaction extrusion granulation (such as: EVA hot melt adhesive, polyurethane)
10. K resin and SBS devolatilization and granulation

Main model of  Twin screw extruder :

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