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Different advantages of double screw extruder

Aug 13,2018

The objective of extrusion processing is the continuous physical-chemical transformation of viscous polymers and the production of high quality structured products, thanks to the precise control of the processing conditions.

The double screw extruders are composed of two screwed assemblies, coupled and co-rotating, mounted on fluted shafts located inside a closed barrel. Due to the wide range of barrel and screw designs, various screw profiles and process functions can be adapted taking into account the requirements of each process.

Thus, the double screw extruders can carry out the following processes: transport, compression, mixing, cooking, shearing, heating, cooling, pumping, molding, etc. with high levels of flexibility. The main advantage of the extruders of double screw reticulated and co-rotary is its remarkable mixing capacity, which confers exceptional characteristics to the extruded products and gives a significant value to the processing units.

In the processes by extrusion of double screw, the raw materials can be solid (powders, granulates, flours), liquids, suspensions, and possibly gases. The final products are plastic composite, chemically customized polymers, textured foods and food products, fiber pulps, etc.




Over time, double screw extruder has become the main standard for many industries, because it offers innumerable advantages compared to the extrusion of a single screw:

- Greater consistency in production, and control of product quality.
- Greater flexibility, with capacity to produce a wide range of raw materials.
- From simple and easy maintenance, they allow to save energy and water.
- For easy cleaning thanks to the design CIP (cleaning in place).
- Increase in productivity thanks to continuous processing, fast start-up and detention between phases of product transformation, fast conversion and advanced automation.
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