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Highlighted Companies

  • Suzhou Rico Machinery Co., Ltd (China): RICO, a professional CNC machinery company, who integrated research, development and... http://www.ricocnc.com
  • A Hay & Grain Co Inc (USA): involved in international trade import export. At Anderson Hay we offer a wide variety of feed... http://www.anderson-hay.com/


  • Dual Stage Extrusion Line - China

    price: contact company for price

    By either single screw extruder or twin screw extruder the process goes

    in this sequence: solid conveying, melting, compounding, degassing and

    extruding. Normally, each step requires different screw structure,

    different operating conditions, such as RPM, barrel heating temperature,

    material pressure, etc. But as a matter of fact, all these steps perform

    through the same screw shaft. That is, the rotary speed of screw is same

    and the temperatures will influence on each step. All these affect the

    pressure build-up and energy input which are so far not possible to be

    realized for every inpidual step.

    For instance, in order to increase the output of single screw extruder, in conveying part, we would use the screw structure like this: deeper groove depth, longer screw distance, higher RPM, lower die pressure and lower extruding temperature. But higher RPM means faster conveying speed and this would make a negative effect on melting. Sometimes for better mixing, we would use kneading elements which can provide better compounding as well as higher temperature. If the material being processed is heat-sensitive, this kneading element may get it degraded. The same problem would happen on a twin screw extruder.


    Company Contact:


    • Phone: 13813842859

    • Address: Lishui Econmic Development Zone,Najnjing,China, Nanjing, China

    • Email: Email


    Published date: June 20, 2013 -

    • Business Description: involved in international trade import export of goods, products, and services

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