Introduction & Application of Our PRE Series Planetary Roller Extruder
The "PRE" series planetary roller extruder combines rolling and extrusion in a unique configuration where a planetary screw is inter-engaged at the center of a main screw and barrel, which are shaped like helical gears at 45°. The planetary screw rotates around its axis, enabling efficient processing of various resins.
This extruder offers multiple applications, replacing banbury mixers or open mills for sheeting and filming, and is ideal for high-capacity pelletizing with a capacity up to 2000kg/h.
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Due to the inter-engagement space, the extruder can plasticize resin at low temperatures, ensuring better material properties. Through the inter-meshing action of the toothed planetary system, one revolution of the main spindle can roll the plastic melt up to 1,100 times, guaranteeing optimal plastification, homogenization, and dispersion.
The PRE series is a low-temperature forming extruder that maintains material properties due to its efficient heat distribution and homogenization process.
The combined rolling and extruding action ensures excellent mixing and quality. Compared to other designs, this system increases the contact surface of the melt by up to five times, improving efficiency and reducing energy consumption.
Low-cost formulation is possible due to the large contact surfaces and short residence time, minimizing the need for expensive stabilizers and lubricants.
Self-cleaning features ensure minimal residue between color changes, producing no more than 5kg of scrap, making it ideal for frequent product changes.
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Why Choose Lanhang?
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1. Over 20 years of professional experience since 1992
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2. Overseas service centers available in Europe, Japan, Dubai, etc.
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3. International certifications including CE, SGS, IAF, and CNAS
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4. Recognized as a national high-tech enterprise
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5. Holds numerous national invention patents for rubber and plastic machinery
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6. ISO9001:2008 certified management system
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Product 1:
Item\Model |
PRE125 |
PRE 150 |
PRE 170 |
PRE 190 |
PRE220 |
PRE 255 |
Main motor power(kw) |
55 |
75 |
90 |
132 |
200 |
250 |
Speed of the main screw(rpm) |
60 |
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Stuffy power(kw) |
0.75 |
0.75 |
1.5 |
11 |
11 |
11 |
Product 2:
 Double stage extruder:
The first compounding extruder runs at a high speed for good mixing and high output. The second extruder must be a larger diameter single screw one that can run at lower speeds. This helps avoid overheating through internal cooling and strong heat exchange. The functional separation allows operators to control the mixing process and temperature more flexibly.
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Model No. |
 Item |
 Screw Diameter       (mm) |
 Motor Power      (kw) |
PRE-150/200 |
PRE-150 planetary screw extruder |
      150 |
   75 |
SJ-200 single screw extruder |
      200 |
   75 |
|
PRE-180/220 |
PRE-180 planetary screw extruder |
    180 |
   132 |
SJ-220 single screw extruder |
    220 |
   90 |
|
PRE-220/250 |
PRE-220 planetary screw extruder |
    220 |
   185 |
SJ-250 single screw extruder |
    250 |
   110 |
|
PRE-255/300 |
PRE-255 planetary screw extruder |
    255 |
   240 |
SJ-300 single screw extruder |
    300 |
   132 Â
|


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Support Frame/Bracket,Alu Profile Support Plate,Aluminium Support Plate,Aluminum Support Plate, aluminum bracket
Jiangsu Yuejia Metallic Technology Co.,Ltd , https://www.yuejiametal.com