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about the extruder

Xinda Reciprocating Single Screw Compounding Extruder

The performance of single and twin-screw extruders, which dominate the extrusion industry, has been unable to meet the requirements of compounding, filling, strengthening, toughening, and other modifications. To meet the production process requirements, it has gradually become a trend to use reciprocating single-screw compounding extruders to produce some high-tech and high-value-added products.

The reciprocating single-screw intensive extruder has the characteristics of uniform shearing, high dispersion, high filling, stretching melt, etc., and combines the advantages of single and twin-screw extruders. The unique working principle, coupled with a complete set of threaded components and supporting equipment, makes it more widely used. On one machine, mixing, mixing, plasticizing, dispersing, shearing, stretching, degassing and granulation can be achieved. The interfacial area that allows the melt to flow in the machine is much larger than general shear flow.

Product Quality Index

Energy Generation

Three Flights Plastic Co Kneader SJW (C) Series

Model SJW-45(M) SJW-70(M) SJW-100(M) SJW-140(M) SJW-200
Screw Diameter(MM) 45 70 100 140 200
L/D 15-25 15-25 15-25 15-25 20-25
Main Motor Power(KW) 15-30 55-75 90-132 160-220 250-280
Max.Screw Speed(RPM) 500 500 500 500 500
Reference Output: KG/HOUR 10-50 100-200 150-300 600-1000 1000-2000

Four Flights Plastic Co Kneader SKW & WKS Series

Model SKW-105 SKW-125 SKW-140 WKS-120
Screw Dia.(MM) 105 125 140 120
L/D 15-22 15-22 15-22 9-15
Main Motor Power(KW) 200-280 350-450 550-650 250-280
Max.Screw Speed(RPM) 500 500 500 500
Second-stage Screw dia.(MM) 180 220 280 220
Second-stage L/D 7 7 7 7-8
Second-stage Power(KW) 75 110 132 90-132
Reference Output:kg/h 500-800 800-1500 1600-2000 1800-2500

Application

We provide our machinery users with consistent high productivity and product quality and the maximum cost effectiveness with XINDA technology. The XINDA twin screw (P)SHJ series is ideal for precise compounding of polyolefins,engineered plastics and other continuous processes.

color masterbatch

Color & Filler Masterbatch

White MB
Black MB
Color MB
Filler MB
Additive MB

biodegradable plastics

PVC Pelletizing Compounds

PVC Shoe Sole
PVC Pipe
PVC Sheet
PVC Flooring
PVC Wig

enineering plastics

Cable & Wire Compounds

PVC Cable
PEX Cable
HFFR Cable
XLPE Cable
Semi-Conductive Cable

functional masterbatch

Engineering Plastics Compounds

PA Compounds
PC Compounds
PET Compounds
PBT Compounds
POM Compounds

powder coating

Biodegradable Plastics Compounds

PLA
PBS
PBAT
PLA + Starch
PBAT + Starch

color masterbatch

Thermosetting Plastics Compounds

BMC
EMC
Urea
Phenolic
Melamine

tpu tpe tpr

Rubber & Elastomer Compounds

Rubber
TPE Compounds
TPU Compounds
TPO Compounds
SEBS Compounds

color masterbatch

Pharma & Special Compounds

Magnetic
PET Food
Vegan Meat
Wood Composite

Xinda 3D simulation of Co Kneader, plastic extruder

It shows the complete whole production line for different types of plastic compounds. A gravity feeding system, compounding extruder with solid and liquid feeding, eccentric water ring cutting, and drying system are used. All the lines have oil heating and cooling, accurate temperature control, and two cooling shafts. 

We’re In Business

28+ years

Completed Successfully

2800+ projects

Features and advantages:

The extruder’s screw shaft is designed with unique modular screw blocks, allowing the screw to perform a reciprocating motion while rotating. This special movement, combined with the mixing blocks and the kneading pins on the barrel liner, enables the material to be mixed both radially and axially, enhancing the mixing effect.

mild shear
temperature control
opened barrel
effective injection
  • Design Flexibility: The unique reciprocating single screw and multi-tooth barrel design offer the advantages of both single and twin screw extruders, making it highly adaptable for processing, modifying, and granulating various plastics.

  • Short Material Residence Time: With the shortest aspect ratio, materials have a short and controllable residence time, reducing thermal degradation and ensuring high dispersibility with low energy consumption and minimal use of pigments and additives.

  • Effective Mixing: The system’s reciprocating motion allows for complete mixing, plasticizing, dispersing, homogenizing, and degassing in a single production cycle.

  • Efficient Degassing: The vacuum device effectively removes moisture and volatile gases, making it ideal for processing semiconductors, conductive materials, and cable materials.

  • Precise Temperature Control: Accurate and stable temperature control with minimal temperature difference is ideal for processing heat-sensitive and shear-sensitive materials.

  • Easy Maintenance: The split barrel and segmented screw design facilitate quick and safe disassembly, cleaning, and repair, while low internal friction ensures stable, low-noise operation.

  • Cost-Effective Operation: Equipped with semi-automatic and automatic screen-changing devices, the system reduces labor intensity, raw material consumption, and production costs.

Polypropylene Compounds for 110kV Cable

WANMA insulation material for 110kV cable, produced by XINDA Co-Kneader.

The Structure and Applications of Co Kneader

Using co kneader to produce high-tech, high-value-added products is becoming a trend.

Hungarian customer test SKW-140 Co Kneader Extruder 

The customer tested the SKW-140  Co Kneader Extruder for HFFR and PVC cable compounds. 

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