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SKW Series Four-Flight Co-kneader Compounding System

Four-flight Compounding System

Based on 3-flgiht compounding design, XINDA develops latest new technology with 4 flights. The XINDA SKW Kneader each spiral is broken by four gaps per revolution to locate the kneading flights. Four rows of kneading pins, which are individually inserted in the barrel per 90 degree, are intermeshed with these flights. With the same L/D ratio, it achieves more mixing, but less friction heat. The reciprocating wobble-box synchronizes the shaft rotation and oscillation so that each revolution of the screw is accompanied by one full stroke forward and backwards. This ensures optimal distributive and dispersive mixing with minimal energy consumption.

Advantage of XINDA Co-kneader

Lower energy input, lower melt temperatures

Extremely homogeneous mixing, no shear spikes, equal treatment of polymer matrix

High degree of self-wiping and have no dead spot

Dispersive mixing without destroying delicate fillers

High volumetric loadings of fillers and additives

Efficient blending of liquid components

Broad application for compounding without changing hardware

Axially opened split barrel guarantees ease of cleaning and fast maintenance

Replacement parts, such as screws, barrel lining and pins can be changed individually


XINDA SKW Co-kneader: Higher speed, Bigger capacity, Better mixing, Lower energy consumption


Application

Cable Compounds:                            Masterbatches

  • HFFR                                       High concentrated color MB
  • XLPE                                        Black and white MB         
  • Semi-conductive insulating        High loaded filler MB
  • Black sheathing                        PET/PP/PA fiber MB
  • Metal injection molding

SKW Serial Four-flight Co-kneader

Model

 SKW-85

 SKW-105

 SKW-125

Co-kneader Screw Dia.

 85mm

 105mm

 125mm

L/D Ratio

 15-22

 15-22

 15-22

Max. Screw Speed

 600 RPM

600 RPM

600 RPM

Main Motor Power

110-160 KW

200-280 KW

350-450 KW

Second-stage Screw Dia.

150mm

180mm

220mm

Second-stage Screw L/D

 7

 7

 7

Max. Screw Speed

 60 RPM

60 RPM

60 RPM

Second-stage Motor Power

55 KW

75 KW

110 KW


Reference Output (KG/HOUR)

 SKW-85

 SKW-105

 SKW-125

HFFR Cable Compounds

200-400

500-800

800-1500

Black sheathing

200-400

500-800

800-1500

Semi-conductive Insulating Compounds

200-400

500-800

800-1500

Silane XLPE Cable Compounds

200-400

500-800

800-1500

High Concentrated Color MB

150-350

400-700

700-1200

Carbon Black MB

150-350

400-700

700-1200

High Loaded Filler MB

200-400

600-1000

900-1600

Fiber MB

150-350

400-700

700-1200


SKW