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Cable Compounding Machine

GSmach is committed to providing advanced extruder for all kind of cable compounding


  • PE Insulation and Sheathing Compound
  • Crosslinkable PE (XLPE) Insulation Compounds
  • Silane XLPE for 10kV Cable
  • Peroxide XLPE for 35kV Cable
  • Peroxide/Silane Semiconductor Compounds
  • PVC Compounds for Cable
  • Halogen Free Flame Retardant (HFFR)
  • Projects / Clients
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What Twin Screw Extruder Machine You Need ?

GS mach which is a manufacturing vendor, specializing in the twin screw extruder pelletizing line and spare parts, with high quality machine and competitive price.

PE Insulation and Sheathing Compound

  • PE compounds are widely used in wires and cables for insulation and sheathing purposes. In fact, polyethylene compounds are among the most common forms of plastics. Polyethylene is a thermoplastic polymer consisting of long hydrocarbon chains of the base monomer (C2H4) and our PE compounds are generally based on polyethylene or co-polymers of polyethylene suitably modified to client specifications.
  • LDPE/LLDPE/MDPE/HDPE + color pigment/carbon black 2-5% + additives
  • Kneader + Conical Force Feeding + Single Screw Extruder + Water Ring Pelletizing
Cable Compounding machine
TypeScrew diameter (mm)KneaderOutput(kg/h)
  • Mixer + Twin Screw Extruder + Water Ring Pelletizing 
Mixer + Twin Screw Extruder + Water Ring Pelletizing
  •  Loss-in-weight Feeding + Twin Screw Extruder + Water Ring Pelletizing

Crosslinkable PE (XLPE) Insulation Compounds

  • Polyethylene has been and still is used as a cable insulant, but, as a thermoplastic material, its applications are limited by thermal constraints. Crosslinking improves the elevated-temperature properties of the base polymer. The effect of the cross-linking is to inhibit the movement of molecules with respect to each other under the stimulation of heat and this gives the improved stability at elevated temperatures compared with the thermoplastic materials. This permits higher operating temperatures, both for normal loading and under short-circuit conditions, so that an XLPE cable has a higher current rating than its equivalent PVC counterpart. XLPE has one of the best water resistance and low permeability capacities and abilities.

    Almost all cross-linkable polyethylene compounds (XLPE) for wire and cable applications are based on LDPE. XLPE-insulated cables have a rated maximum conductor temperature of 90 °C and an emergency rating up to 140 °C, depending on the standard used. They have a conductor short-circuit rating of 250 °C. XLPE has excellent dielectric properties, making it useful for medium voltage-10 to 50 kV AC, and high voltage cables-up to 380 kV AC-voltage, and several hundred kV DC.

XLPE 95 twin screw extruder underwater pelletizer system with Brabender brand loss-in-weight system
XLPE 95 twin screw extruder underwater pelletizer system with Brabender brand loss-in-weight system
  • There are two type XLPE:
    Silane XLPE for 10kV cable
    Peroxide XLPE for 35kV cable

  • Semiconductor Layer compatible with these two types of XLPE:
    Silane semiconductor
    Peroxide semiconductor
    All kind of semiconductor compounds can be produced by the same machine.

Silane XLPE for 10kV Cable

  • A material: LLDPE/LDPE 98% + DCP 0.1% + Silane 1.5% + Anti-oxidant

  • B material: LLDPE/LDPE 95.5% + DBTL 4% + Anti-oxidant 0.5%

  • Mix 95% of A and 5% B material for the XLPE Cable extrusion

  • ① For A material: loss-in-weight feeding and High torque extruder with long L/D.
    Need dryer and vacuum packing system.
    ② For B material: loss-in-weight feeding and Low torque extruder with 40 L/D.

Peroxide XLPE for 35kV Cable

  • LDPE + DCP+ Anti-oxidant

  • Loss-in-weight feeding.

  • The melt temperature should be controlled very well to avoid the DCP reacting with polymer. So, two stage extruders are more suitable for this kind of compounding.

  • The cooling water for pelletizing system should be clean without any positive and negative ions

  • This needs a dryer and vacuum packing system.

Peroxide/Silane Semiconductor Compounds

  • PE/EVA + carbon powder + DCP + Anti-oxidant

  • The same machine can be used for all types of semiconductors.

  • Kneader + conical force feeding +single screw extruder + air cooling die face pelletizing.

PVC Compound for Wire and Cable

  • Polyvinyl chloride is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. It is produced by polymerization of the vinyl chloride monomer (VCM) .

    PVC’s relatively low cost, biological and chemical resistance and workability have resulted in it being used for a wide variety of applications. Plasticized PVC is commonly used as insulation & sheathing on electrical cables.

  • PVC 60% + DOP 20% + Calcined Clay 10-20% + CaCO3 0-10% + Heating Stabilizer + Additives

Tandem Extruder for PVC Compounding:

  • The first stage is co-rotating parallel twin screw extruder for dispersion and distribution.
    The second stage is single screw extruder for cooling and pelletizing.

Tandem Extruder for PVC Compounding

Technical Specifications of Extruder:

TypeMotor PowerRotate SpeedOutput(kg/h)

Halogen Free Flame Retardant (HFFR)

  • Halogen free flame retardant (HFFR), low smoke zero halogen (LSOH), low smoke and fume (LSF) are all names associated with compounds that are used extensively in the cable insulation. These compounds are generally based on polyethylene or co-polymers of polyethylene with the addition of mineral fillers to impart flame retardant properties.

  • PE 10% + EVA 30% + ATH powder 55% + Additive 5%

  • Kneader + Conical Force Feeding + Twin Screw Extruder + Single Screw Extruder + Air Cooling Die Face Pelletizing

  • Loss-in-weight Feeding + Triple Screw Extruder + Single Screw Extruder + Air Cooling Die Face Pelletizing

Technical Specifications of Extruder:

TypeKneaderScrew Dia(mm)Output(kg/h)



TypePowerScrew Dia(mm)Output(kg/h)




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