ZSK Twin Screw Extruders

Kombiplast KP Two-Stage Compounder

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Coperion's two-stage compounding system Kombiplast KP

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Kombiplast KP for compounding and pelletizing of PVC, cable and special compounds

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Kombiplast KP with twin scew extruder ZSK and single screw discharge ES-A

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Single discharge screw ES-A of Coperion's Kombiplast KP

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Transition chute of Coperion's Kombiplast KP

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Start-up chute of Coperion's Kombiplast KP

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Die plate of Coperion eccentric pelletizer EGR

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Compounding and pelletizing of PVC, cable and special compounds

PVC, cable and special compounds can only be processed economically with a reliable compounding and pelletizing technology. The Kombiplast from Coperion meets this demand in all respects. Coperion designed the compounding system especially for the production of temperature and shear-sensitive plastics – so that you can benefit from highest product quality, maximum economy and flexibility.

The Kombiplast KP combines a twin screw extruder ZSK with a single-screw discharge screw ES-A for gentle pressure build-up of shear-sensitive products.

Coperion specializes in the designing and building of complete turnkey plants for the compounding and pelletizing of PVC, cable and special compounds. Coperion's two-stage compounding systems Kombiplast KP are equipped with volumetric feeders, vacuum degassing and a pelletizer.

Key benefits of the Kombiplast KP

Excellent feeding characteristics, even with poorly flowing powders and hot premixes from the high-speed mixer
Good homogenization and controlled shearing at uniform product stress
Short residence time and defined narrow residence time distribution
Exact temperature control
Efficient removal of volatile matter
Gentle product treatment, especially in the pressure build-up zone before the die plate
Uniform product flow through the die plate
Low specific energy requirement
Wide range of applications
Easy adaptation to new requirements
Fast, convenient cleaning possibility
High availability
Cost-effective maintenance
Maintenance-friendly machine set-up

Related Industries

Plastics

Typical areas of application of the Kombiplast

Plasticized PVC

PVC cable: insulation, sheathing, and filled compounds
Shoe and shoe sole material (also PVC-P with blowing agent)
Extrusion materials for profiles and hoses (including medical applications)
Injection molding compounds
Film and sheets for flooring

Rigid PVC

Extruded profiles for interior and exterior uses
Injection molding grades for fittings, etc.
Blow molding grades such as bottles, containers, etc.
Alloys and blends
Films (calender feeding)

Special compounds

Halogen-free, self-extinguishing formulations for cable (HFFR)
Compounds for elastomer-based low, medium, and high tension cable
Peroxide cross linkable PE
Silane cross linkable flame retardant compounds

Principle of the Kombiplast KP

Coperiontwo-stage-extruder Kombiplast principle

Twin-screw side feeder ZS-B
Twin-screw compounder ZSK
Single-discharge screw ES-A
Eccentric pelletizer EGR
Degassing
Vacuum degassing

Kombiplast PVC/HFFR hybrid

The Kombiplast PVC/HFFR hybrid systems are a special version of the Kombiplast. These enable PVC pellets or halogen-free, flame-retardant (HFFR) compounds to be produced economically for the cable industry.

Only a few changes to the Kombiplast PVC/HFFR hybrid are necessary to change products from PVC to HFFR or vice versa. The change can be made within 2 hours depending on the equipment in the plant and the machine size.

Technical data of the Kombiplast with ZSK Mv¹⁴ and ZSK Mc¹⁸

Kombiplast with ZSK Mv¹⁴
Kombiplast with ZSK Mc¹⁸

Kombiplast ZSK/ES-A	Max. screw speed [min⁻¹]	Screw diameter [mm]
KP 27 Mv¹⁴ / 60	600/115	27/60
KP 34 Mv¹⁴ / 100	600/100	34/100
KP 43 Mv¹⁴ / 150	600/75	43/150
KP 54 Mv¹⁴ / 150	600/75	54/150
KP 62 Mv¹⁴ / 200	600/75	62/200
KP 76 Mv¹⁴ / 250	600/60	76/250
KP 98 Mv¹⁴ / 300	400/50	98/300
KP 125 Mv¹⁴ / 350	400/50	125/350

Kombiplast ZSK/ES-A	Max. screw speed [min⁻¹]	Screw diameter [mm]
KP 26 Mc¹⁸ / 60	600/115	25/60
KP 32 Mc¹⁸ / 100	600/100	32/100
KP 45 Mc¹⁸ / 100	600/100	45/100
KP 58 Mc¹⁸ / 150	600/75	58/150
KP 70 Mc¹⁸ / 200	600/75	70/200
KP 92 Mc¹⁸ / 250	600/60	92/250
KP 92 Mc¹⁸ / 300	600/50	92/300
KP 119 Mc¹⁸ / 300	400/50	118/300
KP 133 Mc PLUS / 350	400/50	133/350

Kombiplast KP Two-Stage Compounder

Compounding and pelletizing of PVC, cable and special compounds

Key benefits of the Kombiplast KP

Related Industries