Extruders & Compounding Machines

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 Mv PLUS and ZSK Mc¹⁸

Kombiplast with ZSK Mv PLUS
Kombiplast with ZSK Mc¹⁸

Kombiplast ZSK/ES-A	Max. torque per shaft [Nm]	Specific torque Md/a³ [Nm/cm³]	Max. screw speed [rpm]	Max. motor power N [kW]	Screw diameter [mm]
KP 27 Mv PLUS / 60	100/260	10.6	600/115	13/3	27/60
KP 34 Mv PLUS / 100	205/1,200	11.3	600/100	27/13	34/100
KP 43 Mv PLUS / 150	420/4,050	11.3	600/75	55/33	43/150
KP 54 Mv PLUS / 150	815/4,050	11.3	600/75	108/33	54/150
KP 62 Mv PLUS / 200	1,250/9,600	11.3	600/75	165/79	62/200
KP 76 Mv PLUS / 250	2,275/18,750	11.3	600/60	300/124	76/250
KP 98 Mv PLUS / 300	5,000/32,390	11.3	400/50	440/178	98/300
KP 125 Mv PLUS / 350	10,300/51,470	11.3	400/50	906/283	125/350

Kombiplast ZSK/ES-A	Max. torque per shaft [Nm]	Specific torque Md/a³ [Nm/cm³]	Max. screw speed [rpm]	Max. motor power N [kW]	Screw diameter [mm]
KP 26 Mc¹⁸ / 60	140/260	15	600/115	18/3	25/60
KP 32 Mc¹⁸ / 100	315/1,200	18	600/100	42/13	32/100
KP 45 Mc¹⁸ / 100	930/1,200	18	600/100	123/13	45/100
KP 58 Mc¹⁸ / 150	2,000/4,050	18	600/75	264/33	58/150
KP 70 Mc¹⁸ / 200	3,500/9,600	18	600/75	462/79	70/200
KP 92 Mc¹⁸ / 250	7,500/18,750	17	600/60	990/124	92/250
KP 92 Mc¹⁸ / 300	7,500/32,390	17	600/50	990/178	92/300
KP 119 Mc¹⁸ / 300	15,300/32,390	17	400/50	1,346/178	118/300
KP 133 Mc PLUS / 350	20,000/51,470	15	400/50	1,759/283	133/350

Kombiplast KP Two-Stage Compounder

Compounding and pelletizing of PVC, cable and special compounds

Key benefits of the Kombiplast KP

Related Industries