EXTRUTEX EXCT-90 Co-Rotating Twin-Screw Extruder

90 mm Modular Co-Rotating Twin-Screw Extruder with Clamshell Barrel

The EXTRUTEX EXCT-90 is a high-capacity co-rotating twin-screw extruder engineered for demanding industrial polymer compounding, masterbatch production, engineering plastics, recycling, mineral-filled compounds and advanced thermoplastic processing. Designed around EXTRUTEX’s modular processing philosophy, the EXCT-90 combines exceptional throughput with outstanding process flexibility, allowing manufacturers to configure the machine for a wide variety of materials, formulations and production requirements.

Featuring a 90 mm screw diameter, 32–48 L/D configurations, 300–500 rpm screw speed, 180 or 220 kW drive options, and an output capacity of approximately 700–1,000 kg/hour, the EXCT-90 is designed for continuous large-scale manufacturing while maintaining the adaptability required for specialty compounds and changing production demands.

One of the defining features of the EXCT-90 is its clamshell barrel design, allowing operators to open the barrel quickly for cleaning, maintenance, inspection and screw configuration changes. Combined with independently controlled barrel temperature zones and a modular screw system, the EXCT-90 provides an efficient production platform that minimizes downtime while maintaining consistent product quality.

EXCT-90 Technical Specifications

Actual production capacity depends on polymer type, formulation, screw configuration, feeding system, temperature profile, residence time and downstream equipment.

High-Performance 90 mm Processing Platform

The 90 mm screw diameter provides a significant processing volume for manufacturers requiring industrial-scale production while preserving the versatility of EXTRUTEX’s modular twin-screw technology.

The co-rotating twin-screw system performs multiple processing functions simultaneously, including:

• Material conveying

• Controlled melting

• Plasticization

• Intensive mixing

• Kneading

• Dispersion

• Homogenization

• Degassing

• Pressure building

• Melt preparation

Unlike fixed-configuration extrusion systems, the EXCT-90 allows screw elements and barrel sections to be configured according to the material being processed. This flexibility enables manufacturers to optimize processing for different polymers, fillers, additives and specialty compounds without changing the entire machine platform.

Production Capacity of 700–1,000 kg/hour

The EXCT-90 is designed for an approximate production range of 700–1,000 kg/hour, making it suitable for high-volume industrial manufacturing.

This production capability makes the machine an excellent solution for continuous production of:

• Polymer compounds

• Masterbatch

• Filled compounds

• Engineering plastics

• Recycled polymers

• Specialty thermoplastic materials

Actual production depends on several process variables, including:

• Polymer type

• Melt viscosity

• Bulk density

• Filler concentration

• Additive loading

• Screw configuration

• Screw speed

• Feeding accuracy

• Barrel temperature profile

• Degassing requirements

• Downstream pressure

The wide operating window allows manufacturers to balance maximum productivity with material quality and process stability.

300–500 RPM Screw Speed

The EXCT-90 operates within a screw-speed range of approximately 300–500 rpm, providing flexibility for different processing conditions.

Higher operating speeds can increase mechanical energy input for demanding dispersion applications, while lower speeds may be selected when longer residence time or gentler processing conditions are required.

By combining adjustable screw speed with modular screw geometry, engineers can optimize:

• Throughput

• Mixing intensity

• Melt temperature

• Residence time

• Dispersion quality

• Pressure stability

• Product consistency

32–48 L/D Configurations

The EXCT-90 is available with 32–48 L/D configurations, allowing manufacturers to select the appropriate processing length for their application.

Shorter configurations are suitable for simpler compounding operations, while longer configurations provide additional space for multiple processing stages.

A typical long processing configuration may include:

Metering → Feeding → Conveying → Melting → Kneading → Dispersion → Homogenization → Degassing → Pressure Building → Filtration → Pelletizing

The modular barrel architecture allows these processing stages to be customized according to the formulation.

Clamshell Barrel Design

One of the most practical advantages of the EXCT-90 is its clamshell barrel system.

The hinged barrel can be opened within minutes, providing direct access to the screws and internal processing chamber.

This design simplifies:

• Product changeovers

• Cleaning

• Maintenance

• Screw inspection

• Screw-element replacement

• Removal of residual material

• Troubleshooting

• Process optimization

• Research and development

For manufacturers processing multiple formulations, rapid access to the processing chamber reduces downtime and increases production efficiency.

Modular Barrel Construction

The EXCT-90 uses a fully modular barrel design that allows individual barrel sections to be arranged according to the required processing sequence.

Different barrel sections can perform dedicated functions, including:

• Feeding

• Conveying

• Melting

• Intensive mixing

• Kneading

• Side feeding

• Additive incorporation

• Vacuum degassing

• Homogenization

• Pressure building

• Discharge

This modular approach allows engineers to design the processing line around the material rather than relying on one universal barrel configuration.

Independent Temperature Control

Each barrel section of the EXCT-90 can be controlled independently, allowing precise temperature management throughout the extrusion process.

Different stages of compounding require different thermal conditions.

For example:

• Feeding zones require controlled temperatures to prevent bridging.

• Melting zones provide the energy needed for plasticization.

• Mixing zones maintain appropriate melt viscosity.

• Degassing zones optimize volatile removal.

• Downstream sections stabilize the melt before discharge.

The combination of electric heating and controlled cooling allows engineers to maintain a stable thermal profile, improving:

• Melt quality

• Product consistency

• Processing stability

• Mixing efficiency

• Thermal history control

Modular Screw and Kneading System

The EXCT-90 features interchangeable conveying, mixing and kneading elements that allow engineers to create dedicated processing zones for different formulations.

Conveying Elements

Transport raw materials efficiently while maintaining stable material flow.

Melting Elements

Provide controlled polymer plasticization.

Kneading Blocks

Increase mechanical energy for intensive filler dispersion.

Mixing Elements

Deliver both distributive and dispersive mixing.

Homogenizing Elements

Improve melt uniformity before discharge.

Degassing Sections

Support removal of moisture and volatile components.

Pressure-Building Elements

Generate stable pressure for downstream processing.

This modular screw architecture allows the EXCT-90 to be optimized for a wide range of production requirements.

Complete Compounding Process

The EXCT-90 can perform every major stage of modern polymer compounding.

1. Metering and Feeding

Accurate feeding establishes formulation consistency.

The machine can process:

• Polymer pellets

• Powders

• Mineral fillers

• Pigments

• Additives

• Glass fibers

• Wood fibers

• Recycled materials

Multiple feeding points can be incorporated where necessary.

2. Conveying

The initial screw sections transport materials through the barrel while maintaining stable processing conditions.

3. Melting

Controlled thermal and mechanical energy convert solid polymers into a homogeneous melt.

4. Mixing and Dispersion

The twin-screw configuration provides excellent mixing performance for:

• Masterbatch

• Polymer blends

• Filled compounds

• Reinforced plastics

• Additive concentrates

5. Degassing

Vacuum degassing can remove:

• Moisture

• Air

• Residual monomers

• Solvents

• Volatile compounds

This is especially valuable for recycled materials.

6. Homogenization

Downstream screw elements stabilize the melt before filtration or discharge.

7. Melt Filtration

Optional filtration systems remove contaminants before pelletizing.

8. Pelletizing

The EXCT-90 can integrate with:

• Strand pelletizers

• Water-ring pelletizers

• Underwater pelletizers

• Sheet dies

• Profile dies

• Custom downstream equipment

Engineering Plastics Processing

The EXCT-90 is suitable for demanding engineering thermoplastics requiring precise temperature control and intensive mixing.

Applications include:

• PA compounds

• PC compounds

• ABS compounds

• PET compounds

• PBT compounds

• Modified engineering plastics

The modular screw configuration allows each material to receive an optimized processing profile.

Masterbatch Production

The EXCT-90 provides an excellent platform for producing:

• Color masterbatch

• Black masterbatch

• White masterbatch

• Additive masterbatch

• Filler masterbatch

Its intensive mixing capability helps achieve uniform pigment and additive dispersion while maintaining consistent pellet quality at high production rates.

Filled Polymer Compounds

The machine is particularly well suited for formulations containing:

• Calcium carbonate

• Talc

• Barium sulfate

• Glass fiber

• Mineral fillers

• Wood fiber

• Specialty fillers

The modular screw arrangement allows mixing intensity to be adjusted according to filler loading and dispersion requirements.

Recycling and Re-Compounding

The EXCT-90 is also designed for modern recycling operations.

Recycled polymers often require additional processing stages to remove moisture and contaminants while restoring material consistency.

A typical recycling configuration may include:

• Feeding

• Melting

• Mixing

• Vacuum degassing

• Filtration

• Homogenization

• Pelletizing

The modular barrel allows these stages to be arranged according to the characteristics of the recycled material.

Industrial Production Efficiency

With capacities reaching 1 metric ton per hour, the EXCT-90 is designed for demanding industrial production environments where productivity and reliability are essential.

The combination of modular processing technology and quick-access maintenance features helps reduce production interruptions while maintaining consistent product quality across long production runs.

Manufacturers can evaluate and optimize:

• Screw configurations

• Barrel arrangements

• Temperature profiles

• Screw speed

• Feeding positions

• Mixing intensity

• Degassing performance

• Throughput optimization

Wear-Resistant Construction

The internal components of the EXCT-90 are available with material options suitable for demanding industrial environments.

Standard configurations utilize nitrided steel components, while more demanding applications can incorporate enhanced wear-resistant and corrosion-resistant materials.

This is particularly important when processing:

• Glass fiber compounds

• Calcium carbonate compounds

• Mineral-filled polymers

• Recycled materials

• High-filler formulations

Proper material selection helps extend component service life while maintaining consistent processing performance.

Main Advantages of EXCT-90

High-Capacity 90 mm Platform

Designed for industrial compounding with outputs up to 1,000 kg/hour.

Modular Screw System

Flexible screw configurations for different formulations.

Clamshell Barrel

Fast access for cleaning, maintenance and screw changes.

Independent Temperature Zones

Precise thermal control throughout the extrusion process.

32–48 L/D Options

Configurable processing length for different applications.

300–500 RPM Operation

Flexible control of throughput and mixing intensity.

Wear-Resistant Components

Suitable for abrasive fillers and demanding formulations.

Industrial-Scale Production

Supports masterbatch, engineering plastics, filled compounds, recycling and specialty polymers.

Applications

The EXTRUTEX EXCT-90 is suitable for:

• Polymer Compounding

• Color Masterbatch

• Black Masterbatch

• White Masterbatch

• Additive Masterbatch

• Filler Masterbatch

• Calcium Carbonate Compounds

• Talc Compounds

• Glass Fiber Compounds

• Engineering Plastics

• Polymer Blending

• Recycled Polymer Compounds

• Recycling and Re-Compounding

• Specialty Thermoplastics

• Industrial Continuous Production

EXTRUTEX EXCT-90

The EXTRUTEX EXCT-90 represents the next level of high-capacity modular twin-screw compounding technology, delivering industrial-scale performance while maintaining the flexibility required for modern polymer processing.

With a 90 mm screw diameter, 300–500 rpm operating range, 32–48 L/D configurations, 180 or 220 kW drive options, and a production capacity of approximately 700–1,000 kg/hour, the EXCT-90 is engineered for demanding continuous production environments.

Its configurable screw architecture allows manufacturers to optimize the extrusion process for different formulations, while the clamshell barrel dramatically improves cleaning, maintenance and product changeover.

From masterbatch production and engineering plastics to filled compounds, recycling and specialty materials, the EXCT-90 provides a reliable, efficient and highly adaptable platform for large-scale polymer compounding.

EXTRUTEX EXCT-90 — Industrial-Scale Modular Twin-Screw Technology for High-Performance Polymer Compounding.