High-Velocity Twin-Screw Extruder / Pelletizing Solution

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High-Performance Compounding & Pelletizing

High-Velocity Twin-Screw Extruder / Pelletizing Solution

Our high-velocity co-rotating twin-screw extruder delivers dependable performance for rigorous compounding, high-filler modification, and heat-sensitive polymer processing. Engineered with patented Heat Wave Stabilization™ and optional 2-stage compounding arrays for maximum output purity and melt uniformity.

High-Velocity Twin-Screw Extruder Pelletizing Solution

Working Principle & Extrusion Mechanics

Engineered for intense dispersive and distributive mixing with continuous thermal equilibrium.

Diagram of co-rotating twin-screw extruder barrel with figure-8 flow arrows

Patented Heat Wave Stabilization™ & Figure-8 Motion

All extruders from Rumtoo Machinery come standard with our patented Heat Wave Stabilization™, ensuring thermal energy is uniformly dispersed throughout the entire barrel length without localized scorching or cold pockets.

Co-rotating, closely intermeshing screw shafts blend the molten plastics into each other continuously along a figure-8 flow path. This creates an optimal environment for intensive plasticization, devolatilization, and high-filler dispersion. For specialized polymer shearing profiles, custom counter-rotating screw configurations are also available upon engineering review.

4-Stage Compounding & Pelletizing Flow

From multi-component feeding to dust-free pellet collection, every phase is engineered for continuous industrial throughput.

01

Accurate Dosing & Feeding

Volumetric or gravimetric side-feeders introduce polymers, masterbatches, calcium carbonate, or reinforcing fibers with precise ratio control directly into the melting zone.

02

Co-Rotating Plasticization

Intermeshing modular screw segments apply controlled shear and Heat Wave Stabilization™, achieving complete homogenization and vacuum devolatilization of moisture and volatiles.

03

Hydraulic Screen Filtration

Dual-piston hydraulic screen changers filter foreign contaminants and unmelted residues, enabling seamless screen replacements without stopping production lines.

04

Pelletizing & Classification

Water-ring die-face cutting or strand water-bath granulation produces uniform cylindrical or spherical pellets, followed by centrifugal drying and aerodynamic transport to storage silos.

Key Technical Advantages

Engineered for reliability, long service life, and demanding multi-polymer formulations.

2-Stage Array Flexibility

Can be coupled with a secondary single-screw extruder where twin screws handle compounding and single screws provide stable low-temperature die head pressurization.

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Uniform Heat Distribution

Patented Heat Wave Stabilization™ distributes thermal energy across all barrel segments, safeguarding heat-sensitive compounds and flame retardants from degradation.

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Gas-Nitrided Alloy Components

Drive shafts and barrel liners are forged from premium 38CrMoAlA alloy steel reinforced with gas nitriding, delivering exceptional wear and corrosion resistance against abrasive fillers.

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Versatile Pelletizing Modes

Easily equipped with hot-face water-ring cutting, strand bath pelletizing, or underwater cutting to accommodate diverse polymer rheologies and pellet geometry specifications.

Technical Specifications

Standard configurations for our two-stage twin-screw compounding and single-screw extrusion pelletizing lines.

Model Screw Diameter L/D Ratio Driving Motor Hourly Output
SHJ50 / SJ120 ∅50.2 mm / ∅120 mm 24/48, 7/20 37–45 kW / 30–37 kW 150–300 kg/h
SHJ75 / SJ150 ∅62.4 mm / ∅150 mm 24/48, 7/20 55–75 kW / 37–45 kW 150–300 kg/h
SHJ75 / SJ180 ∅71.0 mm / ∅180 mm 24/48, 7/20 90–110 kW / 45–55 kW 300–600 kg/h
SHJ95 / SJ200 ∅93.0 mm / ∅200 mm 24/48, 7/20 132–135 kW / 55–75 kW 500–1,000 kg/h

Swipe horizontally to view the full table.

SHJ50 / SJ120 150–300 kg/h
Screw Diameter ∅50.2 mm / ∅120 mm
L/D Ratio 24/48, 7/20
Driving Motor 37–45 kW / 30–37 kW
SHJ75 / SJ150 150–300 kg/h
Screw Diameter ∅62.4 mm / ∅150 mm
L/D Ratio 24/48, 7/20
Driving Motor 55–75 kW / 37–45 kW
SHJ75 / SJ180 300–600 kg/h
Screw Diameter ∅71.0 mm / ∅180 mm
L/D Ratio 24/48, 7/20
Driving Motor 90–110 kW / 45–55 kW
SHJ95 / SJ200 500–1,000 kg/h
Screw Diameter ∅93.0 mm / ∅200 mm
L/D Ratio 24/48, 7/20
Driving Motor 132–135 kW / 55–75 kW

Equipment Gallery & System Details

Explore precision engineering across our twin-screw extrusion barrels, gearboxes, and pelletizing lines.

Frequently Asked Questions

Common inquiries regarding twin-screw compounding lines, screw geometries, and system specifications.

Inquire Now & Request Equipment Quotation

Share your target polymer matrix, filler ratios, and capacity requirements. Our extrusion engineers will configure an optimized twin-screw compounding layout for your plant.

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Related Recycling & Pelletizing Equipment

Explore complementary machinery to complete your end-to-end plastics recycling infrastructure.

Author: Plastic Recycling Machine - Rumtoo

Rumtoo Plastic Recycling Machinery is a premier manufacturer specializing in high-performance solutions for PET bottle and PP/PE film recycling. With over 20 years of expertise, we offer an integrated range of equipment, including advanced Washing Systems, Pelletizing Lines, Plastic Shredders, and Crushers. Our technology is specifically engineered to transform challenging waste—such as soiled LDPE films and PP non-woven bags—into high-purity plastic granules. Today, Rumtoo supports hundreds of recycling facilities worldwide, processing thousands of tonnes of plastic monthly and driving global circular economy goals.