Eurotech XTR20 Compact Single-Screw Extrusion Granulator

Overview

The Eurotech XTR20 Compact Single-Screw Extrusion Granulator is an entry-level, bench-scale extrusion system engineered for laboratory-scale formulation development, material screening, and small-batch compound production in polymer R&D, quality assurance, and pilot manufacturing environments. Based on classical single-screw extrusion principles—utilizing drag flow, pressure build-up, and shear-induced melting—the XTR20 integrates a precisely machined 20 mm diameter screw with a fixed 30:1 length-to-diameter ratio to ensure consistent melt homogenization, thermal history control, and residence time distribution across diverse thermoplastic and elastomeric feedstocks. Its compact footprint (under 1.2 m in length) and modular design enable seamless integration into ISO Class 7 cleanrooms, university teaching labs, and corporate innovation centers where space, energy efficiency, and operational repeatability are critical constraints.

Key Features

• Robust cast-iron barrel with bimetallic alloy liner for enhanced wear resistance and thermal stability across continuous operation at up to 300 °C
• High-precision AC servo-driven main drive delivering smooth torque response from 0.5 to 120 rpm, with ±0.2 rpm speed regulation accuracy
• Dual independent temperature control zones (barrel zone + die zone), each equipped with Pt100 RTD sensors and PID-based digital controllers achieving ±1 °C uniformity over full operating range
• Quick-change die assembly supporting interchangeable flat-face, strand, or underwater pelletizing configurations without tooling re-alignment
• Integrated vacuum venting port (optional) for moisture and volatiles removal during processing of hygroscopic resins (e.g., PA6, PET, PC)
• CE-compliant safety architecture including emergency stop circuit, interlocked access guards, and motor overload protection per IEC 60204-1

Sample Compatibility & Compliance

The XTR20 accommodates granular, flaked, and powder feed forms—including virgin polymers (PP, PE, PS, ABS), engineering thermoplastics (POM, PBT, PC), filled compounds (CaCO₃-, talc-, glass fiber–reinforced), and biodegradable matrices (PLA, PHA, PBS). Feed throat geometry and screw geometry are optimized for low-bridging performance and high solids conveying efficiency. All wetted components comply with FDA 21 CFR §177.2400 for indirect food contact applications when configured with food-grade barrel liners and stainless-steel die plates. System documentation supports GLP/GMP traceability requirements, including calibration certificates for temperature sensors and speed encoders, and optional IQ/OQ protocol templates aligned with ASTM D3835 and ISO 1133-2 test method frameworks.

Software & Data Management

The XTR20 operates via Eurotech’s proprietary EXTRUControl™ v3.2 HMI interface—a 7-inch resistive touchscreen running embedded Linux with real-time data logging at 10 Hz. Process parameters—including screw speed, barrel zone temperatures, melt pressure (via optional 0–100 bar transducer), motor load (%), and die temperature—are time-stamped and exportable in CSV or .tdms format. Audit trail functionality meets FDA 21 CFR Part 11 requirements through user role management (admin/operator), electronic signatures, and immutable log files stored on internal eMMC with optional network backup to NAS or LabArchives. Remote monitoring via Ethernet/IP is supported; Modbus TCP integration enables synchronization with upstream gravimetric feeders or downstream pellet dryers in automated workflows.

Applications

• Rapid screening of plasticizer efficiency, stabilizer dispersion, and compatibilizer performance in polymer blends
• Development of masterbatch formulations for colorants, flame retardants, or conductive additives
• Thermal degradation profiling under controlled shear and residence time conditions (e.g., comparing residence time distribution using tracer injection)
• Validation of rheological behavior prior to scale-up on production-scale twin-screw extruders (correlation studies per ISO 11443)
• Educational demonstration of extrusion fundamentals: solid conveying, melting transition, melt pumping, and die swell phenomena
• Regulatory sample preparation for ISO 179/Charpy impact testing, ISO 527 tensile bars, and ASTM D638 dogbone specimens

FAQ

What is the maximum recommended throughput for the XTR20 with standard configuration?
Typical throughput ranges from 1.5 to 4.5 kg/h depending on material density, melt viscosity, and screw speed—optimized for batch sizes between 200 g and 2 kg per run.
Can the XTR20 be upgraded to support twin-screw or co-rotating configurations?
No—the XTR20 is mechanically and control-system designed exclusively for single-screw operation. Eurotech offers parallel scalability via the XTR25 and XTR35 platforms for higher output or multi-component feeding needs.
Is custom screw profile design available?
Yes—Eurotech provides application-specific screw geometry consulting (e.g., barrier, mixing, or degassing flights) with delivery lead time of 6–8 weeks post-design approval.
Does the system include validation documentation for GxP environments?
Standard delivery includes factory calibration reports and electrical safety certification. Full IQ/OQ documentation, 3Q validation support, and 21 CFR Part 11 compliance packages are available as optional service add-ons.
What maintenance intervals are recommended for daily lab use?
Daily visual inspection of feed throat and die plate; monthly lubrication of gearbox and bearing housing; annual replacement of heater bands and RTD sensors—detailed in the EN/ISO 13849-1–aligned maintenance manual supplied with each unit.