Strand Pelletizer T50 by EUROTECH

Overview

The Strand Pelletizer T50 is a precision-engineered inline pelletizing system designed for continuous thermoplastic and elastomeric compound processing in rubber and plastic compounding lines. Operating on the strand-cutting principle, the T50 draws extruded polymer strands from a single-screw or twin-screw extruder, cools them via water bath or air-cooling tunnel, and cuts them into uniform cylindrical pellets using a rotating knife assembly synchronized with strand velocity. Its robust mechanical architecture ensures stable pellet geometry (diameter tolerance ±0.15 mm), minimal fines generation (<0.3% by weight), and consistent bulk density—critical parameters for downstream gravimetric dosing, pneumatic conveying, and injection molding feedstock consistency. The T50 integrates seamlessly into ISO 9001-certified production environments and supports GLP-aligned process documentation when paired with compatible control systems.

Key Features

• High-precision synchronous cutting mechanism with adjustable knife speed (0–600 rpm) and programmable phase-lock to extrusion rate
• Modular cooling module: configurable water-bath length (up to 1.2 m) with temperature control range 10–40 °C, or forced-air cooling option for heat-sensitive elastomers
• Stainless-steel pellet transport system with variable-speed vibratory conveyor and integrated dust extraction interface (ISO 14001 compliant)
• Human-machine interface (HMI) with touchscreen controller supporting recipe storage, real-time cut-rate monitoring, and fault logging with timestamped event history
• Mechanically isolated knife housing with hydraulic knife pressure adjustment (0.5–3.0 bar) to maintain edge contact stability across varying strand hardness (Shore A 30–95)
• CE-compliant safety architecture including light curtains, emergency stop circuitry per EN ISO 13857, and interlocked access panels

Sample Compatibility & Compliance

The T50 accommodates strand diameters from 1.8 mm to 4.2 mm, covering standard formulations of SBR, EPDM, NBR, TPEs, PP, PE, and engineering thermoplastics (e.g., PA6, PC/ABS blends). It meets EU Machinery Directive 2006/42/EC and complies with EN 61000-6-2 (immunity) and EN 61000-6-4 (emission) standards. For regulated industries—including medical-grade polymer manufacturing—the system supports optional validation packages aligned with ASTM D3367 (pellet dimensional uniformity) and ISO 18871 (plastics—pellet quality assessment). All wetted components are constructed from AISI 316 stainless steel, certified to FDA 21 CFR 177.2400 for food-contact polymer processing.

Software & Data Management

The embedded T50 Control Suite enables local data logging of operational parameters—including strand speed, knife RPM, bath temperature, and cumulative pellet mass—at 1 Hz resolution. Export formats include CSV and XML, facilitating integration with MES platforms (e.g., Siemens Opcenter, Rockwell FactoryTalk) and LIMS systems. Audit trail functionality records all parameter changes with user ID, timestamp, and reason code—fully compliant with FDA 21 CFR Part 11 requirements when deployed with electronic signature modules. Optional OPC UA server support allows secure, firewall-friendly connectivity to enterprise SCADA networks without proprietary middleware.

Applications

• Quality-critical pellet production for tire tread compounds requiring narrow Mooney viscosity distribution and filler dispersion homogeneity
• Recycled PET and HDPE flake-to-pellet conversion lines where melt filtration residue minimization directly impacts final pellet clarity and mechanical performance
• R&D-scale compounding trials involving nanofilled thermoplastic elastomers, where pellet integrity must preserve nanoscale morphology post-cutting
• GMP-regulated pharmaceutical polymer excipient manufacturing (e.g., PVP, Eudragit® grades), where pellet size distribution (PSD) directly influences tablet compressibility and dissolution kinetics
• Automotive under-hood component suppliers requiring traceability from compound batch to pellet lot, enforced via barcode-linked production logs

FAQ

What extrusion output rates is the T50 rated for?
The T50 supports nominal throughput from 50 kg/h to 450 kg/h, dependent on polymer melt viscosity, strand count (1–12 strands), and pellet diameter specification.
Can the T50 be retrofitted with automatic knife wear compensation?
Yes—EUROTECH offers the T50-AWC add-on kit, which uses in-line laser profilometry to monitor blade edge degradation and dynamically adjust knife advance increments during operation.
Is remote diagnostics supported out of the box?
Standard Ethernet/IP connectivity enables remote access via secured VPN; advanced predictive maintenance analytics require optional EUROTECH Cloud Connect subscription.
Does the system include validation documentation for IQ/OQ protocols?
Factory-issued IQ/OQ templates are provided with each unit; full execution by certified field engineers is available as a commissioning service.
How is pellet drying handled post-cutting?
Integrated centrifugal dryers (0.5–2.0 kW) or vibrating fluidized-bed dryers are offered as configurable options—not included in base T50 configuration.