ECON ESK Continuous Screen Changer
| Brand | ECON |
|---|---|
| Origin | Austria |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | ESK |
| Pricing | Upon Request |
Overview
The ECON ESK Continuous Screen Changer is an engineered solution for uninterrupted polymer extrusion processes in high-output thermoplastic compounding, recycling, and masterbatch production lines. Based on the dual-piston hydraulic switching principle, the ESK enables real-time screen replacement without stopping extrusion—eliminating process interruption, minimizing melt residence time, and preventing thermal degradation. Its design adheres to core rheological constraints of molten polymer flow: low-pressure-drop channel geometry, symmetric melt distribution across two independent piston chambers, and zero dead-volume flow paths. This architecture ensures consistent pressure stability (< ±1.5 bar fluctuation during switch), uniform shear history across batches, and full traceability of screen change events—critical for ISO 9001-compliant production environments and FDA-regulated medical-grade compound manufacturing.
Key Features
- Dual-piston hydraulically actuated mechanism with fully synchronized, fail-safe position feedback via redundant proximity sensors
- Zero-dwell-time screen exchange: complete filter swap within ≤3 seconds while maintaining full throughput
- Optimized flow path geometry reduces melt residence time by up to 40% compared to single-cartridge changers, mitigating thermal oxidative degradation in heat-sensitive polymers (e.g., PET, PC, bio-based PLA)
- Pressure-actuated switching logic: automatic piston displacement triggered at user-defined differential pressure thresholds (range: 5–35 bar), configurable via fieldbus interface
- Hard-chrome-plated piston rods and nitrided cylinder bores ensure >100,000 operational cycles with <0.02 mm wear tolerance under continuous 24/7 operation
- Integrated thermal isolation zones minimize heat transfer between hydraulic and melt domains, maintaining stable barrel temperature profiles ±0.5°C
Sample Compatibility & Compliance
The ESK accommodates standard industry screen packs (mesh sizes from 20 µm to 200 µm) and supports all major thermoplastic melts—including PP, PE, PS, ABS, PA6/66, TPU, and filled compounds (CaCO₃, talc, glass fiber). It operates reliably across viscosity ranges from 100 to 10⁵ Pa·s at processing temperatures up to 350°C. The unit complies with CE Machinery Directive 2006/42/EC, meets ATEX Zone 22 requirements for dust-explosive environments, and conforms to ISO 13849-1 PL e safety integrity level for emergency stop integration. Documentation includes EU Declaration of Conformity, material traceability certificates (EN 10204 3.1), and validation-ready IQ/OQ protocols aligned with GMP Annex 15 principles.
Software & Data Management
The ESK integrates seamlessly with industrial PLC systems (Siemens S7, Rockwell Logix, Beckhoff TwinCAT) via PROFIBUS DP, PROFINET IO, or EtherNet/IP. Optional ECON SC-View HMI provides real-time visualization of piston position, differential pressure, cycle count, screen life estimation, and timestamped event logging—including automatic generation of CSV-formatted audit trails compliant with FDA 21 CFR Part 11 (electronic signatures, operator ID, time/date stamps, and immutable change history). All data points are exportable for MES integration (ISA-95 Level 2) and support predictive maintenance algorithms based on pressure drift trends and cycle fatigue modeling.
Applications
- High-throughput recycling lines handling post-consumer PET flakes with high contamination loads
- Color-change-intensive masterbatch production requiring <5-minute material transition times
- Medical-grade polymer extrusion where batch consistency, absence of black specks, and documented screen integrity are mandated by ISO 13485
- Engineering thermoplastics compounding with abrasive fillers (e.g., carbon fiber, mineral reinforcements) demanding extended screen service life
- Multi-layer co-extrusion systems requiring synchronized screen management across primary and secondary extruders
FAQ
What is the maximum throughput capacity supported by the ESK series?
The ESK model is rated for continuous operation at up to 6,000 kg/h with standard screen configurations; higher capacities require custom bore sizing and hydraulic circuit recalibration.
Can the ESK be retrofitted onto existing extrusion lines?
Yes—standard flange interfaces (DIN 2526 / ISO 20848) and modular mounting kits enable mechanical integration with single-screw and twin-screw extruders from Coperion, Leistritz, Battenfeld-Cincinnati, and KraussMaffei Berstorff.
Does the system support automated screen inventory tracking?
When paired with ECON’s optional RFID-enabled screen magazine module, the system logs screen type, lot number, installation timestamp, and cumulative exposure time—enabling full lifecycle traceability per ISO 9001 clause 8.5.2.
How is hydraulic fluid contamination prevented in high-temperature extrusion environments?
A double-seal piston design with dynamic lip seals and static O-rings—separated by a vented intermediate chamber—prevents melt ingress; all hydraulic components are rated for continuous 80°C ambient operation with ISO 4406 16/14/11 fluid cleanliness.
