Multilayer Blown Film Extrusion Line – EUROTECH Multilayer Blown Film Machine

Overview

The EUROTECH Multilayer Blown Film Extrusion Line is an industrial-scale coextrusion system engineered for the precision manufacturing of multilayer polymeric films used in high-barrier packaging, medical laminates, agricultural mulch, and specialty flexible packaging applications. Based on the fundamental principle of tubular film extrusion—where molten polymer streams from multiple extruders converge within a specialized multi-manifold die, are inflated radially by controlled air flow into a bubble, and subsequently cooled via external air rings—the system delivers uniform gauge distribution, excellent layer symmetry, and reproducible optical and mechanical properties across all configured layer counts (3-, 5-, 7-, and 9-layer). Designed and manufactured in Italy, the line integrates modular extrusion units, a high-precision annular die with independent zone temperature control, a robust bubble cooling system, and a fully synchronized collapsing and winding station—all coordinated through a deterministic real-time control architecture.

Key Features

• Modular coextrusion architecture supporting scalable configurations: 3-, 5-, 7-, or 9-layer film structures with independent melt temperature profiling per extruder
• 7-inch industrial-grade capacitive touchscreen HMI with intuitive graphical interface for parameter setup, real-time monitoring of extruder torque, melt pressure, die temperature zones, bubble stability metrics, and haul-off speed
• Integrated Ethernet (LAN) connectivity enabling remote diagnostics, centralized production monitoring, and integration into factory-level MES or SCADA environments
• USB 2.0 data export port for timestamped logging of process variables—including screw RPM, barrel zone temperatures, melt pressure, air ring airflow rates, and nip roll velocity—at user-defined intervals (1–60 sec)
• Annular die with segmented heating zones (±0.5 °C thermal stability) and adjustable die lip clearance to optimize layer interfacial adhesion and minimize weld line defects
• High-efficiency spiral air ring with independently controllable airflow sectors for uniform circumferential cooling and bubble stabilization under variable output rates

Sample Compatibility & Compliance

The system accommodates standard thermoplastic resins including LDPE, LLDPE, HDPE, PP, EVOH, PA6, PETG, and ionomer-based barrier layers. All wetted components—including screw barrels, die manifolds, and adapter blocks—are constructed from nitrided tool steel (X40CrMoV5-1) with hardness ≥700 HV, ensuring long-term resistance to abrasive fillers and thermal degradation. The control system complies with CE Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. Electrical safety conforms to IEC 60204-1:2018. While not certified as Class I medical device manufacturing equipment, the system supports GLP-aligned documentation practices when paired with validated data export protocols and audit-trail-enabled SCADA integration.

Software & Data Management

The embedded control firmware provides native CSV-formatted data export via USB storage devices, preserving full traceability of operational parameters without proprietary file formats. Timestamps adhere to ISO 8601 (YYYY-MM-DDTHH:MM:SSZ), and each data packet includes machine ID, operator login tag (if enabled), and configuration checksum. No cloud upload or vendor-hosted analytics platform is included; all data remains under full user ownership and local control. For regulated environments, the system supports integration with third-party electronic batch record (EBR) systems compliant with FDA 21 CFR Part 11 requirements—provided the external software manages digital signatures, audit trails, and role-based access control independently.

Applications

• Development and pilot-scale production of high-barrier food packaging films (e.g., PE/EVOH/PE, PP/PA6/PP structures)
• Manufacturing of medical pouch laminates requiring sterile barrier integrity and seal strength consistency
• R&D of biodegradable multilayer films using PLA/PBAT blends with functional tie layers
• Process validation studies for film thickness uniformity (ASTM D3746), haze (ASTM D1003), and tensile properties (ASTM D882)
• Testing of novel additive masterbatches—including nanoclays, antimicrobial agents, and UV stabilizers—in layered architectures

FAQ

What layer configurations are physically supported by this system?
The line is mechanically and hydraulically configured for 3-, 5-, 7-, and 9-layer coextrusion. Each configuration uses a dedicated multi-manifold die assembly; changing layer count requires die replacement—not firmware reconfiguration.
Is real-time remote monitoring possible without third-party middleware?
Yes—via standard Ethernet TCP/IP communication using Modbus TCP protocol (register map available upon request). No subscription or cloud gateway is required.
Can process data be exported in a format compatible with statistical process control (SPC) software?
Yes—CSV exports include column headers, time stamps, and engineering units (e.g., °C, rpm, bar, mm/min), enabling direct import into JMP, Minitab, or Python-based SPC libraries.
Does the system support automatic recipe recall and versioning?
The HMI supports up to 99 named recipes stored locally on the controller’s non-volatile memory, each with revision date stamp and operator ID. Recipe overwrite requires dual authentication.
Are spare parts and technical documentation available in English?
Full English-language technical manuals, electrical schematics, and exploded diagrams are supplied with commissioning. Critical spares—including die lips, O-rings, and thermocouple assemblies—are stocked by EUROTECH’s regional distribution partners under part-number traceability.