Coatema Prepreg Production Line

Overview

The Coatema Prepreg Production Line is a fully integrated, modular industrial system engineered for the continuous, high-precision manufacturing of fiber-reinforced thermoset and thermoplastic prepregs. Based on Coatema’s decades of expertise in web-based coating, impregnation, and lamination technologies, this production line implements controlled resin transfer through precision metering, heated nip roll systems, and vacuum-assisted consolidation—ensuring uniform resin distribution, minimal void content, and repeatable areal weight (g/m²) across wide-format substrates (100–2000 mm working width). Designed for scalability from lab-scale process development to full commercial output, the line supports both solvent-based and solvent-free formulations—including epoxy, phenolic, BMI, and high-performance thermoplastics such as PEKK, PEEK, and PA6—enabling manufacturers to meet stringent aerospace, automotive, and wind energy composite specifications.

Key Features

• Modular architecture with configurable stations: unwinding, surface treatment (corona/plasma), resin application (slot-die, roll-coating, or spray), impregnation (nip-roll or vacuum-assisted), drying/curing (multi-zone IR + convection ovens), cooling, and rewinding
• Real-time tension control across all zones with servo-driven drives and load-cell feedback for consistent fiber alignment and resin saturation
• Temperature-controlled processing zones: 40–250 °C for thermosets; 80–400 °C for thermoplastics—each with independent PID regulation and NIST-traceable calibration
• Resin delivery system compatible with viscosities ranging from 100 to 50,000 mPa·s (thermosets) and up to 200,000 mPa·s (thermoplastics), supporting both pump-fed and extrusion-assisted metering
• Integrated metrology: in-line laser micrometers for thickness (±1 µm resolution), gravimetric areal weight monitoring (±0.5 g/m²), and thermal imaging for cure uniformity assessment
• CE-compliant safety architecture with SIL2-rated emergency stop, interlocked access points, and ATEX options for solvent-handling configurations

Sample Compatibility & Compliance

The Coatema Prepreg Line accommodates a broad spectrum of reinforcement architectures—including unidirectional carbon/glass tapes (3K–24K), woven fabrics (plain, twill, satin), non-crimp fabrics (NCF), and hybrid textiles—as well as continuous fiber thermoplastic tapes (CFRTP). Resin compatibility spans low-viscosity epoxy systems for aerospace-grade B-staging, high-solids phenolics for fire-retardant applications, and molten thermoplastic melts requiring precise shear and residence time control. The system complies with ISO 9001:2015 quality management requirements and supports validation protocols aligned with ASTM D3518 (shear modulus), ASTM D7205 (tensile properties), and EN 2561 (prepreg specification). Optional documentation packages include IQ/OQ protocols and 21 CFR Part 11–compliant electronic records for regulated environments.

Software & Data Management

The line is operated via Coatema’s proprietary HMI platform built on Beckhoff TwinCAT 3, enabling synchronized motion control, recipe management, and real-time data logging at 100 Hz sampling rate. All process parameters—including line speed (5–100 m/min, depending on configuration), oven zone temperatures, resin flow rates, and web tension—are logged with timestamped metadata and exported in CSV/OPC UA format. Audit trails record user actions, parameter changes, and alarm events—fully compliant with GLP/GMP traceability requirements. Remote diagnostics and predictive maintenance alerts are supported via optional cloud gateway integration (TLS 1.2 encrypted).

Applications

• Aerospace primary and secondary structures (e.g., wing skins, fuselage panels) requiring AS9100-certified prepreg consistency
• Automotive structural components (battery enclosures, crash rails) where high stiffness-to-weight ratio and rapid cycle times are critical
• Wind turbine blade spar caps and shear webs demanding long-term fatigue resistance and environmental stability
• Medical device tooling and custom orthopedic implants using radiolucent carbon/PEEK prepregs
• R&D validation of novel resin chemistries (e.g., bio-based epoxies, vitrimers) under controlled scale-up conditions

FAQ

What is the minimum and maximum web width supported by standard Coatema prepreg lines?
Standard configurations support 100 mm to 2000 mm working widths; custom designs extend to 3000 mm upon engineering review.
Can the line handle both thermoset and thermoplastic prepreg processes without hardware modification?
Yes—modular station design allows reconfiguration between thermoset (solvent-evaporation + B-staging) and thermoplastic (melt impregnation + chill quench) modes; only tooling and temperature profiles require adjustment.
Is offline process development support available before line installation?
Yes—Coatema offers laboratory-scale coating trials, pilot-line validation (using its Dormagen R&D center), and full technical transfer documentation including SOPs and process windows.
What level of operator training and after-sales service is provided?
Comprehensive commissioning includes 5-day on-site operator and maintenance training, plus remote support via secure TeamViewer sessions and priority spare parts logistics from Coatema’s European hub.