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Dry Film Electrode Coating Machine for Battery Production
The Dry Electrode Coating Machine provides superior precision and eco-friendly electrode coating for lithium batteries, with high-speed performance and reduced solvent usage.
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1. Overview
Heat Roll Coating Machine for Electrodes
The Dry Film Electrode Coating Machine is a next-generation manufacturing system designed for the production of lithium-ion battery electrodes without the use of solvents. By eliminating the traditional wet coating and drying processes, this machine significantly reduces energy consumption, capital expenditure, and environmental footprint while enabling higher energy density electrodes. It integrates powder mixing, fibrillization, and precision calendering into a continuous roll‑to‑roll operation, delivering uniform self‑supported films or directly coated current collectors.
2. Key Features
Electrode Coating Machine
Solvent‑Free Processing – No NMP or water, no solvent recovery system, and minimal factory footprint.
Continuous Roll‑to‑Roll Production – From dry powder input to finished electrode rolls in one integrated line.
High‑Shear Fibrillization – Proprietary mixing technology ensures homogeneous dispersion of active materials, conductive additives, and PTFE binder, forming a free‑standing film with excellent mechanical integrity.
Precision Thickness Control – Advanced calendering station with servo‑controlled gap adjustment ensures thickness tolerance ≤ ±2 μm.
Broad Material Compatibility – Suitable for LFP, NMC, LCO, graphite, silicon‑carbon, and solid‑state electrolyte formulations.
Modular Design – Easily scalable from R&D/pilot scale (e.g., 200 mm width) to mass production (up to 800 mm or wider).
3.Coating Machine Technical Specifications
| Parameter | Value / Range |
|---|---|
| Web Width | 200 – 800 mm (customizable) |
| Line Speed | 0.5 – 20 m/min (depending on material) |
| Electrode Thickness | 30 – 300 μm (adjustable) |
| Thickness Tolerance | ≤ ±2 μm |
| Active Material Loading | 5 – 30 mg/cm² (single side) |
| Calender Roll Diameter | 300 – 600 mm (heating optional up to 150°C) |
| Unwind/Reel Diameter | Max. 500 mm |
| Power Supply | 220/380 V, 50/60 Hz, 3-phase |
| Dimensions (L×W×H) | Custom per configuration |
4. Dry Film Electrode Coating Machine Process Flow
Raw Material Dosing – Automated gravimetric feeding of active material, conductive additive, and PTFE binder.
High‑Shear Mixing – Intensive mixing to induce fibrillization of PTFE, creating a dry, homogeneous powder mixture.
Film Formation – The mixed powder is fed into a calender nip, where it is compressed into a self‑supported film.
Lamination (optional) – The free‑standing film can be laminated onto a current collector (copper or aluminum foil) in a heated nip station.
Slitting & Rewinding – In‑line slitting to final electrode width and rewinding into finished electrode rolls.
5. Advantages Over Wet Coating Process
| Aspect | Dry Process | Wet Coating |
|---|---|---|
| Solvent Use | None | NMP or water required |
| Energy Consumption | ~70% lower | High (drying oven) |
| Floor Space | Compact | Large (coating line + oven) |
| Capital Investment | Lower | Higher (solvent recovery, drying ovens) |
| Electrode Density | Higher (no binder migration) | Limited by drying kinetics |
| Environmental Impact | Low (zero VOC) | VOC emissions / water treatment |
| Flexibility | Rapid material changeover | Long cleaning/changeover time |
6. Applications
Lithium‑Ion Battery Electrodes – Cathode (LFP, NMC, LCO) and anode (graphite, silicon‑carbon)
Solid‑State Batteries – Fabrication of thin solid electrolyte films and composite electrodes
Advanced Battery R&D – Fast prototyping of new material formulations without solvent compatibility constraints
Pilot & Mass Production Lines – Scalable solution for next‑generation gigafactories
7. Control & Automation
PLC with HMI touchscreen for recipe management, real‑time monitoring, and data logging.
Closed‑loop thickness control using online laser or ultrasonic sensors.
Optional MES integration for full production traceability.
8. Safety & Compliance
Enclosed mixing and material handling to minimize dust exposure.
Integrated fire suppression system (optional).
CE / UL certification available.
9. Customization Options
Heated calender rolls for improved film adhesion.
Double‑side lamination module.
In‑line thickness and defect inspection (CCD).
Explosion‑proof design for sensitive materials.
10. Why Choose Us
With years of expertise in dry electrode technology, we provide not only the equipment but also process development support to help customers transition from wet to dry coating seamlessly. Our machines are designed for high reliability, low maintenance, and fast return on investment.
📥 Download the Detailed Technical Brochure to explore full specifications and integration guides.
📞 Contact Our Engineering Team for a provide confidential consulting and customized performance analysis for your specific yield goals.