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Single‑Side Extrusion Coater for Battery Electrodes
Our lithium battery extrusion coater is designed for high‑volume production of both cathode and anode electrodes using the extrusion (slot die) coating method. This battery electrode slot die coating machine fully automates material feeding, unwinding, coating, web guiding, drying, and rewinding. As a continuous extrusion electrode coater, it supports continuous, intermittent, continuous slitting, and intermittent slitting coating modes – ideal for EV, digital, and energy storage battery cells. Coating width 100–1000mm, speed up to 50m/min, areal density tolerance ≤±1%.
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Single-Side Extrusion Coater for Battery Electrodes – 100-1000mm, 50m/min Slot Die Coating System
⚡ Key Performance: 100-1000mm coating width | 1-50m/min speed | ≤±1% areal density tolerance | ≤±0.5mm registration error | Single-side coating | PLC+HMI control | MES-ready
Product Overview – Single-Side Extrusion Coater
PPCELL’s single-side extrusion coater is a high-precision slot die coating system designed for lithium battery electrode production. This lithium battery extrusion coater applies anode and cathode slurries onto current collector foils using the extrusion (slot die) coating method – delivering superior thickness uniformity, higher coating speeds, and better edge definition compared to transfer coating.
This battery electrode slot die coating machine fully automates material feeding, unwinding, coating, web guiding, drying, and rewinding. As a continuous extrusion electrode coater, it supports continuous, intermittent, continuous slitting, and intermittent slitting coating modes – ideal for EV, digital, and energy storage battery cells. With coating width from 100-1000mm, speed up to 50m/min, and areal density tolerance ≤±1%, this machine is the preferred choice for high-volume battery production lines.
Key Features – Slot Die Coating Machine
- Extrusion (Slot Die) Coating Head: Provides precise, uniform wet film thickness with minimal material waste.
- Full Automation: Digital control of supply pump, unwind tension, coating gap, web guiding, drying temperature, and rewind tension.
- Multiple Coating Modes: Supports continuous coating, intermittent (pattern) coating, continuous slitting coating, and intermittent slitting coating.
- Advanced Drying System: Combination of active roller ovens and floating (air flotation) ovens for efficient, wrinkle-free drying.
- Web Guiding: Automatic edge correction before and after coating.
- Closed-Loop Slurry Supply: Integrated degassing and filtration options for consistent slurry quality.
- Flexible Configurations: Single-side or double-side coating with automatic tension control and real-time defect detection.
- MES-Ready: Standard communication interfaces for full production traceability and data integration.
Technical Specifications – Continuous Extrusion Electrode Coater
| Parameter | Specification |
|---|---|
| Coating Width | 100 – 1000 mm (customizable) |
| Coating Speed | 1 – 50 m/min |
| Areal Density Tolerance | ≤±1% |
| Coating Length Tolerance (Intermittent) | ≤±0.5 mm |
| Front/Back Coating Registration Error | ≤±0.5 mm |
| Rewind Edge Alignment | ≤±0.4 mm |
| Unwind/Rewind Roll Diameter | Up to 600 mm (optional) |
| Drying Temperature | Up to 150°C (electric, steam, or oil heating) |
| Coating Type | Single-side (double-side optional) |
| Control System | PLC + HMI |
| MES Integration | Standard |
Machine Configuration & Optional Upgrades
Standard Configuration:
- Slurry supply system (pressurized tank or pump)
- Unwind unit with automatic tension control
- Slot die coating head with micrometer adjustment
- Active roller oven + floating oven sections
- Web guiding system (unwind and rewind)
- Rewind unit with slip-shaft or center winding
- Main electrical cabinet with PLC & HMI
Optional Upgrades:
- Automatic Roll Change (Turret): For non-stop unwinding/rewinding.
- NMP Concentration Detector: Solvent recovery and safety monitoring.
- Online Thickness Gauge: Real-time areal density measurement (β-ray or laser).
- High-Speed Solenoid Valve + High-Speed Cylinder: For precise intermittent coating at high speeds.
- High-Speed Linear Servo Valve Control: For even faster pattern switching.
- Heating Methods: Electric heating, steam heating, or oil heating (thermal fluid).
Applications & Production Benefits
- High-Volume Battery Production: EV, power tools, digital devices, and energy storage systems.
- Superior Uniformity: ±1% areal density ensures consistent cell capacity and safety.
- Reduced Material Waste: Extrusion coating minimizes edge build-up and slurry loss.
- Scalable: Parameters developed on lab coaters transfer directly to this production system.
FAQ – Frequently Asked Questions
Q1: What is the difference between extrusion coating and transfer coating for battery electrodes?
Extrusion coating (slot die coating) uses a pre-metered extrusion head to apply slurry directly onto the substrate, delivering superior thickness uniformity, higher coating speeds, and better edge definition. Transfer coating uses a roller to transfer slurry from a coating pan to the substrate. Extrusion coating is the preferred method for high-volume EV battery production.
Q2: What is the maximum coating width and speed?
The machine supports coating widths from 100-1000mm (customizable) and speeds from 1-50m/min, with areal density tolerance ≤±1%.
Q3: Does this machine support both single-side and double-side coating?
Yes. The machine is configured for single-side coating as standard, with double-side coating available as an optional upgrade.
Q4: What drying options are available?
The system supports electric heating, steam heating, or oil heating (thermal fluid), with drying temperatures up to 150°C.
Q5: Can the machine be integrated with MES systems?
Yes. The machine is MES-ready with standard communication interfaces for full production traceability and real-time data management.
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