Secondary Battery Cathode/Anode Coating Machine (Dual Chamber)
High-speed electrode coating line that precisely coats cathode and anode with slot die heads and an 8-zone drying chamber.
A dual-chamber machine capable of coating both cathode and anode. Slot die heads precisely control coating thickness (1 µm deviation), while auto-splicing enables non-stop continuous casting and automatic density feedback ensures both quality and uptime on mass-production lines.
Basic specifications
Specifications are for the standard model. Width, speed, heat source and configuration are customized to your line conditions.
| Model | NETLCM-080L40_2FL (Cathode) / NETLCM-080L25_2FL (Anode) |
|---|---|
| Max. width | ~ 800 mm |
| Max. speed | ~ 80 m/min |
| Heat source | Electric heater |
| Coating method | Slot die coating |
| Drive | AC servo motor drive system |
| Explosion protection | Internal air-cooled circulation |
| Configuration | Unwinder · Density Gauge · Coating Unit ×2 · 8 Zone Dry Chamber · Outfeed/EPC · Rewinder (Auto Turret) |
Configuration & detailed specifications
Unwinder Part (Cathode / Anode)
Auto splicing changes bobbins automatically for non-stop continuous casting. Left/right taper chucking with auto turret rotation.
| Tension control | Real-time 50–500 N / full width, inverter motor |
|---|---|
| EPC | Screw drive · optical sensor · stroke ±75 mm · accuracy ±0.5 mm |
| Core | 6" FRP / Steel · Max Φ800 mm · 1,000 kg |
| Drive | AC servo motor |
Density Gauge
700 mm-wide beta-ray or X-ray gauge. Automatic measurement and feedback at three points: bare Al foil, after coating A is dried, and after coating B is dried.
Coating Unit ×2
Back-up roll + slot die + tank + pump. The on-roll method delivers high speed, thin films and continuous stability, and AC servo gap control keeps thickness deviation within ±1 µm.
| Coating width | Max 700 mm |
|---|---|
| Gap deviation | 1 µm |
| Coating modes | Continuous · intermittent · multi-lane |
| Slurry tank | 120 L SUS, mono pump up to 13 L/min |
| Filter | Mesh #100 + magnetic 8,000 gauss |
Dry Chamber
Electric heaters with hot-air circulation, 8 zones × 2 levels (1F: zones 1–8, 2F: zones 9–16). Precise temperature control and gas concentration management prevent explosion risk on the cathode side.
| Temperature | 70 – 150 ℃ (±2 ℃) |
|---|---|
| Control | PID per zone |
| Gas alarm | Alarm at 25 % / line stop + auto exhaust at 30 % |
| Interior material | SUS304, aluminum (exterior SS41 + insulation) |
| Explosion protection | Explosion-proof motors on cathode side |
Outfeed + EPC
S-wrap rollers and nip rollers maintain constant tension, with final lateral deviation within ±0.5 mm.
Rewinder Part
Same auto turret design as the unwinder. EPC edge deviation within 1 mm. Max diameter Φ800 mm, max weight 1,000 kg.
Control Unit
Main drive panel + coating panel + line drive panel. MITSUBISHI Q-series PLC, MITSUBISHI servos, YASKAWA inverters. Integrated monitoring with touch panel, signal tower and gas detection.
