3-roll comma transfer intermittent/continuous coater specially customized for lithium lab & pilot production, ideal for Li-ion, supercapacitor and Ni-based battery electrode coating with industrial-level coating precision and integrated drying system.

Key Features

Double servo lead-screw driven metering roller allows adjustable trailing edge based on slurry viscosity.
Built-in touchscreen program supports free switching between continuous and intermittent coating modes.
Substrate tension control ensures stable web transport (adjustable tension: 1–80%) with an auto-detect edge correction unit.
Three-roll transfer coating with a wide processing window (adjustable coating width: 0–250 mm).
Comma doctor blade paired with a precision adjustment mechanism for high coating accuracy of ±3 μm.
Analog power heating control delivers high temperature precision and 1-year service life.
PLC control with intuitive touchscreen operation.
Optional solvent recovery treatment unit.

Technical Specifications

Coating Modes	Continuous coating, intermittent coating
Max Mechanical Speed	2 m/min
Coating Speed	0–1 m/min
Blade Structure	Double-sided comma blade
Coating & Blank Interval	Coating length 10–5000 mm, blank length 10–500 mm
Double-side Gap Alignment	Photoelectric detection auto-tracks head/tail gaps for front-back alignment
Applicable Substrate Thickness	Al foil: 8–30 μm, Cu foil: 6–30 μm
Guaranteed Max Coating Width	≤300 mm
Coating Thickness Accuracy	±3 μm
Double-side Coating Areal Weight Accuracy (mg/cm²)	±1.5% of central coating value (substrate included, edge abnormal areas excluded; sampling criteria refer to product evaluation document)
Single-side Dry Coating Thickness	20–200 μm
Applicable Solvent (Oil-based)	NMP (s.g=1.033, b.p=204°C)
Applicable Solvent (Aqueous)	H₂O/NMP blend (s.g=1.000, b.p=100°C)
Applicable Solid Content	20–85%
Coating Dimension Tolerance (mm)	Ls ±1, Ws ±0.5
Front-Back Registration Tolerance (mm)	Ls ±1, Ws ±0.5
Oven Quantity	2 sections
Single Oven Length	1 m
Max Designed Oven Temperature	150°C; temperature deviation per single oven section ≤±2.5°C
Air Supply Mode	Top & bottom air blowing; shared heater for upper and lower air chambers

Applications

Development of coating-drying processes requiring two distinct temperature zones.
Pilot-scale production trials for Li-ion and supercapacitor battery electrodes.
High-precision coating thickness and areal weight testing.

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