400mm Precision Separator Micro Gravure Coating Machine

Product Overview

This precision micro-gravure coating system is engineered for controlled application of ceramic slurry onto lithium-ion battery separator substrates. It combines unwinding, tension stabilization, micro-gravure coating, thermal drying, web guidance, traction, and rewinding into one continuous processing line. The equipment supports process control over coating width, dry coating thickness, coating weight, and running speed, helping manufacturers prepare uniformly coated separator rolls for downstream cell-production operations.

The unit is intended for PE and PP separator processing with alumina ceramic slurry formulated in deionized water. It is suited to battery separator development, pilot-scale validation, process optimization, and controlled production where a narrow web and low coating weight must be handled consistently. The defined material, slurry, and environmental requirements make this system appropriate for laboratories, battery R&D centers, advanced-materials facilities, and specialized separator coating operations.

Built around a staged web-handling workflow, the equipment maintains material flow from substrate unwinding through coating, drying, correction, and final winding. Its specified mechanical speed, oven layout, electrical heating arrangement, and controlled air requirements provide a practical platform for repeatable operation under demanding separator-coating conditions.

Key Features

• Integrated Continuous Web Process: The equipment follows a complete substrate-unwinding, tension-stabilization, micro-gravure-coating, drying, tension-stabilization, web-guiding, traction, and rewinding sequence. This coordinated layout supports orderly roll-to-roll separator processing and prepares coated material for subsequent manufacturing stages.

• Precision Micro-Gravure Application: Continuous coating is designed for a maximum coating width of 300 mm. The process capability supports single-side dry coating thicknesses from 1 to 10 µm and single-side coating weights from 10 to 25 g/m², addressing critical separator coating control points.

• Separator-Compatible Web Handling: The system processes PE and PP separator substrates with widths from 100 to 320 mm and thicknesses from 8 to 30 µm. This capability supports thin, lightweight separator materials that require stable transport through coating and drying stages.

• Defined Ceramic Slurry Window: The unit is specified for alumina slurry using deionized water as the solvent, with solids content of 3 to 15 wt%, density of 0.6 to 2.0 g/cm3, and viscosity of 500-2000 mPa.s. These parameters give process teams a clear operating basis for slurry preparation and coating trials.

• Electrically Heated Multi-Section Oven: A single-layer oven uses electric heating and consists of two 1.2 m sections for a total oven length of 2.4 m. With a maximum oven temperature of 140℃, the drying stage supports controlled thermal treatment after slurry application.

• High-Capacity Roll Accommodation: Both unwinding and rewinding stations accept rolls up to φ200 mm in diameter and up to 100 kg. They support 3-inch, approximately 76.2 mm internal-diameter cores with lengths of 450 mm or less, including metal, ABS plastic, and paper cores.

• Controlled Operating Speed: Coating speed is specified from 0.5 to 3 m/min, while maximum no-load mechanical speed is 5 m/min. This distinction allows buyers to evaluate production-process speed separately from the equipment's mechanical running capability.

• Specified Plant Interface Requirements: The equipment is designed for three-phase AC380V±10%, 50Hz power and requires filtered, regulated, oil-free, water-free compressed air at at least 0.6 MPa. Defined utility interfaces help engineering teams plan installation and commissioning requirements in advance.

Applications

Technical Specifications

Why Choose This Product

• Process-Focused Engineering: The equipment brings substrate handling, tension stabilization, coating, drying, correction, traction, and rewinding into a defined continuous process. This layout supports disciplined separator coating workflows rather than isolated handling steps.

• Relevant Precision Range: Specified limits for substrate dimensions, slurry properties, coating width, dry thickness, coating weight, and speed allow procurement and process teams to compare the unit directly against their operating requirements.

• Robust Roll Handling Capacity: Unwinding and rewinding provisions for rolls up to φ200 mm and 100 kg, together with support for metal, ABS plastic, and paper cores, provide practical compatibility with defined roll formats.

• Installation-Ready Technical Detail: Electrical supply, compressed-air quality, floor loading, environmental conditions, oven air volume, and overall dimensions are clearly specified to support facility planning before purchase.

• Configured for Demanding Separator Work: The specified PE and PP substrate range, alumina slurry window, and electrically heated 2.4 m oven make this system a focused investment for controlled ceramic separator coating operations.

Contact us for a quote or a custom solution aligned with your separator substrate, slurry, utility, and installation requirements.

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