Slot Die Extrusion Coating Machine for Roll to Roll Electrode Coating

Product Overview

This compact roll-to-roll slot die extrusion coating machine is engineered for non-contact, continuous coating of laboratory-scale web materials. It combines a SUS630 stainless-steel slot die, precision syringe-pump feeding, stable substrate transport, and an integrated infrared-heated oven to provide controlled slurry application and drying in one system. The result is a practical platform for evaluating coating processes where film consistency, thickness control, and repeatable handling are critical.

The equipment is particularly suited to lithium battery positive and negative electrode coating, including solid-state battery research where glovebox-compatible equipment is required. Its compact stainless-steel oven and benchtop format also support process exploration for FCCL, optical films, high-end adhesive tapes, and other functional films. It is intended for laboratories and sample lines that need to investigate slurry, substrate, web-handling, and drying parameters before scale-up.

Designed for demanding R&D operation, this unit uses closed slurry transfer, servo automatic tension control, photoelectric web guiding, PLC control, and HMI operation. These coordinated systems help maintain stable web travel and reduce the effect of external process interference, supporting consistent experimental conditions across repeated coating runs.

Key Features

• Non-Contact Slot Die Coating: The equipment applies slurry through a simple slot die extrusion process designed for continuous coating. This non-contact application approach supports controlled deposition on moving foil substrates while avoiding direct contact between the coating head and the web.

• Precision Syringe-Pump Feeding: A precision syringe pump supplies slurry to the coating head, with a single processing capacity of 1 L. The enclosed material path supports controlled slurry delivery and helps limit external parameter interference during the coating process.

• SUS630 Stainless-Steel Coating Head: The slot die is manufactured from SUS630 stainless steel. This material selection provides corrosion resistance and broad suitability for coating processes involving battery electrode slurries and other applicable formulations.

• High Coating Precision: The system provides coating precision of +/-3 um, with a guaranteed maximum coating width of 200 mm. This capability is valuable when comparing formulation, coating-gap, feed, and drying variables in electrode and functional-film development.

• Controlled Web Tension and Alignment: Servo automatic tension control is used for both unwinding and rewinding. Photoelectric automatic web guiding, automatic EPC control, and a 50 mm travel range help maintain stable material transport and support an alignment accuracy of +/-0.5 mm.

• Infrared Oven with Independent PID Control: The 500 mm oven uses infrared heating tubes and an independent high-precision digital PID temperature-control mode. With a maximum temperature of 150C and oven temperature difference of <=+/-2.5C, it is configured to promote uniform material drying during laboratory coating trials.

• Glovebox-Compatible Compact Construction: The compact stainless-steel oven is corrosion resistant and designed for glovebox use. This makes the equipment suitable for solid-state battery research workflows that require processing in a controlled atmosphere.

• Precision Roller Engineering: The coating roller has circular runout of <=+/-1.5 um, straightness of <=+/-1.5 um, and Ra0.4 surface finish, with hard-chrome plating. Guide rollers use oxidized aluminum surfaces, supporting stable substrate travel through the coating path.

• PLC, HMI, and Servo Integration: A touchscreen, PLC, and servo system provide the main control architecture. Operators can manage the process through a direct HMI interface while maintaining coordinated tension and material-handling operation.

Applications

Technical Specifications

Why Choose This Product

• Purpose-Built Precision for R&D: The combination of +/-3 um coating precision, a precision syringe pump, and controlled continuous coating provides a focused platform for laboratory and sample-line process development.

• Stable Web-Handling Architecture: Servo tension control, photoelectric web guiding, automatic EPC control, and specified alignment accuracy support consistent substrate travel from unwinding through rewinding.

• Engineered for Demanding Materials Work: The SUS630 coating head, hard-chrome-plated precision coating roller, oxidized aluminum guide rollers, and stainless-steel oven emphasize corrosion resistance and durable process hardware.

• Integrated Drying Control: Independent PID temperature control and infrared heating bring coating and oven treatment together in a compact unit, helping researchers assess the relationship between deposition and drying conditions.

• Adaptable Laboratory Deployment: Compatibility with aluminum and copper foil, applicable slurry viscosity and solids-content ranges, compact dimensions, and glovebox suitability make the system relevant to battery and functional-film research programs.

Contact us for a quote or a custom solution configured for your laboratory coating process and substrate requirements.

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