For lab-scale tape casting (also known as doctor blade coating), the most effective systems combine a high-precision vacuum chuck to hold the substrate flat and an integrated heating element to control the drying process. These features are critical for producing uniform, crack-free films for battery electrodes, fuel cell membranes, or ceramic tapes.

The key selection criteria of an appropriate tape casting coater: (1) Vacuum Bed: Essential for keeping thin foils (like Copper or Aluminum) or polymer films from wrinkling during the coating stroke. (2) Heating Method: Top heating (infrared or convection) dries the slurry surface first, while bottom heating (heated bed) transfers heat through the substrate. (3) Coating Speed: Look for variable speed control (typically 0–100 mm/s) to match the rheology of your specific slurry. (4) Doctor Blade Compatibility: Most of these units are compatible with adjustable micrometer doctor blades or fixed-gap film applicators.

References:

J. Ko, et al., Thin cathode for thermal batteries using a tape-casting process, Ceramic International, 2017, 43, 5789-5793

F. Shen, et al., Tape Casting of Thin Electrolyte and Thick Cathode for Halide-Based All-Solid-State Batteries, J. Electrochem. Soc., 2023, 170, 100505

H. Zhao, et al., Tape-Casting Fabrication Techniques for Garnet-Based Membranes in Solid-State Lithium-Metal Batteries: A Comprehensive Review, ACS Appl. Mater. Interfaces 2024, 16, 50, 68772–68793.