Jwell Slot Coating Die Series for Precision Thin Coatings
This slot coating die uses a fixed lip and replaceable shims to configure thin, optical, adhesive, and functional coatings across the web width.
Key Selling Points
- Thin-Coating Range: Source-stated coverage extends from below 1 μm to 254 μm.
- Shim-Based Configuration: Replaceable gap-control shims set coating thickness and width.
- Optical Coating Support: Designed for thin and transparent optical coating applications.
- Cross-Web Control: Source references approximately 5% coating-quantity variation at 2 μm.
- Broad Media Coverage: Supports documented adhesive, battery, membrane, electronic, and functional-coating uses.
Applications and Material Options
- Coating media: General adhesives, transparent adhesives, magnetic slurry, and photoresist materials.
- Functional products: Batteries, ceramic capacitors, fuel cells, solar cells, superconductors, and electronic displays.
- Web products: Filtration membranes, pressure-sensitive tape, tear tape, and window film.
- Stated coating range: Less than 1 μm to 254 μm.
Product Description
The JWELL slot coating die is designed for very thin coatings, including transparent optical layers, where coating quantity must be controlled across the full working width. Unlike wipe-based systems that spread liquid mechanically on the substrate, the documented narrow-gap design meters coating liquid through the die-lip opening.
The source states a relatively large die-lip gap of up to 0.0762 mm while describing finished coatings as thin as 1 μm. It also references operation at 0.002 mm, or 2 μm, with coating-quantity variation across the width controlled to approximately 5%. The broader documented coating-thickness range extends from less than 1 μm to 254 μm. These values should be reviewed together with the actual liquid rheology and line conditions during technical selection.
The die lip is fixed. Replaceable gap-control shims are used to change coating thickness and width, giving buyers a defined mechanical method for configuring different products without attributing unsupported automatic-control functions to the die.
Documented media and application areas include general and transparent adhesives, batteries, ceramic capacitors, decorative surfaces, electronic display media, filtration membranes, flooring, fuel cells, magnetic slurry, medical products, photoresist materials, pressure-sensitive tape, solar cells, superconductors, tear tape, and window film. The source does not specify web speed, liquid viscosity, flow rate, pressure, die steel, or heating method. These parameters, along with width and final tolerance requirements, should be confirmed for each coating formulation and production line.
