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Slot Die Coating Machine

Introduction

Kerone’s Slot Die Coating Machines are designed for applications that demand extreme precision, micron-level coating uniformity, and zero-tolerance defects. By delivering a controlled volumetric flow through a finely engineered die lip, slot die coating ensures highly stable and repeatable coating layers across films, foils, electrode sheets, optical substrates, and specialty materials. This technology is essential for industries where performance and reliability are directly tied to coating accuracy—such as batteries, optical films, electronics, energy storage devices, and high-performance engineering films.

In the Slot Die process, the coating is pressed out by gravity or under weight through a slot and onto the substrate. In the event that the coating is 100% solids, the process is termed “Extrusion” and for this situation, the line velocity is regularly much speedier than the rate of the extrusion. This empowers coatings to be significantly more slender than the width of the slot. Slot Die Coating is a repeatable, solid coating strategy that keeps on gaining support in a mixed bag of coating.

Why Choose Kerone Slot Die Coating Machine

We at KERONE are having 48+ years experience in designing and manufacturing various types of specialized coating and impregnation plants for various industrial processing needs of our clients. We are having immense experience in designing and manufacturing of Slot Die coating machine that can best fit for the size and various processing requirements of the client’s business. The Slot Die coating machines manufactured by KERONE are made with high quality internal and external material by taking discreet efforts for the perfect coat and uniform heat distribution.
Kerone utilizes advanced machining, metrology, and computational fluid dynamics (CFD) to design slot dies with ultra-tight tolerances and excellent flow distribution characteristics. These systems feature stable hydraulic flow paths, precise pressure control, and the ability to handle both extremely thin and high-viscosity coatings. With integrated automation, closed-loop feedback, and superior material utilization, Kerone slot die systems reduce waste, enhance production quality, and deliver consistent performance across long production runs.

Types and Features of Slot Die Coating Machine

Kerone offers a comprehensive range of slot die configurations tailored for different materials, viscosities, and industrial processes. Single-lip slot dies are preferred for thin, uniform coatings, while dual-lip slot dies provide enhanced stability and edge control for more complex formulations. Heated slot dies support hot-melt adhesives, high-viscosity polymers, and temperature-sensitive materials by maintaining consistent rheology throughout the coating process. Vacuum slot die coaters improve wetting and eliminate air entrapment, making them suitable for ultra-thin functional layers. Slot die systems paired with backing rollers ensure consistent nip pressure and excellent substrate contact, while advanced edge-bead elimination and closed-loop thickness control systems guarantee precise coating uniformity across the full web width. Kerone also integrates slot dies with complete coating lines, including tension control, web handling, and multi-zone drying units for a seamless production workflow.

Advantages:

Able to coat organic or inorganic liquids on flexible or rigid substrates
Excellent coating uniformity (typically ±3% or better)
Capable of coating a wide range of process materials, including high and low viscosity fluids
Ability to deposit a wide range of thicknesses
High efficiency and high material utilization (typically 96% process material utilization)
Technology proven scalable from small R&D setups to large panel, high-volume or mass production
Highly reliable and robust process
High throughput (low TACT) processing

Key Features

Micron-level coating uniformity with precise volumetric control
Highly repeatable, defect-free coating for functional and technical applications
Closed-loop pump and flow control for stable, consistent output
Suitable for ultra-thin layers (as low as 2–10 microns) and high-viscosity materials
Heated slot die and temperature conditioning for demanding formulations
Edge-bead control and full-width uniformity for high-performance industrial coatings

Powered by AI, ML & IoT

Future-Ready Engineering Driven by AI & IoT

Our advanced AI, ML, and IoT technologies, this solution delivers smarter automation, real-time insights, and predictive intelligence to enhance efficiency and drive future-ready growth.

Real-Time Monitoring & Control

Continuous tracking of process parameters with instant adjustments.

Predictive Maintenance

Intelligent fault detection to prevent failures before they occur.

Adaptive Process Optimization

Dynamic tuning of operations for maximum output and efficiency.

Cloud Dashboards & Analytics

Unified access to real-time insights and performance trends.

Energy & Resource Savings

Smarter utilization of energy to cut costs and reduce waste.

Secure IoT Connectivity

Encrypted data flow with seamless integration across plant systems.

Applications of Slot Die Coating Machine

Kerone Slot Die Coating Machines are used widely for:

Lithium-ion battery electrode coating (cathode/anode)

Optical, anti-reflection, and display film coatings including OLED layers

Solar cell and photovoltaic functional coatings

Pressure-sensitive adhesives and laminated films

Electronic insulation, dielectric, and barrier coatings

High-performance medical, engineering, and specialty polymer coatings

Kerone’s Slot Die Coating Machines set the benchmark for precision coating technology. With advanced engineering, high reproducibility, seamless automation, and compatibility with modern functional materials, these systems serve as the ideal solution for industries that require exacting coating accuracy and flawless uniformity across every production cycle.