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Slot Die Coating


Slot-die coating is a highly versatile thin-film deposition technique that seamlessly integrates into scalable manufacturing processes, including roll-to-roll and sheet-to-sheet systems.

Prepare your research for scale-up with our slot die coating range. Designed for flexibility and precision, the Ossila Slot Die Coater gives you complete control over coating parameters through intuitive software and a wide selection of useful accessories. Achieve consistent, high-quality films every time.

Set Up Your Slot Die Coater


Customize Your Slot Die Coating Process


One of the key advantages of slot-die coating is the straightforward relationship between wet-film thickness, solution flow rate, and substrate speed. With our range of accessories, you can fine-tune these parameters to achieve greater precision, flexibility, and repeatability in your thin-film coatings. With interchangable add-ons and accessories, you can further tailor your slot die coater to fit your coating needs.

Solution Deposition Control

You can control solution deposition in slot die coating by using shims or meniscus guides between the slot die head pieces. Shims define the channel width which helps control pressure drop across the slot die head. Meniscus guides pin and guide the solution pathway, preventing unwanted spreading. We would recommend using both of these for optimial slot die coating.

Shim and meniscus guides in slot die coater head
Shims and meniscus guides control solution deposition through slot die heads.

Flexible Substrate Coating

Move your slot die coating beyond rigid substrates and optimize coatings on flexible substrates with the roll attachment. This allows you to optimize coating of foils, PET films and other flexible substrates with small amounts of solution, while ensuring your methods remain compatible with larger, industrial roll-to-roll systems.

Slot die roll attachement

Drying Management and Post-Deposition Treatment

Control drying mechanisms post-coating with the air knife for slot die coaters. An air knife creates a controlled curtain of air that can be directed towards your wet film at a variety of angles. Moving in sync with the coating head, it allows you to adjust both angle and distance for precise control of the drying front.

Air-Knife for drying control post-coating

Expanding Functionality

Beyond slot die coating, you can also experiment with alternative coating methods such as bar coating with the bar coater adapter. This allows you to mount Mayer bars onto your slot die coating for coating small substrates and take advantage of optimized drying with the the heated stage and air knife attachments.

Bar coating adapter

Optimize Solution for Slot Die Coating

With the bar coating adaptor, you can also start optimizing your solution for large scale coating before fine-tuning slot die coating parameters. Bar coating is a relatively simple technique that can easily make a thin film. You can initally use the bar coating adaptor to make sure your solution will spread nicely, and to find an optimum coating speed or optimal film thickness. Once you have done this, you can begin optimizing the slot die coating process with a few key parameters already figured out.

Resources and Support


How to Set Up the Ossila Slot Die CoaterHow to Set Up the Ossila Slot Die Coater

Learn how to set up your slot die coater and how to define your coating paramters in order to effectively optimize your coating processes.

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How to Attach the Slot Die Coater Roll AttachmentHow to Attach the Slot Die Coater Roll Attachment

Learn how to setup the roll attachment to easily coat foils and other flexible substrates without the need for a vacuum stage.

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Slot-Die Coating: Practical Guide to Theory and Troubleshooting Slot-Die Coating: Practical Guide to Theory and Troubleshooting

Slot-die coating is an extremely versatile deposition technique in which a solution is delivered onto a substrate via a narrow slot positioned close to the surface.

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Thin Film Deposition: Comparing Coating Methods Thin Film Deposition: Comparing Coating Methods

When it comes to depositing highly-uniform wet thin films, there are many different solution-processing techniques capable of producing high-quality films at low cost.

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