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Slot Die Coating

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MBRAUN and its preferred partner network combined their specific expertise in inertgas technology and slot die coating in order to develop a tool that addresses the process requirements in emerging markets such like Organic Light Emitting Diodes (OLED), Organic Photovoltaic's (OPV) and Thin Film Batteries. Available in a range of sizes to coat current and next generation substrates the MBRAUN Slot Die Coater (MB-SDC) allows for efficient, highly-uniform, spin-less coating of a wide variety of organic materials. Offering a robust platform and precisely machined components that create high material yields (>95%) along with minimal operating and maintenance costs. Many high-performance coaters like the MB SDC are applied in advanced research applications up to high volume manufacturing environments.

Smaller slot die coaters in this series are designed for substrates up to 200 x 200 mm whereas larger units are available for processing substrates up to gen 4.5 and beyond. Amongst a variety of optional features the patterning capability stands out from others. This technique provides the opportunity to deposit multiple, well defined coated areas on a single substrate. Almost any array of rectangular shapes can be coated on a single panel (within fluid property limitations) without the use of a mask. Instead the setup utilizes precisely machined shims incorporated into the die head which omit certain parts not allowing the fluid to pass through. It is supported by an enhanced PLC system for liquid flow control, die positioning and substrate alignment. Profile of the leading and trailing edges of each patch are adjustable to suit a variety of coating liquid characteristics.

Please contact us if you have questions choosing the right Slot Die Coater for your specification needs.

Features

  • Able to coat organic or inorganic liquids on flexible or rigid substrates
  • Available for R&D as well as gen2 through gen8 substrate processing
  • Highly efficient process: technology ensures over 95% material use
  • High throughput process
  • Extremely accurate fluid dispense rates and volume control
  • Coating thickness range from under 20 nm to >150 µm
  • Minimal equipment footprint requirements
  • Low Fill Volume option limits lot size of high cost polymers and other materials
  • Multi-head configuration
  • Pattern coating capability (stripes and rectangles
  • Main control with graphical user interface (GUI)
  • Optimized for OLED lighting applications

Options

Slot Die Coaters are available in various configurations for applications that range from research and development up to high volume manufacturing environments.

Specifications

Please note: Specification may vary depending on configuration and model choice.

Substrate Stage

  • Granite base with active damping system; receiving pins; vacuum grooves for substrate fixation; stage flatness tolerance ± 2 μm

Die Head Stage

  • Multi-head configuration available; motorized die head positioning system (positioning precision ± 1 μm) with integrated die-2-glass auto-alignment (coating gap accuracy ± 3 μm)

Die Head

  • Noncorrosive stainless steel; slit opening precision ± 1.5 μm

Dispense Pump

  • Programmable syringe pump; flow rate from 0.0001 μl/hr to 220 ml/min; flow rate accuracy ± 0.35%; reproducibility 0.05%

Control Unit

  • Siemens S7-300 with touch panel (Mitsubishi control on request)

Film Properties

  • Material utilization > 95 %
  • Wet film thickness from 1 μm up to 200 μm (depending on material)
  • Dry film thickness from 1 μm up to 200 μm (depending on material)
  • Viscosity range from 1 mPas up to 25,000 mPas

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MB-SC-ADV

Usually deployed in R&D and pilot scale systems spin coating is a common technique used to apply uniform thin films to flat substrates. Usually an excess amount of a solution is dispensed onto the substrate, which is then rotated at high speeds in order to spread the fluid uniformly by centrifugal force.

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