Specific Process Knowledge/Polymer Processing/PolyFabLab/Coating/Slot Die Coater
A slot die coater is a precision coating device used to apply a thin, uniform layer of liquid material onto a moving substrate. It is widely used in industries such as electronics, batteries, solar cells, flexible displays, pharmaceuticals, and packaging because it provides accurate control over coating thickness with minimal material waste.
Working Principle
A slot-die coater operates by delivering a controlled flow of coating solution from a syringe pump into a precision-engineered slot-die head. The liquid exits through a narrow slit and is deposited as a uniform thin film onto a moving substrate (sheet). The coated substrate is subsequently dried or cured using integrated hot-air, substrate heater, or other drying modules, depending on the material system.
Main Component
- Precision slot-die head (available in different coating widths)
- Integrated syringe
- Motorized X-Y-Z coating bridge for accurate positioning
- Heated vacuum chuck (sheet-based systems)
- Drying/curing modules (hot air)
- Computer-controlled software for process control and recipe storage
- Safety enclosure and process monitoring system