Slot Die Coating consists in applying a coating material to a flexible substrate.
The coating material is forced out from an extruder through a slot by pressure, and transferred to the moving web. If the web is moving slowly, the coating is thick; if the web is moving quickly, the coating is thin. The slot supplies the exact amount of coating material to give the required coat weight and then transfers all of it to the web. Coat weight is not affected by viscosity.
Technoplants slot die coating system consists of: