Here’s how an air knife coating unit works:
Liquid Coating Supply: The liquid coating is supplied to the air knife unit from a reservoir or pump system. The coating is typically a solution or suspension that needs to be applied evenly onto the substrate.
Air Knife: The air knife is a nozzle or series of nozzles that emit a high-velocity airstream. The airstream is directed at the substrate, creating a thin, uniform layer of coating on its surface.
Coating Application: As the substrate passes under the air knife, the liquid coating is applied to its surface. The high-velocity airstream helps to control the thickness and uniformity of the coating, ensuring an even application.
Drying or Curing: After the coating is applied, the substrate may pass through a drying or curing process to remove any solvent and solidify the coating. This can be done using heat, infrared radiation, or other methods depending on the coating material.
Control System: The air knife coating unit may include a control system that allows operators to adjust the airflow, liquid coating flow rate, and other parameters to achieve the desired coating thickness and quality.
Applications: Air knife coating units are used in a wide range of industries, including automotive, packaging, printing, and electronics. They are suitable for applying coatings such as adhesives, lubricants, paints, and coatings for corrosion protection or surface enhancement.
Overall, air knife coating units offer a precise and efficient way to apply thin, uniform coatings onto substrates, making them an essential tool in many manufacturing processes.
