Dip-coating

Dip coating refers to the immersing of a substrate into a tank containing coating material, removing the piece from the tank, and allowing it to drain. The coated piece can then be dried by force-drying or baking. It is a popular way of creating thin film coated materials along with the spin coating procedure.

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Stages of dip coating

The dip coating process can be, generally, separated into three stages:

• Immersion: the substrate is immersed in the solution of the coating material at a constant speed preferably judder free.
• Dwell time: the substrate remains fully immersed and motionless to allow for the coating material to apply itself to the substrate
• Withdrawal: the substrate is withdrawn, again at a constant speed to avoid any judders. The faster the substrate is withdrawn from the tank the thicker the coating material that will be applied to the board.