For years, dip coating has been known as the traditional method in applying comformal coating onto circuit boards. It is in this process wherein the circuit is dipped into a conformal coating liquid.
In its simplest form, a board can be dipped manually into a container of conformal coating. However, dip coating is normally done with equipment especially if medium and high volume processing is required.
There are several key variables that control the quality of the coating including
- Viscosity of the conformal coating
- Speed of immersion of the circuit board into the conformal coating
- Dwell time of the circuit board in the conformal coating
- Withdrawal speed of the board from the conformal coating
- Critical process controls
There are also five main advantages to the dip coating process. These are:
- Dipping is a high-speed conformal coating process
- It is highly repeatable
- Multiple circuit boards can be coated with dipping
- Both sides can be coated simultaneously
- The process requires less operator skill
Read more at Conformal Coating Application Methods: Dipping
Who is Nexus?
Nexus brings together the accumulated knowledge of a group of conformal coating and electronics material dispensing consultants who provide a unique service, focused on helping electronics manufacturing clients improve their conformal coating and electronics materials processes.
Nexus operate across North America, Europe and Asia and can provide a unique perspective to the rapidly growing conformal coating and electronics materials industry. Expertise is held in liquid and parylene coating, capital equipment sales and specifications and material, equipment and process specification, troubleshooting and training.