Why Use an Automated Conformal Coating Spray Robot

A typical conformal coating selective robotic spray process consists of a programmable XYZ coordinate platform with a valve or valves attached to a controllable arm, depositing coating onto a printed circuit board in areas specified by the system programming. Technology varies between different platforms and valves, but essentially, they achieve the same result. The goal is to deposit coating on specified areas and components, eliminating the need for masking which is required in batch processing with dip or spray booths.

The robotic selective coating generally offers a more cost-effective solution to batch coating. The process is infinitely repeatable, and a far more controlled coating thickness can be achieved from board to board and from batch to batch.

Additionally, masking and de-masking stages can be greatly reduced or even completely eliminated. As a result, masking mistakes that typically cause expensive re-work and stripping costs are also largely minimized or eliminated. Touch-up is also decreased after the coating process, as there is often little to no masking to be removed, causing little to no tears or lifting in the coating.

Another benefit is that less material is used. The system only sprays sufficient coating to cover the relevant areas of the board, offering another reduction in cost.