Path Programming to Prevent Air Entrapment: Pro Tip #29
PVA Pro Tip #29: Fine-Tuning Your Coating Process
Optimizing Your Coating Path to Prevent Air Entrapment
Our final installment in our series on troubleshooting bubbles in your coating process addresses how programming your path can influence air entrapment in your conformal coating.
Spray pattern width can often be modified by altering the height of the coating applicator from the circuit board surface. Each spray valve has their optimal working height for best results. Bringing your application head too close to the circuit board surface, or introducing too much fluid pressure on the coating, can create undesirable pattern results and entrap air in the coating as it hits the circuit board at high velocity.
PVA’s application engineering team can help you characterize your process parameters including atomizing air pressure, robot speed, valve height, and fluid pressure to assure you have optimized all settings based on our 30 years of experience.
For more information on how to keep bubbles out of your conformal coating process, contact PVA today and let us help make you a pro.