NEWS
Conformal coating, the final step in PCB manufacturing, shields valuable components. However, sometimes things get complicated. Imagine this common scenario:
Your design and testing went smoothly. During production spraying, translucent webs appear, engulfing taller components like a scene from "Arachnophobia." This is cobwebbing, often simple to fix despite its scary appearance.
In this article, we'll explore why cobwebbing happens and offer easy solutions to ensure flawless coating application.
Cobwebbing, colloquially known as spider webbing or cotton candy, occurs when coatings or adhesives dry prematurely during spraying. This happens because the solvent evaporates too quickly in midair, leaving strands resembling cobwebs.
Cobwebbing mainly occurs during spraying, especially atomized spraying. To avoid it, consider alternative methods like dip coating, encapsulation, or manual application with a brush.
Cobwebbing is a common issue but easily fixed. Slow drying with proper solvent usage or adjustments during spraying can eliminate it. For assistance in optimizing your process, contact us for unbiased evaluations and reliable solutions.
For further HumiSeal product details, feel free to get in touch with us today!
Resource link: https://blog.humiseal.com/coating-cobwebbing-help
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