
Does Powder Particle Size Really Matter in Your Powder Coating Machine?
Every painter knows their tools can only go so far—what’s in the gun matters just as much. That’s where powder particle size steps in. It’s a detail easily overlooked, but it can make or break how your powder coating machine performs.
How Does Particle Granularity Impact Coating Adhesion
The size of powder particles directly affects how well they stick to a surface. Smaller particles carry more surface area relative to their weight, so they cling more easily. This can lead to smoother coverage and fewer gaps. In contrast, larger particles may fall away before curing, especially on vertical or curved surfaces. A powder coating machine depends on that first layer sticking tight—if it doesn’t, nothing cures evenly.
However, it’s not just about sticking—it’s about staying put through the entire process. Fine powders embed into the surface better during pre-heating, especially if the part being coated has tight corners or hard-to-reach …
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