How does electrostatic coating improve the manufacture of sandpaper?

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Angle grinder — abrasive Worker using an angle grinder to smooth a piece of metal.

Electrostatic coating significantly enhances the quality and performance of sandpaper during the manufacturing process. By using an electrostatic field, manufacturers can precisely orient the abrasive grains so that their sharpest ends face outward, which maximizes cutting efficiency.1

Furthermore, this method allows for precise control over the spacing of the abrasive grains on the backing material. By creating wider spacing between grains, the process helps prevent "loading"—a common issue where debris from soft, stringy, or gummy materials clogs the abrasive surface, thereby extending the tool's effective life and utility.1