Explaining Hook & Loop Sandpaper

There seems to be much confusion over the trademark VELCRO® when it comes to describing "Hook, and Loop" fastener backed sandpaper.
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VELCRO® is a registered trademark of Velcro BVBA, a company that produces hook and loop fasteners under the trademark VELCRO®. Velcro BVBA does not make or sell abrasive sanding products. ​
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For this reason, abrasive companies have registered their own names for the "Hook and Loop" fastening system. A few examples of these are sia Abrasives - Siafast® 3M, Hook-it®, Norton - Speed-Grip® and Velgrip®, KLINGSPOR Abrasives - Kling-On®, FESTOOL - StickFix®. Other manufacturers use more generic terms like Hermes Abrasives - "Vel" or "Velour backed" Sandpaper discs, sheets and rolls are all available with a Hook and Loop type fastening system. ​
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The "Loop" is on the backing of the sandpaper, whether that backing is paper, film, cloth or mesh. The "Hook" is on the back-up pad of an orbital or random orbital sander, the faceplate of a disc sander, the face of a sanding block, and the profiled shape of a profile sanding head to name a few examples. ​
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We hope this explanation helps to correct the misuse of the registered trademark VELCRO® amongst the community of sandpaper users using Hook and Loop type sandpaper.