| 摘要 |
<p>A resilient flexible sanding sponge (20) including a foam backing layer (22) having a layer of abrasive particles (26) distributed along one of its major surfaces (24) that are adhered together and to the backing layer by a layer of flexible adhesive material. That high tear strength backing layer can either be (1) a layer of felted urethane foam; or (2) a layer of foam that encompasses a reinforcing material (30). When the backing layer is of felted urethane foam the layer of flexible adhesive material (28) can have a major structurally sound portion below the surface along which the layer of abrasive particles is positioned and a minor portion adhering the abrasive particles along that surface to leave large portions of the abrasive particles projecting above the layer of adhesive material where they can effectively abrade a surface over which the sanding sponge is rubbed.</p> |
