The present invention relates generally to coated abrasive articles that include active filler particles in a supersize coat, a make coat, or combinations thereof, as well as methods of making and using said coated abrasive articles.

A flexible antistatic abrasive with a combined support consisting of a plastic film, on which binder resins are applied, consisting of a maker coat, on which the abrasive adheres, fixed by a size coat and if necessary coated with a third binder, in which the plastic support film is laminated with at least one reinforcement substratum or base support and in which all the components of the combined support are treated with materials designed to provide the support with antistatic properties. Other aspects are disclosed and claimed.

The present invention is a fixed-abrasive-grain wire including a core wire and abrasive grains fixed on a surface of the core wire, wherein an abrasive grain density is 1200 grains/mm.sup.2 or more, where the abrasive grain density is the number of the abrasive grains per unit area on the surface of the core wire, and 2% or less of all distances between centroids of the abrasive grains are equal to or shorter than an average circle equivalent diameter of the whole abrasive grains. There can be provided a fixed-abrasive-grain wire, a wire saw, and a method for slicing a workpiece that can suppress meandering of the fixed-abrasive-grain wire during slicing a workpiece and improve TTV and warp of wafers sliced from the workpiece.

A grinding wheel includes an elastomerically deformable supporting layer, at least a first metallic surface fastened to the elastomerically deformable supporting layer, the metalic surface being an elastically deformable metal foil and includes abrasive particles attached to the at least one metalic surface. The particles may include at least one of: cubic boron nitride or diamonds. The metal foil may have a thickness of less than 1 mm. The abrasive particles may be bonded galvanically on the metallic surface. The abrasive particles may be bonded on the metalic surface in a plurality of areas having regions without abrasive particles therebetween. The metal foil may be adhesively bonded onto the elastomerically deformable supporting layer. The elastomerically deformable supporting layer may be plastic foam. The elastomerically deformable supporting layer may be adhesively bonded onto a metallic supporting body.

A self-contained fibrous buffing article comprising at least one layer of a fibrous nonwoven fabric comprising lyocell fiber and having a hardened adherent coating comprising a crosslinked binder, abrasive particles, and a lubricant.

A coated abrasive article having a plurality of formed ceramic abrasive particles each having a surface feature. The plurality of formed ceramic abrasive particles attached to a flexible backing by a make coat comprising a resinous adhesive forming an abrasive layer. The surface feature having a specified z-direction rotational orientation, and the specified z-direction rotational orientation occurs more frequently in the abrasive layer than would occur by a random z-direction rotational orientation of the surface feature.

A coated abrasive article having a plurality of formed ceramic abrasive particles each having a surface feature. The plurality of formed ceramic abrasive particles attached to a flexible backing by a make coat comprising a resinous adhesive forming an abrasive layer. The surface feature having a specified z-direction rotational orientation, and the specified z-direction rotational orientation occurs more frequently in the abrasive layer than would occur by a random z-direction rotational orientation of the surface feature.

An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a polymer including a biaxially-oriented material. In an embodiment, the barrier layer may include a polymer-containing film as an exterior surface of the abrasive tool. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

A method for dry production of a sliding layer on a flexible backing, in particular a backing that includes a textile or an abrasive backing, includes at least the following. A binder, or more particularly an adhesive such as a hot-applied adhesive or a hotmelt, is applied to a flexible backing. The binder is applied in dry form, such as via scattering, and is joined to the backing via exposure to heat to form a sliding layer on the backing and to hold the sliding layer at least one of on and in the backing. A lubricant, or more particularly a lubricant that includes graphite or PTFE, is applied to at least one of the backing and the binder.

The disclosure herein relates to a method for preparing ceramic grains comprising: making a slurry comprising inorganic particles and a gelling agent; making droplets of the slurry; introducing the droplets in a liquid gelling-reaction medium wherein the droplets are gellified; deforming the droplets before, during or after gellification; drying the gellified deformed droplets, thereby obtaining dried grains and sintering the dried grains, thereby obtaining the ceramic grains.

The disclosure herein further relates to ceramic grains obtainable by a disclosed method.