Abstract: A coated abrasive belt with an abrasive grain layer on one side of a flexible substrate. The substrate comprises a longitudinal strength layer (4, 5) and a transverse strength layer (6, 7). The edges of successive coated abrasive belt portions are adhesively bonded directly to one another by the use of a recess formed at least in the transverse strength layer. Adhesive bonding takes places one a connecting face (10) which runs approximately in the longitudinal direction and which reaches at least near to the longitudinal strength layer (4, 5). One of the two portions (2) carries the grain layer (14) on its longitudinal strength layer (4) and the other carries it on its transverse strength layer (7).

Abstract: An abrasive construction for modifying a surface of a workpiece, such as a semiconductor wafer. The abrasive construction comprises: a three-dimensional, textured, fixed abrasive element; at least one resilient element generally coextensive with the fixed abrasive element; and at least one rigid element generally coextensive with and interposed between the resilient element and the fixed abrasive element, wherein the rigid element has a Young's Modulus greater than that of the resilient element.

Abstract: A molded abrasive brush having a backing with a plurality of bristles extending therefrom. The backing and bristles are preferably integrally molded. The brush is molded from a moldable polymer such a thermoset polymer, thermoplastic polymer, or thermoplastic elastomer. The moldable polymer includes a plurality of organic or inorganic abrasive particles interspersed throughout at least the bristles, and can be interspersed throughout the brush. The moldable brush can include an attaching means molded integrally with the backing. Also disclosed is a method of making a molded abrasive brush and a method of refining a workpiece surface with a molded abrasive brush.

Abstract: According to the invention, it includes conductive pigments constituted by a substrate (chosen from the group including micas, talcum, kaolin, bentonites, montmorillionites or glass particles) which has a basic lamellar-type structure coated with an electroconductive layer of tin oxide doped with antimony. On at least one face, the sheet has a layer containing at least the conductive pigments having a basic lamellar-type structure and at least one hydrosoluble binder.Application as decorative paper for laminates.

Abstract: A polishing pad comprises at least a first layer having a first main surface serving to polish a substrate to be polished and a second main surface, and a second layer positioned to face the second main surface of the first layer and having fine bags arranged therein, fluid being hermetically sealed in the fine bag.

Abstract: An improved abrading disk tool for holding a multi-layer brush of stacked non-woven fibrous webs to be mounted on a rotation driving spindle in use, which tool can be easily assembled without using any adhesive, but using tool members which, preferably, may be injection-molded with a plastic material. The members of the tool include a pair of compatible holder halves (1), each having a base (10) and a central hollow pole (20) and/or a plurality of eccentrically arranged hollow and/or solid poles (30) axially extending from the base. The holder halves have corresponding configurations, preferably geometrically dimensionally equal ones. Each pole has snap detent means comprising a male element (40) and/or a female element (50), provided at its free end, which element is engageable with that of a corresponding pole in the counterpart holder half to axially inter-lock both the holder halves.

Abstract: A pad is provided for use on a machine for the polishing of silicon wafers which allows the use of optical detection of the wafer surface condition as the wafer is being polished. This accomplished by constructing the entire pad or a portion thereof out of a solid uniform polymer sheet with no intrinsic ability to absorb or transport slurry particles and which is transparent to the light beam being used to detect the wafer surface condition by optical methods. Polymers which are transparent to light having a wavelength within the range of 190 to 3500 nanometers are suitable for the construction of these pads.

Abstract: An improved star head sanding assembly for sanding on the peripheral edges of the individual abrasive discs. The discs are provided with radially arranged non-parallel skip cuts, and are devoid of radial cutout sections to provide maximum peripheral surface area. During use, the free edges of the individual fingers tend to twist through substantially a right angle to present a line contact with the workpiece surface at least partially perpendicular to the direction of movement of the assembly relative to the workpiece.

Abstract: A coated abrasive suitable for conditioning a freshly cast metal surface comprises a backing having a cyclic elongation at a temperature of 150.degree. C. of less than 3%.

Abstract: Described is a fiber reinforced abrasive polishing and finishing tool comprising:a multi layer laminate comprised of a first abrasive layer and a second abrasive layer, anda layer of B-staged adhesive resin matrix containing fiber reinforcing material, e.g. graphite between the abrasive layers wherein all of the layers are secured together at least in part by the adhesive resin.Also described is a method of manufacturing the tool by applying heat and pressure to a laminate of the adhesive and abrasive layers with the adhesive layer therebetween.

Abstract: A surface of a member having intrinsic projections thereon is polished to remove the intrinsic projections. An abrasive tape is formed of a substrate and an abrasive layer formed thereon. The abrasive layer primarily contains abrasive grains and a binder. The abrasive tape and the member are slid in substantially opposite directions with the abrasive layer and the surface of the member kept in contact with each other.

Abstract: A flexible cleaning pad for removing dry particles such as lint, dust and the like from surfaces such as clothing, upholstery and the like. The pad has a hand contacting sheet made of flexible material and an opposed cleaning sheet also made of flexible material. Both the hand contacting sheet and the cleaning sheet are adhesively fixed to an intermediate core sheet by an adhesive material. The core sheet is made of a substantially rigid yet bendable material presenting resilient properties. The adhesive material is chosen so as to also presents reselient properties. A strap extending across the hand contacting sheet allows the pad to be secured in the palm of the hand of an intended user. The core sheet provides structural rigidity to the pad while allowing the latter to be bended. The core sheet also allows the pad to spring back to a substantially flat configuration when no external force is applied to the pad.

Abstract: A polishing apparatus is provided which can effect surface-based polishing of a wafer without causing the wafer to produce an undulation or peripheral protrusion. A sheetlike polishing member 5 constructed by superposing a foam sheet 2 containing minute closed cells in a web of chloroprene rubber and a velour type non-woven fabric (polishing cloth 3) is attached fast to the surface of a polishing table 1. The polishing member is capable of polishing a given wafer while maintaining the uniformity of thickness of the wafer or an oxide film formed on the surface of the wafer because, during the application of pressure by a pressing member 14, the polishing pressure is uniformly distributed throughout the entire rear surface of the wafer and the polishing member is bent in conformity with the global rises and falls in the wafer surface.

Abstract: An abrasive flap brush including a central core, a layer of adhesive disposed on the peripheral surface of the core by a coater, and a plurality of abrasive flaps adhered to the core by the adhesive. The adhesive is uniformly distributed around the core by providing either the core or the adhesive coater with spacing projections that maintain a predetermined minimum distance between the coater and the core when the adhesive is applied. A coater including the spacing projections is also disclosed, as is a method for making an abrasive flap brush.

Abstract: A ring-shaped abrasive member is formed of a plurality of sheets of abrasive cloth paper laminated and bonded together. The abrasive member is formed with a plurality of cuts so as to extend inwardly from its outer edge or extend outwardly from its inner edge. On the back of the abrasive member is secured a wheel substrate together with adhesive. The abrasive member is pressed against a workpiece while rotating the abrasive member to abrade the workpiece. The powdery debris and abrasive grains trapped in the cuts will move toward the outer periphery of the abrasive member and be discharged from the outer ends of the cuts. When the topmost abrasive sheet forming the abrasive member gets worn out, the sheet thereunder will be exposed.

Abstract: The invention is directed to a semi-conductor wafer processing machine including an arm having a wafer carrier disposed at one end. The wafer carrier is rotatable with the rotating motion imparted to a semi-conductor wafer held thereon. In first embodiment, the machine further includes a rotatable polishing pad having an upper surface divided into a plurality of wedge-shaped sections, including an abrasion section and a polishing section. The abrasion section has a relatively rough texture and the polishing section has a relatively fine texture as compared to each other. In an alternative embodiment, the pad includes an underlayer and surface layer. The surface layer includes two sections of differing hardness, both of which are harder than the underlayer. Alternatively, the surface layer may include one relatively hard section, and the underlayer may include two sections, one of which has the same hardness as the surface layer and the other of which is softer than the surface layer.

Abstract: Coated abrasive materials can be made from a backing material and abrasive elements which comprise abrasive particles adhered to a rigid base material, said elements being rigidly adhered to the backing material in a predetermined pattern.

Abstract: Coated abrasive article comprising a backing bearing on at least one major surface thereof erodable agglomerates and abrasive grains, wherein the erodable agglomerates consist essentially of a grinding aid, and optionally, a binder. The erodable agglomerates can be above, between, or beneath the abrasive grains, or the erodable agglomerates can be above, between, and beneath the abrasive grains. The coated abrasive article of this invention utilizes a higher level of grinding aid than coated abrasive articles of the prior art.

Abstract: A pad for cleaning porcelain greenware comprising an abrasive sheet for contacting and cleaning porcelain greenware; a foam backing member; and a glue secured to the abrasive sheet and to the foam backing member for securing together the abrasive sheet and the foam backing member. A process or a method for wetcleaning porcelain greenware comprising the steps of: providing a porcelain greenware; providing a container with water; providing the pad; contacting the porcelain greenware and the pad with the water; and sliding the abrasive sheet against the porcelain greenware.

Abstract: A flexible sanding/deburring head adapted for driven rotation by a power tool is formed from a plurality of juxtaposed thin sheets of flexible abrasive material individually die cut to define a connecting portion having a mounting opening disposed centrally thereof and at least three projections connected to the connecting portion to extend generally radially of the mounting opening, wherein the projections are uniformly spaced annularly of the mounting opening and bound uniformly sized cut-out areas opening radially of the mounting opening and each projection is divided into parallel fingers having relatively inner ends connected to the connecting portion and relatively outer ends arranged to lie generally along arcs of a circle whose center is coincident with the center of the mounting opening. The projections are skip-cut to define the fingers.

Abstract: A technique for mounting polishing pads to a platen in chemi-mechanical polishing apparatus is disclosed. With two polishing pads, prior to assembly, a seal of material impervious to the chemical action of a polishing slurry is disposed about the perimeter of the interface between the pads. Preferably, the seal is a bead of silicon-based "gasket" material, such as General Electric silicon caulk (RTV) or Dow Corning silicon adhesive, and is disposed in a ring at a radius r' about one inch inward from the perimeter (circumference) of the pads. When the pads are assembled together, the bead squashes and (1) forms a seal, and (2) causes the periphery of the upper pad to curve upward--thereby creating a bowl-like reservoir for increasing the residence time of slurry on the face of the pad prior to overflowing the pad.

Abstract: An abrasive tape comprises a flexible substrate and an abrasive layer which is overlaid on the flexible substrate and which contains abrasive grains and a binder. The abrasive grains comprise first abrasive grains, which have a mean grain diameter falling within the range of 0.07 .mu.m to 0.40 .mu.m and a Mohs hardness falling within the range of 5 to 7, second abrasive grains, which have a mean grain diameter falling within the range of 0.20 .mu.m to 0.60 .mu.m and a Mohs hardness not lower than 8.5, and fine diamond grains, which have a mean grain diameter falling within the range of 0.5 .mu.m to 3.0 .mu.m. The abrasive tape is used during a polishing process on a laminated type of magnetic head, which is constituted of a nonmagnetic substrate, a magnetic material, and a glass bonding agent. The abrasive tape is suitable for the polishing of magnetic heads, which are to be used for high-density recording with the shortest recording wavelengths of approximately 0.8 .mu.

Abstract: An abrasive tool, such as a disc, which is adapted for ready attachment and release from the back-up pad of a sanding or polishing machine by means of a hook and loop means is improved by the interposition of a resilient foam layer between the abrasive-containing layer and the layer comprising the hook and loop attachment means.

Abstract: The invention relates to a polishing element for use in a system and apparatus and a method for finishing and polishing a dental composite restorative material in a tooth. The system of the invention uses an elastomeric polymer disc which is impregnated with an abrasive for reduction of the composite, and an element for polishing the composite as well as the dental materials. A method of using the above apparatus in a finishing/polishing system is also provided.

Abstract: A paint finishing pad adapted to be used on a drive assembly including a back up pad and a drive motor for rotating the back up pad. The paint finishing pad includes a layer of open cell polymeric foam having a front surface defined by a plurality of spaced projecting portions of the layer of foam, and loops projecting from a rear surface of the layer of foam for releasably attaching the paint finishing pad to a support surface on the back up pad.