WO2021074756A1 - Articles abrasifs enrobés et son procédé de fabrication - Google Patents

Articles abrasifs enrobés et son procédé de fabrication Download PDF

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Publication number
WO2021074756A1
WO2021074756A1 PCT/IB2020/059507 IB2020059507W WO2021074756A1 WO 2021074756 A1 WO2021074756 A1 WO 2021074756A1 IB 2020059507 W IB2020059507 W IB 2020059507W WO 2021074756 A1 WO2021074756 A1 WO 2021074756A1
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WO
WIPO (PCT)
Prior art keywords
abrasive
precisely
platelets
shaped
coated
Prior art date
Application number
PCT/IB2020/059507
Other languages
English (en)
Inventor
Yuyang LIU
Ann M. Hawkins
Geoffrey I. WILSON
Brian G. Koethe
Ernest L. Thurber
Negus B. Adefris
Junting LI
Fay T. Salmon
Original Assignee
3M Innovative Properties Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Priority to US17/765,709 priority Critical patent/US20220339761A1/en
Priority to CN202080071950.7A priority patent/CN114555296A/zh
Priority to EP20793815.0A priority patent/EP4045230B1/fr
Publication of WO2021074756A1 publication Critical patent/WO2021074756A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0072—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B24D11/005—Making abrasive webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
    • B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D2201/00—Bushings or mountings integral with the grinding wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D2203/00—Tool surfaces formed with a pattern

Definitions

  • the present disclosure broadly relates to coated abrasive articles and methods of making and using the same.
  • Coated abrasive articles comprise abrasive particles adhered to a backing by a material comprising a first crossbnked polymeric resin (commonly known as a make layer or make coat).
  • a second crossbnked polymeric resin (commonly known as a size layer or size coat) is disposed upon the make layer and abrasive particles.
  • a third layer (known as a supersize layer or supersize) is disposed upon the size layer. If present, the supersize typically contains grinding aid and/or antiloading components.
  • shaped abrasive particles e.g., triangular platelets
  • the shaped abrasive particles tip substantially from their original orientation before curing of the make layer precursor resin that forms the make layer.
  • the present disclosure provides a method of making a coated abrasive article, the method comprising sequential steps: a) providing a production tool comprising a carrier member having a dispensing surface having precisely-shaped cavities that extend into the carrier member from cavity openings at the dispensing surface; b) depositing precisely-shaped abrasive platelets into at least some of the precisely-shaped cavities; c) depositing diluent abrasive particles on the dispensing surface; d) contacting the precisely-shaped abrasive platelets and the diluent abrasive particles with a curable make layer precursor disposed on a major surface of a backing; e) optionally separating the tool from the precisely-shaped abrasive platelets and the diluent abrasive particles; and f) at least partially curing the curable make layer precursor to provide and at least partially cured make layer precursor.
  • the sequential steps further comprise: g) disposing a curable size layer precursor onto the at least partially cured make layer precursor, the precisely-shaped abrasive platelets, and the diluent abrasive particles; and h) at least partially curing the curable size layer precursor.
  • the present disclosure provides a coated abrasive article prepared according to the preceding method.
  • the present disclosure provides a coated abrasive article comprising: a backing having a first major surface; a make layer disposed on and secured to the backing; an abrasive layer contacting and secured to the make layer, wherein the abrasive layer comprises precisely-shaped abrasive platelets and diluent abrasive particles, wherein the precisely-shaped abrasive platelets comprise a second major surface disposed at a dihedral angle of less than or equal to 60 degrees relative to the first major surface of the backing, and wherein at least a majority of the precisely-shaped abrasive platelets each overhangs a respective plurality of the diluent abrasive particles; and a size layer disposed over the make layer and the abrasive layer.
  • the present disclosure provides a coated abrasive article comprising: a backing having a major surface; a make layer disposed on and secured to the backing; an abrasive layer contacting and secured to the make layer, wherein the abrasive layer comprises islands, each island comprising at least one precisely-shaped abrasive platelet and diluent abrasive particles, and wherein the islands are isolated one from another; and a size layer disposed over the make layer and the abrasive layer.
  • precisely-shaped abrasive platelets when used in reference to precisely- shaped abrasive platelets means that a longitudinal axis of each precisely-shaped abrasive particle is aligned similarly or identically relative to the longitudinal axis of the coated abrasive article (e.g., a coated abrasive belt).
  • a longitudinal axis of each precisely-shaped abrasive particle is aligned similarly or identically relative to a rotational axis of the coated abrasive article (e.g., a coated abrasive disk).
  • closed abrasive coat means that abrasive layer is tightly packed, with substantially no spaces between adjacent abrasive particles of sufficient size to deposit another abrasive particle of comparable size.
  • open abrasive coat means not a closed abrasive coat.
  • An open coat may be characterized by regions having few if any abrasive particles.
  • precise abrasive particle means that the abrasive particle will have a shape that is essentially the shape of the portion of the cavity of a mold or production tool in which the particle precursor was dried, prior to optional calcining, and then sintering.
  • the term “length” refers to the maximum dimension of an abrasive particle or cavity.
  • Width refers to the maximum dimension of the abrasive particle that is perpendicular to the length.
  • the terms “thickness” or “height” refer to the dimension of the precisely-shaped abrasive particle or cavity that is perpendicular to the length and width.
  • FIG. 1 is a schematic process flow diagram of an exemplary process 100 according to the present disclosure.
  • FIG. 2 is a schematic process flow diagram of an exemplary process 200 according to the present disclosure.
  • FIG. 3 is a schematic process flow diagram of an exemplary process 300 according to the present disclosure.
  • FIG. 4 is a schematic process flow diagram of an exemplary process 400 according to the present disclosure.
  • FIG. 5 is a schematic process flow diagram of an exemplary process 500 according to the present disclosure.
  • FIG. 6 is a schematic side view of an exemplary coated abrasive article 600 according to the present disclosure.
  • FIG. 7A is a schematic side view of an exemplary coated abrasive article 700 according to the present disclosure.
  • FIG. 7B is a schematic top view of an exemplary coated abrasive article 700 according to the present disclosure.
  • FIG. 8 is a schematic top view of an exemplary coated abrasive disc 800 according to the present disclosure.
  • FIGS. 9 A and 9B are optical micrographs of the coated abrasive article made in Example 1.
  • FIGS. 10A and 10B are optical micrographs of the coated abrasive article made in Comparative Example A.
  • FIGS. 11A and 1 IB are optical micrographs of the coated abrasive article made in Example 2.
  • FIGS. 12A and 12B are optical micrographs of the coated abrasive article made in Comparative Example B. Repeated use of reference characters in the specification and drawings is intended to represent the same or analogous features or elements of the disclosure. It should be understood that numerous other modifications and embodiments can be devised by those skilled in the art, which fall within the scope and spirit of the principles of the disclosure. The figures may not be drawn to scale.
  • one exemplary method 100 of making a coated abrasive article provides a production tool 110 comprising a carrier member 115 and a dispensing surface 112. Precisely-shaped cavities 120 extend from cavity openings 114 at the dispensing surface 112 and extend into carrier member 115.
  • Such tools are widely known and used in the production of coated abrasive articles and typically have the form of a metal roll, a polymeric sheet, a polymeric roll sleeve, or a polymeric belt.
  • precisely-shaped abrasive platelets 130 are disposed within the precisely-shaped cavities 120 thereby orienting them.
  • Diluent abrasive particles 140 are then disposed onto the dispensing surface 112 of the production tool 110.
  • the abrasive-particle-laden dispensing surface 112 of the production tool 110 is then contacted with a make layer precursor 150 disposed on a backing 160.
  • the make layer precursor 150 is sufficiently adherent that separation of the backing and make layer precursor combination from the dispensing surface 112 transfers the precisely-shaped abrasive platelets 130 and diluent abrasive particles 140 from the production tool 110 to the make layer precursor 150.
  • Subsequent (not shown) curing of the make layer precursor, and the application and curing of a size layer precursor results in a coated abrasive article (not shown).
  • exemplary method 200 (see FIG. 2) of making a coated abrasive article according to the present disclosure provides a production tool 210 comprising a carrier member 205 and a dispensing surface 212.
  • Precisely-shaped cavities 220 extend from cavity openings 214 at the dispensing surface 212 and extend into carrier member 205 at an incline.
  • precisely-shaped abrasive platelets 230 are disposed within the precisely-shaped cavities 220 thereby orienting them, in some preferred embodiments at an incline.
  • Diluent abrasive particles 240 are then disposed onto the dispensing surface 212 of the production tool 210 such that some of the diluent abrasive particles become lodged within the precisely-shaped cavities, accumulate on top of the dispensing surface.
  • the abrasive particle laden dispensing surface 212 of the production tool 210 is then contacted with a make layer precursor 250 disposed on a backing 260.
  • the make layer precursor 250 is sufficiently adherent that optional separation of the backing and make layer precursor combination from the dispensing surface 212 transfers the precisely-shaped abrasive platelets 230 and diluent abrasive particles 240 from the production tool 210 to the make layer precursor 250.
  • Subsequent (not shown) curing of the make layer precursor, and the application and curing of a size layer precursor results in a coated abrasive article (not shown).
  • exemplary method 300 of making a coated abrasive article provides a production tool 310.
  • Precisely-shaped cavities 320 have cavity openings 314.
  • Precisely-shaped abrasive platelets 330 are disposed within the precisely-shaped cavities 320.
  • Diluent abrasive particles 340 are then disposed into the cavities alongside the precisely-shaped abrasive platelets 330.
  • the precisely-shaped abrasive platelets 330 and diluent abrasive particles 340 are disposed adjacent one another. Subsequent (not shown) curing of the make layer precursor, and the application and curing of a size layer precursor results in a coated abrasive article (not shown).
  • exemplary method 400 of making a coated abrasive article provides a production tool 410.
  • Precisely- shaped cavities 420 have cavity openings 414.
  • Precisely-shaped abrasive platelets 430 are disposed within the precisely-shaped cavities 420 assisting in orienting them vertically.
  • Diluent abrasive particles 440 are then disposed into the cavities alongside the precisely-shaped abrasive platelets 430.
  • the precisely-shaped abrasive platelets 430 and diluent abrasive particles 440 are disposed adjacent one another. Subsequent (not shown) curing of the make layer precursor, and the application and curing of a size layer precursor results in a coated abrasive article (not shown).
  • exemplary method 500 of making a coated abrasive article provides a production tool 510.
  • Precisely- shaped cavities 520 have cavity openings 514.
  • Precisely-shaped abrasive platelets 530 are disposed within the precisely-shaped cavities 520 assisting in orienting them vertically.
  • Diluent abrasive particles 540 are then disposed into the cavities alongside the precisely-shaped abrasive platelets 530.
  • the precisely-shaped abrasive platelets 530 and diluent abrasive particles 540 are disposed adjacent one another. Subsequent (not shown) curing of the make layer precursor, and the application and curing of a size layer precursor results in a coated abrasive article (not shown).
  • the openings of the precisely-shaped cavities are arranged in a rectangular or rotationally symmetrical array, although this is not a requirement.
  • the cavities may be shaped as square pyramids, square frustopyramids, cones, or frustoconical cavities.
  • the openings of the cavities at the dispensing surface are rectangular; however, this is not a requirement.
  • the length, width, and depth of the cavities in the carrier member will generally be determined at least in part by the shape and size of the abrasive particles with which they are to be used.
  • the lengths of individual cavities are preferably 1.1 to 1.2 times the maximum length of a side of the precisely-shaped abrasive platelets
  • the widths of individual cavities are preferably from 1.1-2.5 times the thickness of the precisely-shaped abrasive platelets
  • the respective depths of the cavities should are preferably 1.0 to 1.2 times the width of the precisely-shaped abrasive platelets if they are to be wholly contained within the cavities, less if they are not.
  • larger dimensions may be useful, and with be apparent to those skilled in the art.
  • the lengths of individual cavities may preferably be less than that of an edge of the precisely-shaped abrasive platelets, and/or the respective depths of the cavities should be less than that of the width of the abrasive particles if the precisely-shaped abrasive platelets are to protrude from the cavities.
  • the width of the cavities should be selected such that a single abrasive particle fits within each one of the cavities.
  • the width of the cavities should be selected such that at least a single precisely-shaped abrasive particle fits within each one of the cavities.
  • the cavity openings may be angled and offset from adjacent openings.
  • the carrier member can be in the form of, for example, an endless belt, a sheet, a continuous sheet or web, a coating roll, a sleeve mounted on a coating roll, or die. If the production tool is in the form of a belt, sheet, web, or sleeve, it will have a contacting surface and a non-contacting surface. If the production tool is in the form of a roll, it will have a contacting surface only.
  • the carrier member can be made, for example, according to the following procedure.
  • a master tool is first provided.
  • the master tool is typically made from, or plated with, metal, e.g., nickel.
  • the master tool can be fabricated by any conventional technique, such as, for example, engraving, hobbing, knurling, electroforming, diamond turning, or laser machining. If a pattern is desired on the surface of the production tool, the master tool should have the inverse of the pattern for the production tool on the surface thereof.
  • the thermoplastic material can be embossed with the master tool to form the pattern. Embossing can be conducted while the thermoplastic material is in a flowable state. After being embossed, the thermoplastic material can be cooled to bring about solidification.
  • the carrier member may also be formed by embossing a pattern into an already formed polymer film softened by heating.
  • the film thickness may be less than the cavity depth. This is advantageous in improving the flexibility of carriers having deep cavities.
  • the carrier member comprises metal and/or organic polymer.
  • organic polymers are preferably moldable, have low cost, and are reasonably durable when used in the abrasive particle deposition process of the present disclosure.
  • organic polymers which may be thermosetting and/or thermoplastic, that may be suitable for fabricating the carrier member include: polypropylene, polyethylene, vulcanized rubber, polycarbonates, polyamides, acrylonitrile-butadiene-styrene plastic (ABS), polyethylene terephthalate (PET), polybutylene terephthalate (PET), polyimides, polyetheretherketone (PEEK), polyetherketone (PEK), and polyoxymethylene plastic (POM, acetal), poly(ether sulfone), poly(methyl methacrylate), polyurethanes, polyvinyl chloride, and combinations thereof.
  • ABS acrylonitrile-butadiene-styrene plastic
  • PET polyethylene terephthalate
  • PET polybutylene tere
  • the carrier member can also be made of a cured thermosetting resin.
  • a production tool made of thermosetting material can be made according to the following procedure. An uncured thermosetting resin is applied to a master tool of the type described previously. While the uncured resin is on the surface of the master tool, it can be cured or polymerized by heating such that it will set to have the inverse shape of the pattern of the surface of the master tool. Then, the cured thermosetting resin is removed from the surface of the master tool.
  • the production tool can be made of a cured radiation curable resin, such as, for example acrylated urethane oligomers. Radiation cured production tools are made in the same manner as production tools made of thermosetting resin, with the exception that curing is conducted by means of exposure to radiation (e.g., ultraviolet radiation).
  • the carrier member may have any thickness as long as it has sufficient depth to accommodate the abrasive particles and sufficient flexibility and durability for use in manufacturing processes. If the carrier member comprises an endless belt, then carrier member thicknesses of from about 0.5 to about 10 millimeters are typically useful; however, this is not a requirement.
  • a resilient compressible layer may be secured to the non-dispensing surface of the carrier member, regardless of whether the cavities extend through to the back surface. This may facilitate web handling and/or abrasive particle removal from the cavities.
  • the resilient compressible layer comprises shaped recesses aligned in registration with the respective second opening of each one of at least a portion of the cavities abrasive particles in the cavities that extend into the shaped recesses may be mechanically urged out of the cavities by pressure applied against the resilient compressible layer. This may occur, for example, by compression at a nip roll where the abrasive particle positioning system contacts a make coat precursor on a backing during manufacture of coated abrasive articles.
  • the resilient compressible layer may have any thickness, with the specific choice of abrasive particles and equipment condition determining the selection of thickness, composition, and/or durometer. If the resilient compressible layer comprises an endless belt, then resilient compressible layer thicknesses of from about 1 to about 25 millimeters are typically useful, but this is not a requirement.
  • Exemplary materials suitable for the resilient compressible layers include elastic foams (e.g., polyurethane foams), rubbers, silicones, and combinations thereof.
  • the pattern of the contacting surface of the production tool will generally be characterized by a plurality of cavities or recesses.
  • the opening of these cavities can have any shape, regular or irregular, such as, for example, a rectangle, semi-circle, circle, triangle, square, hexagon, or octagon.
  • the walls of the cavities can be vertical or tapered.
  • the pattern formed by the cavities can be arranged according to a predetermined plan or can be random.
  • the cavities can butt up against one another.
  • the cavities can be separated from each other by distance (e.g., at least 0.1 mm, at least 0.2 mm, at least 0.3 mm, at least 0.4 mm, at least 0.5 mm, at least 1 mm, at least 2 mm, at least 3 mm, at least 4 mm, or even at least 5 mm).
  • the orientation and any incline of the cavities will be chosen such that the finished coated abrasive will have the precisely-shaped abrasive platelets aligned such that the abrading performance will be substantially optimized for its intended use.
  • the abrasive particles e.g., the precisely-shaped abrasive platelets and diluent abrasive particles
  • the abrasive particles have sufficient hardness and surface roughness to function as abrasive particles in abrading processes.
  • Abrasive particles may include organic and/or inorganic particles.
  • suitable inorganic abrasive particles include: fused aluminum oxide; heat-treated aluminum oxide; white fused aluminum oxide; ceramic aluminum oxide materials such as those commercially available under the trade designation 3M CERAMIC ABRASIVE GRAIN from 3M Company, St. Paul, MN; brown aluminum oxide; blue aluminum oxide; silicon carbide (including green silicon carbide); titanium diboride; boron carbide; tungsten carbide; garnet; titanium carbide; diamond; cubic boron nitride; garnet; fused alumina zirconia; iron oxide; chromia; zirconia; titania; tin oxide; quartz; feldspar; flint; emery; sol-gel-derived abrasive particles (e.g., including both precisely-shaped and crushed forms); and combinations thereof.
  • 3M CERAMIC ABRASIVE GRAIN from 3M Company, St. Paul, MN
  • brown aluminum oxide blue aluminum oxide
  • silicon carbide including green silicon carbide
  • titanium diboride boro
  • the abrasive particles (especially precisely-shaped abrasive platelets) comprise sol- gel-derived alpha-alumina particles.
  • Abrasive particles composed of crystallites of alpha-alumina, magnesium alumina spinel, and a rare earth hexagonal aluminate may be prepared using sol-gel precursor alpha alumina particles according to methods described in, for example, U.S. Pat. No. 5,213,591 (Celikkaya et al.) and U.S. Publ. Pat.
  • Alpha-alumina-based precisely-shaped abrasive particles can be made according to a well-known multistep processes. Briefly, the method comprises the steps of making either a seeded or non-seeded sol- gel alpha-alumina precursor dispersion that can be converted into alpha-alumina; filling one or more mold cavities having the desired outer shape of the precisely-shaped abrasive particle with the sol-gel, drying the sol-gel to form precursor precisely-shaped ceramic abrasive particles; removing the precursor precisely-shaped ceramic abrasive particles from the mold cavities; calcining the precursor precisely- shaped ceramic abrasive particles to form calcined, precursor precisely-shaped ceramic abrasive particles, and then sintering the calcined, precursor precisely-shaped ceramic abrasive particles to form precisely- shaped ceramic abrasive particles.
  • sol-gel-derived precisely-shaped alpha-alumina (i.e., ceramic) abrasive particles can be found in U. S. Pat. Nos. 5,201,916 (Berg); 5,366,523 (Rowenhorst (Re 35,570)); 5,984,988 (Berg); 8,142,531 (Adefris et al.); 8,142,891 (Culler et al.); and 8,142,532 (Erickson et al.); and in U.S. Pat. Appl. Publ. Nos. 2012/0227333 (Adefris et al.); 2013/0040537 (Schwabel et al.); and 2013/0125477 (Adefris).
  • the base and the top of the precisely-shaped abrasive particles are substantially parallel, resulting in prismatic or truncated pyramidal shapes, although this is not a requirement.
  • the sides of a truncated trigonal pyramid have equal dimensions and form dihedral angles with the base of about 82 degrees.
  • dihedral angles including 90 degrees
  • the dihedral angle between the base and each of the sides may independently range from 45 to 90 degrees, typically 70 to 90 degrees, more typically 75 to 85 degrees.
  • Suitable organic abrasive particles may be formed from a thermoplastic polymer and/or a thermosetting polymer.
  • Organic abrasive particles can be formed from a thermoplastic material such as polycarbonate, polyetherimide, polyester, polyvinyl chloride (PVC), polymethacrylate, polymethylmethacrylate, polyethylene, polysulfone, polystyrene, acrylonitrile- butadiene-styrene block copolymer, polypropylene, acetal polymers, polyurethanes, polyamide, and combinations thereof.
  • the organic abrasive particle may be a mixture of a thermoplastic polymer and a thermosetting polymer.
  • Other suitable organic abrasive particles include natural products such as nut shells.
  • the abrasive particles could comprise abrasive agglomerates such, for example, as those described in U.S. Pat. Nos. 4,652,275 (Bloecher et al.), 4,799,939 (Bloecher et al.), 6,521,004 (Culler et al.), or 6,881,483 (McArdle et al.). It is further contemplated that the abrasive particles could comprise precisely-shaped polymeric particles which comprise an organic binder and optional abrasive particles, such as those described in US 5,714,259 (Holmes et al.).
  • shaped abrasive composites of abrasive particles in a binder matrix such as those described in U.S. Pat. No. 5,152,917 (Pieper et al.). Many such abrasive particles, agglomerates, and composites are known in the art.
  • the abrasive particles may be surface-treated with a coupling agent (e.g., an organosilane coupling agent) or other physical treatment (e.g., iron oxide or titanium oxide) to enhance adhesion of the abrasive particles to the binder.
  • a coupling agent e.g., an organosilane coupling agent
  • other physical treatment e.g., iron oxide or titanium oxide
  • the abrasive particles may be treated before combining them with the binder, or they may be surface treated in situ by including a coupling agent to the binder.
  • the abrasive particles have a Mohs hardness of at least 4, at least 5, at least 6, at least 7, or even at least 8.
  • the abrasive particles comprise shaped ceramic abrasive particles (e.g., shaped sol-gel-derived polycrystalline alpha alumina particles) that are generally triangularly- shaped (e.g., a triangular prism or a truncated three-sided pyramid).
  • the abrasive particles are typically selected to have a length in a range of from 1 micron to 4 millimeters, more typically 10 microns to about 3 millimeter, and still more typically from 150 to 2600 microns, although other lengths may also be used.
  • the abrasive particles are typically selected to have a width in a range of from 0.1 micron to 3500 microns, more typically 100 microns to 3000 microns, and more typically 100 microns to 2600 microns, although other lengths may also be used.
  • the abrasive particles are typically selected to have a thickness in a range of from 0.1 micron to 1600 microns, more typically from 1 micron to 1200 microns, although other thicknesses may be used.
  • the abrasive particles may have an aspect ratio (length to thickness) of at least 2, 3, 4, 5, 6, or more.
  • Surface coatings on the abrasive particles may be used to improve the adhesion between the shaped ceramic abrasive particles and the binder in coated abrasive articles, or can be used to aid in electrostatic deposition of the shaped ceramic abrasive particles.
  • surface coatings as described in U.S. Pat. No. 5,352,254 (Celikkaya) in an amount of 0.1 to 2 percent surface coating to abrasive particle weight may be used. Such surface coatings are described in U.S. Pat. Nos.
  • the surface coating may prevent the shaped abrasive particle from capping. Capping is the welded to the tops of the shaped ceramic abrasive particles. Surface coatings to perform the above functions are known to those of skill in the art.
  • the abrasive particles may be independently sized according to an abrasives industry recognized specified nominal grade.
  • Exemplary abrasive industry recognized grading standards include those promulgated by ANSI (American National Standards Institute), FEPA (Federation of European Producers of Abrasives), and JIS (Japanese Industrial Standard).
  • ANSI grade designations include, for example: ANSI 4, ANSI 6, ANSI 8, ANSI 16, ANSI 24, ANSI 36, ANSI 46, ANSI 54, ANSI 60, ANSI 70, ANSI 80, ANSI 90, ANSI 100, ANSI 120, ANSI 150, ANSI 180, ANSI 220, ANSI 240, ANSI 280, ANSI 320, ANSI 360, ANSI 400, and ANSI 600.
  • FEPA grade designations include F4, F5, F6, F7, F8, F10, F12, F14, F16, F16, F20, F22, F24, F30, F36, F40, F46, F54, F60, F70 ; F80, F90, F100, F120, F150, F180, F220, F230, F240, F280, F320, F360, F400, F500, F600, F800,
  • JIS grade designations include JIS8, JIS 12, JIS 16, JIS24, JIS36, JIS46, JIS54, JIS60, JIS80, JIS100, JIS150, JIS180, JIS220, JIS240, JIS280, JIS320, JIS360, JIS400, JIS600, JIS800, JIS1000, JIS 1500, JIS2500, JIS4000, JIS6000, JIS8000, and JIS10,000
  • the average diameter of the abrasive particles may be within a range of from 260 to 4000 microns in accordance with FEPA grades F60 to F24.
  • the abrasive particles can be graded to a nominal screened grade using U.S.A. Standard Test Sieves conforming to ASTM El 1-17 "Standard Specification for Woven Wire Test Sieve Cloth and Test Sieves".
  • ASTM Ell-17 prescribes the requirements for the design and construction of testing sieves using a medium of woven wire cloth mounted in a frame for the classification of materials according to a designated particle size.
  • a typical designation may be represented as -18+20 meaning that the abrasive particles pass through a test sieve meeting ASTM E 11 - 17 specifications for the number 18 sieve and are retained on a test sieve meeting ASTM Ell-17 specifications for the number 20 sieve.
  • the abrasive particles have a particle size such that most of the particles pass through an 18 mesh test sieve and can be retained on a 20, 25, 30, 35, 40, 45, or 50 mesh test sieve.
  • the abrasive particles can have a nominal screened grade of: -18+20, -20/+25, -25+30, -30+35, -35+40, 5 -40+45, -45+50, -50+60, -60+70, -70/+80, -80+100, -100+120, -120+140, -140+170, -170+200, -200+230, -230+270, -270+325, -325+400, -400+450, -450+500, or -500+635.
  • a custom mesh size can be used such as -90+100.
  • the precisely-shaped abrasive particles may be deposited into cavities by any suitable method including, for example, dropping and/or wiping, preferably with vibration of the production tool or an air assist.
  • an excess of precisely-shaped abrasive particles is deposited onto the dispensing surface by an abrasive particle feeder such that there are more precisely-shaped abrasive particles present per unit length of the production tool cavities present.
  • Supplying an excess of precisely-shaped abrasive particles helps to ensure substantially all cavities within the production tool are eventually fdled with a precisely-shaped abrasive particle. Since the bearing area and spacing of the precisely-shaped abrasive particles is often designed into the production tooling for the specific grinding application it is desirable to not have too many unfilled cavities.
  • the abrasive particle feeder is typically the same width as the production tool (especially if the production tool comprises a roll, roll sleeve, or endless belt, and supplies precisely-shaped abrasive particles across the entire width of the production tool.
  • the abrasive particle feeder can be, for example, a vibratory feeder, a hopper, a chute, a silo, a drop coater, or a screw feeder.
  • a filling assist member is provided after the abrasive particle feeder to move the precisely-shaped abrasive particles around on the surface of the production tool and to help orientate or slide the precisely-shaped abrasive particles into the cavities.
  • the filling assist member can be, for example, a doctor blade, a felt wiper, a brush having a plurality of bristles, a vibration system, a blower or air knife, a vacuum box, or combinations thereof.
  • the filling assist member moves, translates, sucks, or agitates the precisely-shaped abrasive particles on the dispensing surface to place more precisely-shaped abrasive particles into the cavities. Without the filling assist member, generally at least some of precisely-shaped abrasive particles dropped onto the dispensing surface will fall directly into a cavity and no further movement is required but others may need some additional movement to be directed into a cavity.
  • the filling assist member can be oscillated laterally in the cross machine direction or otherwise have a relative motion such as circular or oval to the surface of the production tool using a suitable drive to assist in completely filling each cavity in the production tool with an abrasive particle.
  • the bristles may cover a section of the dispensing surface from 2 - 4 inches (5.0 - 10.2 cm) in length in the machine direction preferably across all or most all of the width of the dispensing surface, and lightly rest on or just above the dispensing surface, and be of a moderate flexibility.
  • a vacuum box if used as the filling assist member, is often used in conjunction with a production tool having cavities extending completely through the production tooling; however, even a production tool having a solid back surface can be an advantage since it will flatten and draw the production tooling more planar for improved filling of the cavities.
  • the belt can have a positive incline to advance to a higher elevation as it moves past the abrasive particle feeder.
  • the abrasive particle feeder can be positioned such that it applies the abrasive particles to the roll before top dead center of the roll’s outer circumference such as between 270 degrees to 350 degrees on the face of the roll with top dead center being 0 degrees as one progresses clockwise about the roll with the roll turning in a clockwise in operation.
  • an abrasive particle removal member can be provided to assist in removing the excess precisely-shaped abrasive particles from the surface of the production tooling once most or all of the cavities have been filled by an abrasive particle.
  • the abrasive particle removal member can be, for example, a source of air to blow the excess precisely-shaped abrasive particles off the dispensing surface of the production tooling such as an air wand, air shower, air knife, a coanda effect nozzle, or a blower.
  • a contacting device can be used as the abrasive particle removal member such as a brush, a scraper, a wiper, or a doctor blade.
  • a vibrator, such as an ultrasonic hom can be used as the abrasive particle removal member.
  • a vacuum source such as vacuum box or vacuum roll located along a portion of the first web path after an abrasive particle feeder with a production tool having cavities extending completely through the production tool can be used to hold the precisely-shaped abrasive particles in the cavities.
  • the dispensing surface of the production tool can be inverted or have a large incline or decline approaching or exceeding 90 degrees to remove the excess precisely-shaped abrasive particles using the force of gravity to slide or drop them from the dispensing surface while retaining the precisely-shaped abrasive particles disposed in the cavities by vacuum until the dispensing surface is returned to an orientation to keep the precisely-shaped abrasive particles in the cavities due to the force of gravity or they are released from the cavities onto the resin coated backing.
  • the abrasive particle removal member can slide the excess precisely-shaped abrasive particles across the dispensing surface of the production tooling and off of the production tool without disturbing the precisely-shaped abrasive particles contained within the cavities.
  • the removed excess precisely- shaped abrasive particles can be collected and returned to the abrasive particle feeder for reuse.
  • the excess precisely-shaped abrasive particles can alternatively be moved in a direction opposite to the direction of travel of the production tool past or towards the abrasive particle feeder where they may fill unoccupied cavities.
  • the diluent abrasive particles may be applied by any suitable means that does not dislodge the precisely-shaped abrasive particles from the cavities; however, it is permissible that diluent abrasive particles may also become lodged in the cavities along with the precisely-shaped abrasive particles.
  • the diluent abrasive particles may be applied using an abrasive feeder.
  • the abrasive particle feeder can be, for example, a vibratory feeder, a hopper, a chute, a silo, a drop coater, or a screw feeder.
  • One preferred deposition method is drop coating.
  • An abrasive particle removal member (e.g., as discussed above) can be used to assist in removing excess diluent abrasive particles from the surface of the production tooling.
  • the diluent abrasive particles have minimum average dimensions (e.g. average particle diameter) that are smaller than the longest dimensions of the precisely-shaped abrasive platelets.
  • the ratio of the average particle diameter of the diluent abrasive particles o the average longest dimension of the precisely-shaped abrasive platelets may be less than 1/2, less than 1/3, less than 1/4, less than 1/5, less than 1/6, or even less thanl/8, however, this is not a requirement.
  • grinding aid particles may be deposited with the diluent abrasive particles using a simultaneous or sequential procedure.
  • Useful grinding aids include cryolite, fluoroborates (e.g., potassium tetrafluoroborate), metal salts of fatty acids (e.g., zinc stearate or calcium stearate), salts of phosphate esters (e.g., potassium behenyl phosphate), phosphate esters, urea-formaldehyde resins, mineral oils, crosslinked silanes, crosslinked silicones, and/or fluorochemicals.
  • fluoroborates e.g., potassium tetrafluoroborate
  • metal salts of fatty acids e.g., zinc stearate or calcium stearate
  • salts of phosphate esters e.g., potassium behenyl phosphate
  • phosphate esters e.g., potassium behenyl phosphate
  • the diluent abrasive particles Once the diluent abrasive particles have been deposited (as an open coat, closed coat, or patterned coat) on the dispensing surface of the production tool, it is brought into contact with a make layer precursor disposed on a backing. Once in contact, the abrasive particles adhere to the make layer precursor and remain attached to it after the backing and make layer precursor are optionally separated from the production tool.
  • At least a majority e.g., at least 50 percent, at least 60 percent, at least 70 percent, at least 80 percent, or even at least 90 percent
  • at least a majority e.g., at least 50 percent, at least 60 percent, at least 70 percent, at least 80 percent, or even at least 90 percent
  • the various methods include, for example: gravity assist where the production tool and dispensing surface is inverted so that the abrasive particles fall out of the cavities under the force of gravity onto the make layer precursor; pushing assist wherein each cavity in the production tooling has two open ends such that the abrasive particle can reside in the cavity with a portion of the abrasive particle extending past the back surface of the production tooling; vibration assist where the abrasive particle transfer roll or production tooling is vibrated by a suitable source such as an ultrasonic device to shake the abrasive particles out of the cavities and onto the resin coated backing; and pressure assist where each cavity in the production tooling has two open ends or the back surface or the entire production tool is suitably porous and the abrasive particle transfer roll has a plurality of apertures and an internal pressurized source of air.
  • gravity assist where the production tool and dispensing surface is inverted so that the abrasive particles fall out of the cavities under the force of gravity onto the make layer precursor
  • pushing assist wherein
  • the make layer precursor is then at least partially cured (at least an amount sufficient to secure the abrasive particles for further handling) to form a make layer. Thereafter, the make layer and abrasive particles are overcoated with a size layer precursor, which is then at least partially cured (at least an amount sufficient to secure the abrasive particles for intended abrading processes).
  • a size layer precursor which is then at least partially cured (at least an amount sufficient to secure the abrasive particles for intended abrading processes).
  • other processing steps known to those of skill in the art of making coated abrasive articles are also known to those of skill in the art of making coated abrasive articles.
  • the make layer precursor, optional size layer precursor, and optional supersize layer can be coated using conventional techniques such as, for example, gravure coating, curtain coating, knife coating, spray coatings, roll-coating, reverse roll gravure coating, or bar coating.
  • Exemplary backings include those known in the art for making coated abrasive articles, including conventional sealed coated abrasive backings and porous non-sealed backings. Typically, the backing has two opposed major surfaces, although this is not a requirement.
  • the thickness of the backing generally ranges from about 0.02 to about 5 millimeters, desirably from about 0.05 to about 2.5 millimeters, and more desirably from about 0.1 to about 0.4 millimeter, although thicknesses outside of these ranges may also be useful.
  • the backing may be flexible or rigid. Desirably the backing is flexible.
  • Exemplary backings include polymeric film (including primed films) such as polyolefin film (e.g., polypropylene including biaxially oriented polypropylene, polyester film, polyamide film, cellulose ester film), metal foil, mesh, foam (e.g., natural sponge material or polyurethane foam), cloth (e.g., cloth made from fibers or yams comprising polyester, nylon, silk, cotton, and/or rayon), paper, vulcanized paper, vulcanized fiber, nonwoven materials, combinations thereof, and treated versions thereof.
  • Cloth backings may be woven, knitted, or stitch bonded, for example.
  • the backing may also be a laminate of two materials (e.g., paper/film, cloth/paper, film/cloth).
  • the backing may be treated to include a presize (i.e., a barrier coat overlying the major surface of the backing onto which the abrasive layer is applied), a backsize (i.e., a barrier coat overlying the major surface of the backing opposite the major surface on which the abrasive layer is applied), a saturant (i.e., a barrier coat that is coated on all exposed surfaces of the backing), or a combination thereof.
  • a presize i.e., a barrier coat overlying the major surface of the backing onto which the abrasive layer is applied
  • a backsize i.e., a barrier coat overlying the major surface of the backing opposite the major surface on which the abrasive layer is applied
  • a saturant i.e., a barrier coat that is coated on all exposed surfaces of the backing
  • Useful presize, backsize, and saturant compositions include glue, phenolic resins, lattices, epoxy resins, urea- formaldehyde, urethane, melamine-formaldehyde, neoprene rubber, butyl acrylate, styrol, starch, and combinations thereof.
  • Other optional layers known in the art may also be used (e.g., a tie layer; see, e.g., U. S. Pat. No. 5,700,302 (Stoetzel et al.)).
  • Backing treatments may contain additional additives such as, for example, a fdler and/or an antistatic material (for example, carbon black particles, vanadium pentoxide particles).
  • an antistatic material for example, carbon black particles, vanadium pentoxide particles.
  • the addition of an antistatic material can reduce the tendency of the coated abrasive article to accumulate static electricity when sanding wood or wood-like materials. Additional details regarding antistatic backings and backing treatments can be found in, for example, U. S. Pat. Nos. 5,108,463 (Buchanan et al.); 5,137,542 (Buchanan et al.); 5,328,716 (Buchanan); and 5,560,753 (Buchanan et al.).
  • At least one major surface of the backing is smooth (for example, to serve as the first major surface).
  • the second major surface of the backing may comprise a slip resistant or frictional coating.
  • coatings include an inorganic particulate (e.g., calcium carbonate or quartz) dispersed in an adhesive.
  • the backing may contain various additive(s).
  • suitable additives include colorants, processing aids, reinforcing fibers, heat stabilizers, UV stabilizers, and antioxidants.
  • useful fillers include clays, calcium carbonate, glass beads, talc, clays, mica, wood flour; and carbon black.
  • the backing may be a fibrous reinforced thermoplastic such as described, for example, as described, for example, in U. S. Pat. No. 5,417,726 (Stout et al.), or an endless spliceless belt, for example, as described, for example, in U. S. Pat. No. 5,573,619 (Benedict et al.).
  • the backing may be a polymeric substrate having hooking stems projecting therefrom such as that described, for example, in U. S. Pat. No. 5,505,747 (Chesley et al.).
  • the backing may be a loop fabric such as that described, for example, in U. S. Pat. No. 5,565,011 (Follett et al.)
  • the make layer precursor and the size layer precursor include respective curable binder precursor compositions, which may be the same or different.
  • curable binder precursor compositions for use in the make and/or size layer precursors include phenolic resins, urea-formaldehyde resins, acrylate resins, urethane resins, epoxy resins, aminoplast resins, and combinations thereof.
  • the curable binder precursor compositions can also include various additives including, for example, plasticizers, fillers, fibers, lubricants, surfactants, wetting agents, dyes, pigments, antifoaming agents, dyes, coupling agents, plasticizers, and suspending agents, for example.
  • an appropriate curative may be added to facilitate curing.
  • Such curatives will be readily apparent to those of skill in the art, and may be thermally activated, photochemically activated, or both, for example.
  • a supersize layer may be applied to at least a portion of the size layer.
  • the supersize typically includes grinding aids and/or anti-loading materials.
  • the optional supersize layer may serve to prevent or reduce the accumulation of swarf (the material abraded from a workpiece) between abrasive particles, which can dramatically reduce the cutting ability of the coated abrasive belt.
  • Useful supersize layers typically include a grinding aid such as cryolite, tetrafluoroborates, (e.g., potassium tetrafluoroborate), metal salts of fatty acids (e.g., zinc stearate or calcium stearate), salts of phosphate esters (e.g., potassium behenyl phosphate), phosphate esters, urea-formaldehyde resins, mineral oils, crosslinked silanes, crosslinked silicones, and/or fluorochemicals.
  • a grinding aid such as cryolite, tetrafluoroborates, (e.g., potassium tetrafluoroborate), metal salts of fatty acids (e.g., zinc stearate or calcium stearate), salts of phosphate esters (e.g., potassium behenyl phosphate), phosphate esters, urea-formaldehyde resins, mineral oils, crosslinked silanes, crosslinked silicones, and/
  • the amount of grinding aid incorporated into coated abrasive products is about 50 to about 400 gsm, more typically about 80 to about 300 gsm.
  • the supersize may contain a binder such as for example, those used to prepare the size or make layer, but it need not have any binder.
  • coated abrasive belts comprising an abrasive layer secured to a backing, wherein the abrasive layer comprises abrasive particles and make, size, and optional supersize layers are well known, and may be found, for example, in U. S. Pat. Nos.
  • Coated abrasive belts according to the present disclosure are useful for abrading a workpiece.
  • Preferred workpieces include metal (e.g., aluminum, nickel alloys, stainless steel, mild steel), composites, plastics, and wood.
  • the make layer precursor, optional size layer precursor, and optional supersize layer can be coated using conventional techniques such as, for example, gravure coating, curtain coating, knife coating, spray coatings, roll-coating, reverse roll gravure coating, or bar coating.
  • coated abrasive article 600 comprises backing 610 having a major surface 612.
  • Make layer 630 is disposed on and secured to the backing 610.
  • Abrasive layer 620 contacts and is secured to make layer 630.
  • Abrasive layer 620 comprises precisely- shaped abrasive platelets 632 and diluent abrasive particles 624.
  • Precisely-shaped abrasive platelets 622 are disposed at a dihedral angle b of less than or equal to 60 degrees relative to major surface 612 of backing 610.
  • At least a majority (e.g., at least 50 percent, at least 60 percent, at least 70 percent, at least 80 percent, or even at least 90 percent) of the precisely-shaped abrasive platelets 632 each overhangs a respective plurality of diluent abrasive particles 624.
  • Size layer 670 is disposed over make layer 630 and abrasive layer 620.
  • coated abrasive article 700 comprises coated abrasive article 700 comprises backing 710 having a major surface 712.
  • Make layer 730 is disposed on and secured to backing 710.
  • Abrasive layer 720 contacts and is secured to make layer 730.
  • Abrasive layer 720 comprises islands 725. Each island 725 comprises at least one precisely-shaped abrasive platelet 722 and diluent abrasive particles 724. Islands 725 are isolated one from another.
  • Size layer 770 is disposed over make layer 730 and abrasive layer 720. Precisely-shaped abrasive platelets 722 are commonly aligned with respect to a longitudinal axis 790 of coated abrasive article 700.
  • a coated abrasive article 800 e.g., a coated abrasive disc shown in FIG. 8
  • the precisely-shaped abrasive platelets 822 are commonly aligned with respect to a rotational axis (875, perpendicular to the page) of coated abrasive article 800.
  • Coated abrasive articles according to the present invention are useful for abrading a workpiece.
  • One such method includes frictionally contacting at least a portion of the abrasive layer of a coated abrasive article with at least a portion of a surface of the workpiece, and moving at least one of the coated abrasive article or the workpiece relative to the other to abrade at least a portion of the surface.
  • workpiece materials include metal, metal alloys, exotic metal alloys, ceramics, glass, wood, wood-like materials, composites, painted surfaces, plastics, reinforced plastics, stone, and/or combinations thereof.
  • the workpiece may be flat or have a shape or contour associated with it.
  • Exemplary workpieces include metal components, plastic components, particleboard, camshafts, crankshafts, furniture, and turbine blades.
  • Coated abrasive articles according to the present invention may be used by hand and/or used in combination with a machine. At least one or both of the coated abrasive article and the workpiece is generally moved relative to the other when abrading.
  • Abrading may be conducted under wet or dry conditions.
  • Exemplary liquids for wet abrading include water, water containing conventional rust inhibiting compounds, lubricant, oil, soap, and cutting fluid.
  • the liquid may also contain defoamers, degreasers, and/or the like.
  • the present disclosure provides a method of making a coated abrasive article, the method comprising sequential steps: a) providing a production tool comprising a carrier member having a dispensing surface having precisely-shaped cavities therein; b) depositing precisely-shaped abrasive platelets into at least some of the precisely-shaped cavities; c) depositing diluent abrasive particles on the dispensing surface; d) contacting the precisely-shaped abrasive platelets and the diluent abrasive particles with a curable make layer precursor disposed on a major surface of a backing; e) optionally separating the tool from the precisely-shaped abrasive platelets and the diluent abrasive particles; and f) at least partially curing the curable make layer precursor to provide and at least partially cured make layer precursor.
  • the present disclosure provides a method according to the first embodiment, wherein the sequential steps further comprise: g) disposing a curable size layer precursor onto the at least partially cured make layer precursor, the precisely-shaped abrasive platelets, and the diluent abrasive particles; and h) at least partially curing the curable size layer precursor.
  • the present disclosure provides a method according to the first or second embodiment, wherein the steps a) to e) are consecutive.
  • the present disclosure provides a method according to any of the first to third embodiments, wherein after step b), and before step c), at least a majority of precisely-shaped abrasive platelets are oriented with respective dihedral angles of less than or equal to 60 degrees relative to the dispensing surface of the tool.
  • the present disclosure provides a method according to any of the first to fourth embodiments, wherein after step c), at least a majority of the precisely-shaped abrasive platelets overhang a respective plurality of the diluent abrasive particles.
  • the present disclosure provides a method according to any of the first to fifth embodiments, wherein the diluent abrasive particles comprise crushed abrasive particles.
  • the present disclosure provides a method according to any of the first to sixth embodiments, wherein after step c), the precisely-shaped abrasive platelets and the diluent abrasive particles form a closed abrasive coat.
  • the present disclosure provides a method according to any of the first to seventh embodiments, wherein after step c), the precisely-shaped abrasive platelets and the diluent abrasive particles form an open abrasive coat.
  • the present disclosure provides a coated abrasive article made according to the method of any of the first to eighth embodiments.
  • the present disclosure provides a coated abrasive article comprising: a backing having a first major surface; a make layer disposed on and secured to the backing; an abrasive layer contacting and secured to the make layer, wherein the abrasive layer comprises precisely-shaped abrasive platelets and diluent abrasive particles, wherein the precisely-shaped abrasive platelets comprise a second major surface disposed at a dihedral angle of less than or equal to 60 degrees relative to the first major surface of the backing, and wherein at least a majority of the precisely-shaped abrasive platelets each overhangs a respective plurality of the diluent abrasive particles; and a size layer disposed over the make layer and the abrasive layer.
  • the present disclosure provides a coated abrasive article according to the tenth embodiment, wherein the precisely-shaped abrasive platelets are commonly aligned with respect to a longitudinal axis of the coated abrasive article.
  • the present disclosure provides a coated abrasive article according to the tenth embodiment, wherein the precisely-shaped abrasive platelets are commonly aligned with respect to a rotational axis of the coated abrasive article.
  • the present disclosure provides a coated abrasive article according to any of the tenth to twelfth embodiments, wherein the precisely-shaped abrasive platelets comprise triangular platelets.
  • the present disclosure provides a coated abrasive article according to any of the tenth to thirteenth embodiments, wherein after step c), the precisely-shaped abrasive platelets comprise rectangular platelets.
  • the present disclosure provides a coated abrasive article according to any of the tenth to fourteenth embodiments, wherein the diluent abrasive particles comprise crushed abrasive particles.
  • the present disclosure provides a coated abrasive article according to any of the tenth to fifteenth embodiments, wherein the precisely-shaped abrasive platelets and the diluent abrasive particles form a closed abrasive coat.
  • the present disclosure provides a coated abrasive article according to any of the tenth to fifteenth embodiments, wherein the precisely-shaped abrasive platelets and the diluent abrasive particles form an open abrasive coat.
  • the present disclosure provides a coated abrasive article according to any of the tenth to seventeenth embodiments, wherein the precisely-shaped abrasive platelets are positioned substantially according to a predetermined pattern.
  • the present disclosure provides a coated abrasive article comprising: a backing having a major surface; a make layer disposed on and secured to the backing; an abrasive layer contacting and secured to the make layer, wherein the abrasive layer comprises islands, each island comprising at least one precisely-shaped abrasive platelet and diluent abrasive particles, and wherein the islands are isolated one from another; and a size layer disposed over the make layer and the abrasive layer.
  • the present disclosure provides a coated abrasive article according to the nineteenth embodiment, wherein the diluent abrasive particles are predominantly disposed beneath respective overhangs of at least a majority of the precisely-shaped abrasive platelets.
  • the present disclosure provides a coated abrasive article according to the nineteenth or twentieth embodiment, wherein the islands are separated from each other by at least twice the minimum distance between closest precisely-shaped abrasive platelets of adjacent islands.
  • the present disclosure provides a coated abrasive article according to any of the nineteenth to twenty-first embodiments, wherein the precisely-shaped abrasive platelets are positioned substantially according to a predetermined pattern.
  • the present disclosure provides a coated abrasive article according to any of the nineteenth to twenty-second embodiments, wherein the precisely-shaped abrasive platelets are commonly aligned with respect to a longitudinal axis of the coated abrasive article.
  • the present disclosure provides a coated abrasive article according to any of the nineteenth to twenty-second embodiments, wherein the precisely-shaped abrasive platelets are commonly aligned with respect to a rotational axis of the coated abrasive article.
  • the present disclosure provides a method of abrading a workpiece comprising: providing a coated abrasive article according to any of the ninth to twenty-fourth embodiments; frictionally contacting at least a portion of the coated abrasive article with at least a portion of the surface of the workpiece; and moving at least one of the coated abrasive article or the workpiece relative to the other to abrade at least a portion of the surface.
  • SAP Excess SAP were carefully removed with a 3-inch (240-cm jWooster Spiffy Brush. About 9.2 g of SAP particles were loaded onto a 37-square inch area tool surface.
  • a fiber disc backing was coated by brush with Make Resin 1 to a weight of 3.0-3.1 grams.
  • the fiber disc backing with the make layer precursor was flipped over and contacted with the abrasive particle laden surface of the production tool.
  • the assembly was clamped together with binder clips, and then flipped over to facilitate abrasive particle transfer by gravity onto the make layer precursor. Vibration of the production tool further promotes abrasive particle transfer.
  • the production tool was separated from the make layer precursor and abrasive particles such that both the SAP and crushed abrasive particles have been transferred onto the make resin layer.
  • the coated disc was given a make layer precursor pre-cure at 90 °C for 1 hour followed by 103 °C for 3 hours.
  • Precured discs were then coated by brush with curable Size Resin 1. Excess size resin was removed with a dry brush until the flooded glossy appearance was reduced to a matte appearance. The size-coated discs were weighed to establish the size resin weight. The amount of size resin added was 11.5-13.0 g size resin coating (i.e., size layer precursor) was used. The discs were cured for 90 minutes at 90 °C, followed by 16 hours at 103 °C. The cured discs were orthogonally flexed over a 1.5-inch (3.8-cm) diameter roller. The surface of the resulting coated abrasive article was characterized with an optical microscope. Results are shown in FIGS. 9A and 9B.
  • Example 2 The procedure of Example 1 was repeated, except that the SAP loaded on the production tool was transferred onto make layer precursor first, and then the P80 grade crushed garnet grains were directly coated to fiber disc substrate through drop coating (abrasive particles fell onto the make layer precursor by gravity). Results are shown in FIGS. 10A and 10B.
  • EXAMPLE 2 The procedure of Example 1 was repeated, except that the SAP loaded on the production tool was transferred onto make layer precursor first, and then the P80 grade crushed garnet grains were directly coated to fiber disc substrate through drop coating (abrasive particles fell onto the make layer precursor by gravity). Results are shown in FIGS. 10A and 10B. EXAMPLE 2
  • Example 2 The procedure of Example 2 was repeated, except that the SAP loaded on the production tool was transferred onto the make layer precursor first, and then 8.2 g P80 grade crushed garnet grains were directly coated to the make layer precursor through drop coating. Results are shown in FIGS. 12A and 12B. All cited references, patents, and patent applications in this application are incorporated by reference in a consistent manner. In the event of inconsistencies or contradictions between portions of the incorporated references and this application, the information in this application shall control. The preceding description, given in order to enable one of ordinary skill in the art to practice the claimed disclosure, is not to be construed as limiting the scope of the disclosure, which is defined by the claims and all equivalents thereto.

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Abstract

Un procédé de fabrication d'un article abrasif enrobé consiste à : déposer des plaquettes abrasives de forme précise dans des cavités de forme précise dans un outil de production ; déposer des particules abrasives de diluant sur l'outil de production ; mettre en contact les plaquettes abrasives de forme précise et les particules abrasives de diluant avec un précurseur de couche de fabrication durcissable disposé sur une surface principale d'un support ; séparer l'outil des plaquettes abrasives de forme précise et les particules abrasives de diluant ; et durcir au moins partiellement le précurseur de couche de fabrication durcissable pour obtenir un précurseur de couche de fabrication au moins partiellement durci. L'invention concerne également des articles abrasifs enrobés pouvant être préparés par le procédé.
PCT/IB2020/059507 2019-10-17 2020-10-09 Articles abrasifs enrobés et son procédé de fabrication WO2021074756A1 (fr)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11142673B2 (en) 2012-01-10 2021-10-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US11154964B2 (en) 2012-10-15 2021-10-26 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11230653B2 (en) 2016-09-29 2022-01-25 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11427740B2 (en) 2017-01-31 2022-08-30 Saint-Gobain Ceramics & Plastics, Inc. Method of making shaped abrasive particles and articles comprising forming a flange from overfilling
US11453811B2 (en) 2011-12-30 2022-09-27 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US11472989B2 (en) 2015-03-31 2022-10-18 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11590632B2 (en) 2013-03-29 2023-02-28 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11608459B2 (en) 2014-12-23 2023-03-21 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US11643582B2 (en) 2015-03-31 2023-05-09 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11718774B2 (en) 2016-05-10 2023-08-08 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US11879087B2 (en) 2015-06-11 2024-01-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11891559B2 (en) 2014-04-14 2024-02-06 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11926781B2 (en) 2014-01-31 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US11926019B2 (en) 2019-12-27 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US11959009B2 (en) 2016-05-10 2024-04-16 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
US12043784B2 (en) 2012-05-23 2024-07-23 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US12122953B2 (en) 2020-12-22 2024-10-22 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles

Citations (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910444A (en) 1931-02-13 1933-05-23 Carborundum Co Process of making abrasive materials
US3041156A (en) 1959-07-22 1962-06-26 Norton Co Phenolic resin bonded grinding wheels
US4314827A (en) 1979-06-29 1982-02-09 Minnesota Mining And Manufacturing Company Non-fused aluminum oxide-based abrasive mineral
US4652275A (en) 1985-08-07 1987-03-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US4734104A (en) 1984-05-09 1988-03-29 Minnesota Mining And Manufacturing Company Coated abrasive product incorporating selective mineral substitution
US4737163A (en) 1984-05-09 1988-04-12 Minnesota Mining And Manufacturing Company Coated abrasive product incorporating selective mineral substitution
US4751138A (en) 1986-08-11 1988-06-14 Minnesota Mining And Manufacturing Company Coated abrasive having radiation curable binder
US4799939A (en) 1987-02-26 1989-01-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US4997461A (en) 1989-09-11 1991-03-05 Norton Company Nitrified bonded sol gel sintered aluminous abrasive bodies
US5009675A (en) 1988-06-17 1991-04-23 Lonza Ltd Coated silicon carbide abrasive grain
US5011508A (en) 1988-10-14 1991-04-30 Minnesota Mining And Manufacturing Company Shelling-resistant abrasive grain, a method of making the same, and abrasive products
US5042991A (en) 1989-03-13 1991-08-27 Lonza Ltd. Hydrophobically coated abrasive grain
US5085671A (en) 1990-05-02 1992-02-04 Minnesota Mining And Manufacturing Company Method of coating alumina particles with refractory material, abrasive particles made by the method and abrasive products containing the same
US5108463A (en) 1989-08-21 1992-04-28 Minnesota Mining And Manufacturing Company Conductive coated abrasives
US5137542A (en) 1990-08-08 1992-08-11 Minnesota Mining And Manufacturing Company Abrasive printed with an electrically conductive ink
US5152917A (en) 1991-02-06 1992-10-06 Minnesota Mining And Manufacturing Company Structured abrasive article
US5201916A (en) 1992-07-23 1993-04-13 Minnesota Mining And Manufacturing Company Shaped abrasive particles and method of making same
US5203884A (en) 1992-06-04 1993-04-20 Minnesota Mining And Manufacturing Company Abrasive article having vanadium oxide incorporated therein
US5213591A (en) 1992-07-28 1993-05-25 Ahmet Celikkaya Abrasive grain, method of making same and abrasive products
US5328716A (en) 1992-08-11 1994-07-12 Minnesota Mining And Manufacturing Company Method of making a coated abrasive article containing a conductive backing
US5366523A (en) 1992-07-23 1994-11-22 Minnesota Mining And Manufacturing Company Abrasive article containing shaped abrasive particles
US5378251A (en) 1991-02-06 1995-01-03 Minnesota Mining And Manufacturing Company Abrasive articles and methods of making and using same
US5417726A (en) 1991-12-20 1995-05-23 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5436063A (en) 1993-04-15 1995-07-25 Minnesota Mining And Manufacturing Company Coated abrasive article incorporating an energy cured hot melt make coat
US5435816A (en) 1993-01-14 1995-07-25 Minnesota Mining And Manufacturing Company Method of making an abrasive article
US5496386A (en) 1993-03-18 1996-03-05 Minnesota Mining And Manufacturing Company Coated abrasive article having diluent particles and shaped abrasive particles
US5505747A (en) 1994-01-13 1996-04-09 Minnesota Mining And Manufacturing Company Method of making an abrasive article
US5520711A (en) 1993-04-19 1996-05-28 Minnesota Mining And Manufacturing Company Method of making a coated abrasive article comprising a grinding aid dispersed in a polymeric blend binder
US5556437A (en) 1990-11-14 1996-09-17 Minnesota Mining And Manufacturing Company Coated abrasive having an overcoating of an epoxy resin coatable from water
US5560753A (en) 1992-02-12 1996-10-01 Minnesota Mining And Manufacturing Company Coated abrasive article containing an electrically conductive backing
US5565011A (en) 1993-10-19 1996-10-15 Minnesota Mining And Manufacturing Company Abrasive article comprising a make coat transferred by lamination and methods of making same
US5573619A (en) 1991-12-20 1996-11-12 Minnesota Mining And Manufacturing Company Method of making a coated abrasive belt with an endless, seamless backing
US5672097A (en) 1993-09-13 1997-09-30 Minnesota Mining And Manufacturing Company Abrasive article for finishing
US5695533A (en) * 1996-09-06 1997-12-09 Norton Company Abrasive products
US5700302A (en) 1996-03-15 1997-12-23 Minnesota Mining And Manufacturing Company Radiation curable abrasive article with tie coat and method
US5714259A (en) 1993-06-30 1998-02-03 Minnesota Mining And Manufacturing Company Precisely shaped abrasive composite
US5766277A (en) 1996-09-20 1998-06-16 Minnesota Mining And Manufacturing Company Coated abrasive article and method of making same
US5946991A (en) 1997-09-03 1999-09-07 3M Innovative Properties Company Method for knurling a workpiece
US5954844A (en) 1996-05-08 1999-09-21 Minnesota Mining & Manufacturing Company Abrasive article comprising an antiloading component
US5961674A (en) 1995-10-20 1999-10-05 3M Innovative Properties Company Abrasive article containing an inorganic metal orthophosphate
US5975988A (en) 1994-09-30 1999-11-02 Minnesota Mining And Manfacturing Company Coated abrasive article, method for preparing the same, and method of using a coated abrasive article to abrade a hard workpiece
US5975987A (en) 1995-10-05 1999-11-02 3M Innovative Properties Company Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
US5984988A (en) 1992-07-23 1999-11-16 Minnesota Minning & Manufacturing Company Shaped abrasive particles and method of making same
US6077601A (en) 1998-05-01 2000-06-20 3M Innovative Properties Company Coated abrasive article
US6228133B1 (en) 1998-05-01 2001-05-08 3M Innovative Properties Company Abrasive articles having abrasive layer bond system derived from solid, dry-coated binder precursor particles having a fusible, radiation curable component
US6521004B1 (en) 2000-10-16 2003-02-18 3M Innovative Properties Company Method of making an abrasive agglomerate particle
US20030207659A1 (en) * 2000-11-03 2003-11-06 3M Innovative Properties Company Abrasive product and method of making and using the same
US6881483B2 (en) 2000-10-06 2005-04-19 3M Innovative Properties Company Ceramic aggregate particles
US20090169816A1 (en) 2007-12-27 2009-07-02 3M Innovative Properties Company Shaped, fractured abrasive particle, abrasive article using same and method of making
US20090165394A1 (en) 2007-12-27 2009-07-02 3M Innovative Properties Company Method of making abrasive shards, shaped abrasive particles with an opening, or dish-shaped abrasive particles
WO2011068724A2 (fr) * 2009-12-02 2011-06-09 3M Innovative Properties Company Procédé de fabrication d'un article abrasif revêtu comprenant des particules abrasives mises en forme et produit résultant
US8142532B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with an opening
US8142891B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Dish-shaped abrasive particles with a recessed surface
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US20120227333A1 (en) 2009-12-02 2012-09-13 Adefris Negus B Dual tapered shaped abrasive particles
US20130040537A1 (en) 2010-04-27 2013-02-14 Mark G. Schwabel Ceramic shaped abrasive particles, methods of making the same, and abrasive articles containing the same
US20130125477A1 (en) 2010-08-04 2013-05-23 3M Innovative Properties Company Intersecting plate shaped abrasive particles
US20150089881A1 (en) * 2013-09-30 2015-04-02 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
WO2015100018A1 (fr) * 2013-12-23 2015-07-02 3M Innovative Properties Company Systèmes de positionnement de particules abrasives et outils de production associés
US20160311081A1 (en) 2013-12-23 2016-10-27 3M Innovative Properties Company A coated abrasive article maker apparatus
US20160311084A1 (en) 2013-12-23 2016-10-27 3M Innovative Properties Company Method of making a coated abrasive article
US9776302B2 (en) 2011-02-16 2017-10-03 3M Innovative Properties Company Coated abrasive article having rotationally aligned formed ceramic abrasive particles and method of making
WO2019102329A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102325A1 (fr) 2017-11-21 2019-05-31 Vincenzo Buoninfante Matelas
WO2019102331A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102330A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102332A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5007943A (en) * 1989-11-03 1991-04-16 Norton Company Sol-gel process alumina abrasive grain blends in coated abrasive material
US7124753B2 (en) * 1997-04-04 2006-10-24 Chien-Min Sung Brazed diamond tools and methods for making the same
US10137556B2 (en) * 2009-06-22 2018-11-27 3M Innovative Properties Company Shaped abrasive particles with low roundness factor
CA2907372C (fr) 2013-03-29 2017-12-12 Saint-Gobain Abrasives, Inc. Particules abrasives ayant des formes particulieres et procedes de formation de telles particules
MX2016013465A (es) 2014-04-14 2017-02-15 Saint-Gobain Ceram & Plastics Inc Articulo abrasivo que incluye particulas abrasivas conformadas.
WO2016064726A1 (fr) * 2014-10-21 2016-04-28 3M Innovative Properties Company Préformes abrasives, procédé de fabrication d'article abrasif, et article abrasif lié
TWI634200B (zh) 2015-03-31 2018-09-01 聖高拜磨料有限公司 固定磨料物品及其形成方法
CN109789534B (zh) * 2016-09-27 2022-11-29 3M创新有限公司 疏涂层磨料制品和研磨方法

Patent Citations (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910444A (en) 1931-02-13 1933-05-23 Carborundum Co Process of making abrasive materials
US3041156A (en) 1959-07-22 1962-06-26 Norton Co Phenolic resin bonded grinding wheels
US4314827A (en) 1979-06-29 1982-02-09 Minnesota Mining And Manufacturing Company Non-fused aluminum oxide-based abrasive mineral
US4734104A (en) 1984-05-09 1988-03-29 Minnesota Mining And Manufacturing Company Coated abrasive product incorporating selective mineral substitution
US4737163A (en) 1984-05-09 1988-04-12 Minnesota Mining And Manufacturing Company Coated abrasive product incorporating selective mineral substitution
US4652275A (en) 1985-08-07 1987-03-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US4751138A (en) 1986-08-11 1988-06-14 Minnesota Mining And Manufacturing Company Coated abrasive having radiation curable binder
US4799939A (en) 1987-02-26 1989-01-24 Minnesota Mining And Manufacturing Company Erodable agglomerates and abrasive products containing the same
US5009675A (en) 1988-06-17 1991-04-23 Lonza Ltd Coated silicon carbide abrasive grain
US5011508A (en) 1988-10-14 1991-04-30 Minnesota Mining And Manufacturing Company Shelling-resistant abrasive grain, a method of making the same, and abrasive products
US5042991A (en) 1989-03-13 1991-08-27 Lonza Ltd. Hydrophobically coated abrasive grain
US5108463B1 (en) 1989-08-21 1996-08-13 Minnesota Mining & Mfg Conductive coated abrasives
US5108463A (en) 1989-08-21 1992-04-28 Minnesota Mining And Manufacturing Company Conductive coated abrasives
US4997461A (en) 1989-09-11 1991-03-05 Norton Company Nitrified bonded sol gel sintered aluminous abrasive bodies
US5085671A (en) 1990-05-02 1992-02-04 Minnesota Mining And Manufacturing Company Method of coating alumina particles with refractory material, abrasive particles made by the method and abrasive products containing the same
US5137542A (en) 1990-08-08 1992-08-11 Minnesota Mining And Manufacturing Company Abrasive printed with an electrically conductive ink
US5556437A (en) 1990-11-14 1996-09-17 Minnesota Mining And Manufacturing Company Coated abrasive having an overcoating of an epoxy resin coatable from water
US5152917B1 (en) 1991-02-06 1998-01-13 Minnesota Mining & Mfg Structured abrasive article
US5152917A (en) 1991-02-06 1992-10-06 Minnesota Mining And Manufacturing Company Structured abrasive article
US5378251A (en) 1991-02-06 1995-01-03 Minnesota Mining And Manufacturing Company Abrasive articles and methods of making and using same
US5609706A (en) 1991-12-20 1997-03-11 Minnesota Mining And Manufacturing Company Method of preparation of a coated abrasive belt with an endless, seamless backing
US5573619A (en) 1991-12-20 1996-11-12 Minnesota Mining And Manufacturing Company Method of making a coated abrasive belt with an endless, seamless backing
US5417726A (en) 1991-12-20 1995-05-23 Minnesota Mining And Manufacturing Company Coated abrasive backing
US5560753A (en) 1992-02-12 1996-10-01 Minnesota Mining And Manufacturing Company Coated abrasive article containing an electrically conductive backing
US5203884A (en) 1992-06-04 1993-04-20 Minnesota Mining And Manufacturing Company Abrasive article having vanadium oxide incorporated therein
US5201916A (en) 1992-07-23 1993-04-13 Minnesota Mining And Manufacturing Company Shaped abrasive particles and method of making same
US5366523A (en) 1992-07-23 1994-11-22 Minnesota Mining And Manufacturing Company Abrasive article containing shaped abrasive particles
US5984988A (en) 1992-07-23 1999-11-16 Minnesota Minning & Manufacturing Company Shaped abrasive particles and method of making same
US5213591A (en) 1992-07-28 1993-05-25 Ahmet Celikkaya Abrasive grain, method of making same and abrasive products
US5352254A (en) 1992-07-28 1994-10-04 Minnesota Mining And Manufacturing Company Abrasive grain, method of making same and abrasive products
US5328716A (en) 1992-08-11 1994-07-12 Minnesota Mining And Manufacturing Company Method of making a coated abrasive article containing a conductive backing
US5435816A (en) 1993-01-14 1995-07-25 Minnesota Mining And Manufacturing Company Method of making an abrasive article
US5496386A (en) 1993-03-18 1996-03-05 Minnesota Mining And Manufacturing Company Coated abrasive article having diluent particles and shaped abrasive particles
US5436063A (en) 1993-04-15 1995-07-25 Minnesota Mining And Manufacturing Company Coated abrasive article incorporating an energy cured hot melt make coat
US5520711A (en) 1993-04-19 1996-05-28 Minnesota Mining And Manufacturing Company Method of making a coated abrasive article comprising a grinding aid dispersed in a polymeric blend binder
US5714259A (en) 1993-06-30 1998-02-03 Minnesota Mining And Manufacturing Company Precisely shaped abrasive composite
US5672097A (en) 1993-09-13 1997-09-30 Minnesota Mining And Manufacturing Company Abrasive article for finishing
US6129540A (en) 1993-09-13 2000-10-10 Minnesota Mining & Manufacturing Company Production tool for an abrasive article and a method of making same
US5565011A (en) 1993-10-19 1996-10-15 Minnesota Mining And Manufacturing Company Abrasive article comprising a make coat transferred by lamination and methods of making same
US5505747A (en) 1994-01-13 1996-04-09 Minnesota Mining And Manufacturing Company Method of making an abrasive article
US5975988A (en) 1994-09-30 1999-11-02 Minnesota Mining And Manfacturing Company Coated abrasive article, method for preparing the same, and method of using a coated abrasive article to abrade a hard workpiece
US5975987A (en) 1995-10-05 1999-11-02 3M Innovative Properties Company Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
US5961674A (en) 1995-10-20 1999-10-05 3M Innovative Properties Company Abrasive article containing an inorganic metal orthophosphate
US5700302A (en) 1996-03-15 1997-12-23 Minnesota Mining And Manufacturing Company Radiation curable abrasive article with tie coat and method
US5954844A (en) 1996-05-08 1999-09-21 Minnesota Mining & Manufacturing Company Abrasive article comprising an antiloading component
US5695533A (en) * 1996-09-06 1997-12-09 Norton Company Abrasive products
US5766277A (en) 1996-09-20 1998-06-16 Minnesota Mining And Manufacturing Company Coated abrasive article and method of making same
US5946991A (en) 1997-09-03 1999-09-07 3M Innovative Properties Company Method for knurling a workpiece
US6077601A (en) 1998-05-01 2000-06-20 3M Innovative Properties Company Coated abrasive article
US6228133B1 (en) 1998-05-01 2001-05-08 3M Innovative Properties Company Abrasive articles having abrasive layer bond system derived from solid, dry-coated binder precursor particles having a fusible, radiation curable component
US6881483B2 (en) 2000-10-06 2005-04-19 3M Innovative Properties Company Ceramic aggregate particles
US6521004B1 (en) 2000-10-16 2003-02-18 3M Innovative Properties Company Method of making an abrasive agglomerate particle
US20030207659A1 (en) * 2000-11-03 2003-11-06 3M Innovative Properties Company Abrasive product and method of making and using the same
US20090169816A1 (en) 2007-12-27 2009-07-02 3M Innovative Properties Company Shaped, fractured abrasive particle, abrasive article using same and method of making
US20090165394A1 (en) 2007-12-27 2009-07-02 3M Innovative Properties Company Method of making abrasive shards, shaped abrasive particles with an opening, or dish-shaped abrasive particles
US8142531B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with a sloping sidewall
US8142532B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Shaped abrasive particles with an opening
US8142891B2 (en) 2008-12-17 2012-03-27 3M Innovative Properties Company Dish-shaped abrasive particles with a recessed surface
WO2011068724A2 (fr) * 2009-12-02 2011-06-09 3M Innovative Properties Company Procédé de fabrication d'un article abrasif revêtu comprenant des particules abrasives mises en forme et produit résultant
US20120227333A1 (en) 2009-12-02 2012-09-13 Adefris Negus B Dual tapered shaped abrasive particles
US20130040537A1 (en) 2010-04-27 2013-02-14 Mark G. Schwabel Ceramic shaped abrasive particles, methods of making the same, and abrasive articles containing the same
US20130125477A1 (en) 2010-08-04 2013-05-23 3M Innovative Properties Company Intersecting plate shaped abrasive particles
US9776302B2 (en) 2011-02-16 2017-10-03 3M Innovative Properties Company Coated abrasive article having rotationally aligned formed ceramic abrasive particles and method of making
US20150089881A1 (en) * 2013-09-30 2015-04-02 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US20160311081A1 (en) 2013-12-23 2016-10-27 3M Innovative Properties Company A coated abrasive article maker apparatus
US20160311084A1 (en) 2013-12-23 2016-10-27 3M Innovative Properties Company Method of making a coated abrasive article
WO2015100018A1 (fr) * 2013-12-23 2015-07-02 3M Innovative Properties Company Systèmes de positionnement de particules abrasives et outils de production associés
WO2019102329A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102325A1 (fr) 2017-11-21 2019-05-31 Vincenzo Buoninfante Matelas
WO2019102331A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102330A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation
WO2019102332A1 (fr) 2017-11-21 2019-05-31 3M Innovative Properties Company Disque abrasif revêtu et ses procédés de fabrication et d'utilisation

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US11453811B2 (en) 2011-12-30 2022-09-27 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle and method of forming same
US11859120B2 (en) 2012-01-10 2024-01-02 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having an elongated body comprising a twist along an axis of the body
US11649388B2 (en) 2012-01-10 2023-05-16 Saint-Gobain Cermaics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US11142673B2 (en) 2012-01-10 2021-10-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles having complex shapes and methods of forming same
US12043784B2 (en) 2012-05-23 2024-07-23 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and methods of forming same
US11154964B2 (en) 2012-10-15 2021-10-26 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11590632B2 (en) 2013-03-29 2023-02-28 Saint-Gobain Abrasives, Inc. Abrasive particles having particular shapes and methods of forming such particles
US11926781B2 (en) 2014-01-31 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particle including dopant material and method of forming same
US11891559B2 (en) 2014-04-14 2024-02-06 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11608459B2 (en) 2014-12-23 2023-03-21 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US11926780B2 (en) 2014-12-23 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Shaped abrasive particles and method of forming same
US12084611B2 (en) 2015-03-31 2024-09-10 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
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US11643582B2 (en) 2015-03-31 2023-05-09 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11879087B2 (en) 2015-06-11 2024-01-23 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
US11959009B2 (en) 2016-05-10 2024-04-16 Saint-Gobain Ceramics & Plastics, Inc. Abrasive particles and methods of forming same
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US11230653B2 (en) 2016-09-29 2022-01-25 Saint-Gobain Abrasives, Inc. Fixed abrasive articles and methods of forming same
US11549040B2 (en) 2017-01-31 2023-01-10 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles having a tooth portion on a surface
US11932802B2 (en) 2017-01-31 2024-03-19 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles comprising a particular toothed body
US11427740B2 (en) 2017-01-31 2022-08-30 Saint-Gobain Ceramics & Plastics, Inc. Method of making shaped abrasive particles and articles comprising forming a flange from overfilling
US11926019B2 (en) 2019-12-27 2024-03-12 Saint-Gobain Ceramics & Plastics, Inc. Abrasive articles and methods of forming same
US12122953B2 (en) 2020-12-22 2024-10-22 Saint-Gobain Ceramics & Plastics, Inc. Abrasive article including shaped abrasive particles
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