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    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME
    53.
    发明公开
    REPOSITIONABLE ABRASIVE DISC MOUNTING ASSEMBLY AND METHOD OF USING THE SAME 审中-公开

    公开(公告)号：US20230339073A1

    公开(公告)日：2023-10-26

    申请号：US18005285

    申请日：2021-07-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Joseph B. Eckel ,  Erin D. Spring ,  Thomas J. Nelson ,  Fay T. Salmon ,  Dominic J. Triana ,  Jonathan J. O'Hare ,  Thomas R.J. Corrigan ,  David T. Buckley ,  Cory M. Arthur ,  Alireza Ghaderi

    IPC: B24D9/08

    CPC classification number: B24D9/085

    Abstract: A method for repositioning an abrasive disc within a repositionable abrasive disc mounting assembly is presented. The method includes mounting the abrasive disc to a repositionable abrasive disc mounting assembly in a first position. The mounting disc assembly includes the abrasive disc coupled to the back-up pad assembly such that the abrasive disc is in contact with a pressure feature of the back-up pad assembly, a drive shaft of a grinding tool, and a fastener that maintains the position of the abrasive disc and the back-up pad coupled to the drive shaft. The method also includes conducting an abrasive operation by activating the grinding tool. The method also includes re-positioning the abrasive disc, with respect to the repositionable abrasive disc mounting assembly, in a second position. The first position includes the abrasive disc in a first position relative to the pressure feature. The second position includes the abrasive disc in a second position relative to the pressure feature assembly. Re-positioning includes an adjustment between the first and second position while the abrasive disc is still positioned on the drive shaft between the fastener and the back-up pad assembly.

    COATED ABRASIVE ARTICLE HAVING SPACER PARTICLES, MAKING METHOD AND APPARATUS THEREFOR
    57.
    发明申请
    COATED ABRASIVE ARTICLE HAVING SPACER PARTICLES, MAKING METHOD AND APPARATUS THEREFOR 有权

    公开(公告)号：US20220055185A1

    公开(公告)日：2022-02-24

    申请号：US17415181

    申请日：2019-12-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Joseph B. Eckel ,  Aaron K. Nienaber ,  Thomas J. Nelson ,  Ann M. Hawkins ,  Amelia W. Koenig

    IPC: B24D11/00 ,  B24D18/00

    Abstract: Coated abrasive articles having spacer particles are formed by providing a production tool having a dispensing surface with a plurality of cavities, guiding the production tool past an abrasive particle feeder, dispensing shaped abrasive particles onto the dispensing surface and into the plurality of cavities of the production tool, guiding a resin coated backing sheet adjacent the production tool past a spacer particle feeder, and dispensing spacer particles onto the resin coated backing sheet and/or the production tool after the abrasive particle feeder prior to a deposit point for the shaped abrasive particles. The spacer particles are selected to have a thickness that is greater than a thickness of a resin coating of the resin coating backing sheet and a thickness and density once dispensed that are sufficient to substantially prevent the production tool from contacting the resin coated backing sheet at the deposit point.

    COATED ABRASIVE DISC AND METHODS OF MAKING AND USING THE SAME
    60.
    发明申请
    COATED ABRASIVE DISC AND METHODS OF MAKING AND USING THE SAME 有权

    公开(公告)号：US20210370473A1

    公开(公告)日：2021-12-02

    申请号：US16650147

    申请日：2018-11-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Thomas P. Hanschen ,  Steven J. Keipert ,  Joseph B. Eckel ,  Aaron K. Nienaber ,  Brant A. Moegenburg ,  Eric M. Moore ,  Thomas J. Nelson

    IPC: B24D11/00 ,  B24D7/06 ,  C09K3/14

    Abstract: A coated abrasive disc includes an abrasive layer disposed on a major surface of a disc backing. The abrasive layer comprises triangular abrasive platelets secured to a major surface of the disc backing by at least one binder material. The triangular abrasive platelets are outwardly disposed from the major surface at contiguous intersections of horizontal and vertical lines of a rectangular grid pattern, wherein the intersections of the rectangular grid pattern have an areal density defined by C/(LT) where C is a unitless coverage factor having a value between 0.1 and 0.4, L is the average major triangular abrasive platelet side length and T is the average triangular abrasive platelet thickness. At least 70 percent of the intersections have a triangular abrasive platelet disposed thereat. Each one of the triangular abrasive platelets has respective top and bottom surfaces connected to each other, and separated by, three sidewalls, and, on a respective basis, one sidewall facing the disc backing of at least 90 percent of the triangular abrasive platelets has a Z-axis rotational orientation within 10 degrees of the vertical lines. Methods of making and using the coated abrasive discs are also disclosed.

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