Method of making a coated abrasive article

    公开(公告)号:US11724363B2

    公开(公告)日:2023-08-15

    申请号:US17049470

    申请日:2019-04-16

    CPC classification number: B24D11/005 B24D3/28 B24D18/0072

    Abstract: A method of making a coated abrasive article includes at least four steps. In step a), a web is provided comprising a backing having a make layer precursor disposed thereon. The web moves along a web path in a downweb direction, and the web has a crossweb direction that is perpendicular to the downweb direction. The make layer precursor comprises a first curable binder precursor; In step b) an applied magnetic field is provided. In step c), a mixture of magnetizable non-magnetizable particles is passed through the applied magnetic field and onto the make layer precursor such that the magnetizable and non-magnetizable particles are predominantly deposited onto the web in a drop zone according to a predetermined order. At least one of the magnetizable particles or the non-magnetizable particles comprises abrasive particles. In step d), the make layer precursor is at least partially cured to provide a make layer.

    SHAPED ABRASIVE PARTICLES WITH CONCAVE VOID WITHIN ONE OF THE PLURALITY OF EDGES

    公开(公告)号:US20220396722A1

    公开(公告)日:2022-12-15

    申请号:US17755014

    申请日:2020-10-23

    Abstract: A shaped abrasive particle is presented. The shaped abrasive particle has a first and second surface. The first and second surfaces are substantially parallel to each other and separated by a thickness. Each of the first and second surfaces have a surface profile, which includes a plurality of corners and a plurality of edges connecting the plurality of corners. The shaped abrasive particle also includes a recess included wholly within one of the plurality of edges, wherein the recess is a concave void extending into the surface profile. The shaped abrasive particle also includes a magnetically responsive coating. The magnetically responsive coating causes the shaped abrasive particle to be responsive to a magnetic field. The shaped abrasive particle, when exposed to the magnetic field, experiences a net torque that causes the shaped abrasive particle to orient with respect to the magnetic field such that each of the first and second surfaces are substantially perpendicular to a backing.

    DEVICE WITH LIGHT CONTROL STRUCTURE HAVING MAGNETIZABLE PARTICLES

    公开(公告)号:US20210273126A1

    公开(公告)日:2021-09-02

    申请号:US17257878

    申请日:2019-07-18

    Abstract: According to one embodiment, a solar device, comprises one or more photovoltaic cells disposed in an encapsulant and a light control structure including a louver film having a series of louver structures, wherein each louver structure includes one or more groupings of a plurality magnetizable particles aligned at least in a first orientation dispersed in a binding matrix. The light control structure substantially transmits light incident at a first angle and substantially limits transmission of light incident at a second angle. Each louver structure is spaced apart from an adjacent louver structure, wherein each louver structure is substantially aligned in a plane substantially parallel to an adjacent louver structure.

    COATED ABRASIVE ARTICLE AND METHOD OF MAKING THE SAME

    公开(公告)号:US20210046614A1

    公开(公告)日:2021-02-18

    申请号:US17049521

    申请日:2019-04-16

    Abstract: A method of making a coated abrasive article is disclosed. A backing has first and second opposed major surfaces. A make layer precursor is disposed on at least a portion of the first major surface. Magnetizable abrasive particles are disposed onto the make layer precursor while under the influence of an applied magnetic field. At least a majority the magnetizable abrasive particles extend away from the make layer precursor in an orientation substantially aligned with the applied magnetic field. Non-magnetizable particles are then disposed onto the make layer precursor while under the influence of the applied magnetic field. At least some of the non-magnetizable particles are disposed between the magnetizable abrasive particles. Then, the make layer precursor is at least partially cured to provide a make layer.

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