BACKUP PAD
    26.
    发明公开
    BACKUP PAD 审中-公开

    公开(公告)号:US20240017377A1

    公开(公告)日:2024-01-18

    申请号:US18251862

    申请日:2021-11-01

    CPC classification number: B24D3/002 B24D9/08

    Abstract: A method of tuning the contact pressure across an abrasive disc is presented. The method includes coupling the abrasive disc to a backup pad comprising a pressure tuning feature that causes an experienced pressure by a worksurface, across a radius of the abrasive disc, to be uniform. The method also includes abrading a worksurface by contacting the abrasive disc to the worksurface. The backup pad causes the abrasive disc to have a cut rate that is substantially uniform across the surface of the abrasive disc when compared to the abrasive disc on a backup pad with no pressure tuning feature.

    METHODS OF REPLENISHING A WRITABLE AND CLEANABLE ARTICLE AND KITS

    公开(公告)号:US20210403662A1

    公开(公告)日:2021-12-30

    申请号:US16981922

    申请日:2019-03-18

    Abstract: Methods and kits including writable and cleanable articles, wherein in one embodiment, a method of replenishing a hydrophilic surface on a writable and cleanable article is provided. The method comprising: providing a writable and cleanable article that includes a hydrophilic overcoat that has an at least partially depleted (i.e., at least partially exhausted) hydrophilic surface; and applying a cleaning and protecting composition to at least a portion of the hydrophilic overcoat; and drying the cleaning and protecting composition to provide a dried surface having a replenished hydrophilic surface. The writable and cleanable article includes: a base member having a front surface; a facing layer comprising a cured polymeric matrix and a plurality of inorganic nanoparticles dispersed in the polymeric matrix, wherein the facing layer is disposed on at least a portion of the base member front surface; an optional primer layer disposed on at least a portion of the facing layer; and a hydrophilic overcoat bonded to the facing layer and/or the optional primer layer through siloxane bonds, thereby providing a hydrophilic surface that is writable and cleanable. The cleaning and protecting composition includes: a hydrophilic silane; a surfactant; and water.

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