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    Nonwoven abrasive article and method of making same
    1.
    发明授权
    Nonwoven abrasive article and method of making same 失效
    无纺布磨料制品及其制造方法

    公开(公告)号：US5591239A

    公开(公告)日：1997-01-07

    申请号：US297807

    申请日：1994-08-30

    申请人： Eric G. Larson ,  Rufus C. Sanders, Jr. ,  Brent D. Niccum ,  Walter W. Pawlikowski ,  Elizabeth C. Edblom

    发明人： Eric G. Larson ,  Rufus C. Sanders, Jr. ,  Brent D. Niccum ,  Walter W. Pawlikowski ,  Elizabeth C. Edblom

    IPC分类号： A47L13/16 ,  B24D3/28 ,  B24D11/00 ,  F02B75/02 ,  B24D3/02 ,  C09K3/14

    CPC分类号： A47L13/16 ,  B24D11/005 ,  B24D3/28 ,  F02B2075/027

    摘要： An open low-density abrasive article comprising in combination:(a) a lofty, open, nonwoven three-dimensional fibrous web formed of a plurality of interentangled randomly-extending polyamide staple fibers including points of intersection and contact between the fibers, the points of intersection and contact between the fibers being bonded together to form a three-dimensionally integrated structure throughout the web, wherein the fibers comprise surfaces and a fiber tenacity of less than 5 g/denier; (b) abrasive particles dispersed throughout the web and securely adhered to the surfaces of the fibers; and (c) resinous material dispersed throughout the web comprising (i) a hard phenolic resin formed as a cured product of a phenolic resin precursor distributed throughout the web and in contact with the fibers, and (ii) a modifier component of the type and in an amount effective to substantially prevent chemical degradation of the fibers while in contact with the phenolic resin precursor. The invention also relates to methods of making such an abrasive article and converted forms of the abrasive article.

    摘要翻译： 一种开放的低密度磨料制品，其组合包括：（a）由多个互相连接的随机延伸的聚酰胺短纤维形成的高度开放的非织造三维纤维网，包括所述纤维之间的交点和接触点， 纤维之间的交叉和接触结合在一起，以在整个幅材上形成三维一体化的结构，其中纤维包括表面和纤维强度小于5g /旦; （b）分散在整个幅材上并且牢固地附着在纤维表面上的磨料颗粒; 和（c）分散在整个幅材上的树脂材料包括（i）形成为分布在整个幅材上并与纤维接触的酚醛树脂前体的固化产物的硬质酚醛树脂，和（ii）该类型的改性剂组分， 其量有效地基本上防止纤维在与酚醛树脂前体接触时的化学降解。 本发明还涉及制造这种磨料制品和磨料制品的转化形式的方法。

    Method of making a coated abrasive article
    4.
    发明授权
    Method of making a coated abrasive article 失效
    制造涂层磨料制品的方法

    公开(公告)号：US5368618A

    公开(公告)日：1994-11-29

    申请号：US970950

    申请日：1992-11-03

    申请人： Craig A. Masmar ,  Douglas S. Spencer ,  Elizabeth C. Edblom

    发明人： Craig A. Masmar ,  Douglas S. Spencer ,  Elizabeth C. Edblom

    IPC分类号： B24D3/28 ,  B24D3/34 ,  B24D11/00 ,  B29C39/18 ,  B29C70/64

    CPC分类号： B29C39/18 ,  B24D11/005 ,  B24D3/28 ,  B24D3/342 ,  B29C70/64 ,  B29C2791/001 ,  B29K2105/24 ,  B29L2031/736

    摘要： A method of preparing a coated abrasive article in which the presence of multiple layers of abrasive grains are minimized. In one variation, the method comprises the steps of: (a) providing a backing; (b) applying a make coat precursor to the backing; (c) partially curing the make coat precursor; (d) applying, preferably by projecting, a plurality of abrasive grains into the partially cured make coat precursor; and (e) completely curing the partially cured make coat precursor. In another variation of this method, a size coat precursor is applied over the abrasive grains and cured make coat, and the size coat precursor is completely cured. In another variation of this method, a size coat precursor is applied over the abrasive grains and the partially cured make coat precursor, and the make coat precursor and the size coat precursor are completely cured. The make coat precursor preferably comprises an unsaturated resin that polymerizes via a free radical polymerization mechanism at the site of .alpha.,.beta.-unsaturation.

    摘要翻译： 一种制备涂层磨料制品的方法，其中多层磨粒的存在被最小化。 在一个变型中，该方法包括以下步骤：（a）提供背衬; （b）将制作涂层前体施加到背衬上; （c）部分固化该底漆前体; （d）优选通过将多个磨粒投射到部分固化的成膜涂层前体中; 和（e）完全固化部分固化的成膜涂层前体。 在该方法的另一变型中，将大小涂层前体施加在磨料颗粒和固化的底涂层上，并且涂层前体完全固化。 在该方法的另一变型中，将大小涂层前体施加在磨料颗粒和部分固化的涂层前体上，并且制备涂层前体和涂层前体完全固化。 制备涂层前体优选包含通过自由基聚合机理在α，β-不饱和位点聚合的不饱和树脂。