US2021308834A1PendingUtilityA1
Self-contained buffing articles
Assignee: 3M INNOVATIVE PROPERTIES COPriority: Jul 30, 2018Filed: Jul 18, 2019Published: Oct 7, 2021
Est. expiryJul 30, 2038(~12 yrs left)· nominal 20-yr term from priority
B24D 11/001B24D 18/0045B24D 18/0009B24D 18/0027B24D 18/0072B24D 3/20B24D 13/16
49
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Claims
Abstract
Abrasive articles comprising at least one layer of fibrous nonwoven fabric, woven fabrics and combinations thereof are disclosed. The fabrics or combinations of fabrics may have a hardened adherent coating. The adherent coating may comprise a first coating and a second coating. The second coating may be formed on top of the first coating. The first coating may comprise a crosslinked binder and the second coating may comprise an abrasive particle and a lubricant.
Claims
exact text as granted — not AI-modified1 . A unitized abrasive wheel comprising;
at least one layer of fibrous nonwoven fabric; the nonwoven fabric having a hardened adherent coating comprising a first coating and a second coating, the second coating formed on top of the first coating; wherein the first coating comprises a crosslinked binder; and wherein the second coating comprises an abrasive particle and a lubricant, wherein the abrasive particle is less than about 15 μ.
2 . (canceled)
3 . The unitized abrasive wheel of claim 1 , wherein the nonwoven fabric comprises a combination of a synthetic fiber and a natural fiber.
4 . The unitized wheel of claim 3 , where in the synthetic fiber comprises nylon and the natural fiber comprises cellulose.
5 - 7 . (canceled)
8 . The unitized wheel of claim 10 , wherein the crosslinked binder comprises a polyurethane and an amine.
12 . (canceled)
9 . The unitized wheel of claim 1 , wherein less than all of the abrasive particles are fixed to the nonwoven web.
10 . The unitized wheel of claim 1 , wherein substantially all of the abrasive particles are fixed to the nonwoven web.
15 - 18 . (canceled)
11 . A method of making a unitized abrasive wheel comprising the steps of:
providing a nonwoven fabric; coating the nonwoven fabric with a first coating, the first coating comprising a precursor crosslinker; hardening the first coating to form an adherent coated web; compressing the adherent coated web to form a compressed adherent coated web; and coating at least one outside surface of the adherent coated web with a second coating, the second coating comprising a lubricant and an abrasive particle, wherein the abrasive particle is less than about 15 μ.
12 . (canceled)
13 . (canceled)
14 . The method of claim 19 , wherein the nonwoven fabric comprises a combination of a synthetic fiber and a natural fiber.
15 . (canceled)
16 . (canceled)
26 - 28 . (canceled)
19 . The method of claim 19 , wherein substantially all of the abrasive particles are fixed to the nonwoven web.
20 . The method of claim 19 , wherein the first coating comprises abrasive particles.
32 - 44 . (canceled)
21 . A self-contained fibrous buffing article comprising;
at least one layer of a combination of at least one fibrous nonwoven fabric and at least one woven fabric; the combination having a hardened adherent coating comprising a crosslinked binder, a lubricant, and abrasive particles, wherein the abrasive particles are less than about 15 μu.
46 - 48 . (canceled)
22 . The self-contained buffing article of claim 45 wherein the ratio of non-woven to the woven is about 1.5.
23 . The self-contained buffing article of claim 45 , wherein the woven fabric comprises cellulose.
24 . The self-contained buffing article of claim 45 , wherein the lubricant comprises at least a fatty acid, mineral oil, and glycerin.
25 . The self-contained buffing article of claim 45 , wherein the woven and nonwoven fabrics are mechanically entangled.
53 - 61 . (canceled)Join the waitlist — get patent alerts
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