Abrasive backers and methods of their formation
AssigneeNeenah Paper, Inc.
InventorSteven Vervacke
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Abstract
Single ply cellulose-based abrasive backers are provided that can include a saturated nonwoven web defining a first surface and a second surface, wherein the saturated nonwoven web comprises cellulosic fibers, synthetic fibers, and a cured saturant composition. About 80 wt % to about 100 wt % of the cellulosic fibers within the nonwoven web can be hardwood fibers. In most embodiments, a top coating is positioned on the first surface of the saturated nonwoven web. Optionally, a backside coating is positioned on the second surface of the saturated nonwoven web. Methods are also provided for forming a cellulose-based abrasive backer. Multi-ply cellulose-based abrasive backers are also provided.
Claims20
A single ply cellulose-based abrasive backer, comprising:
- a saturated nonwoven web defining a first surface and a second surface, wherein the saturated nonwoven web comprises cellulosic fibers, synthetic fibers, and a cured saturant composition, wherein about 80 wt % to 100 wt % of the cellulosic fibers within the nonwoven web are hardwood fibers;
- and
- a top coating on the first surface of the saturated nonwoven web.
A method of forming a cellulose-based abrasive backer, the method comprising:
- saturating a nonwoven web with a saturating composition to form a saturated nonwoven web, wherein the nonwoven web comprises a cellulosic fibers and synthetic fibers, and wherein the saturating composition comprises a curable latex polymer;
- calendering the saturated nonwoven web;
- curing the saturated nonwoven web such that the curable latex polymer is crosslinked;
- and
- applying atop coating onto at least one surface of the cured, saturated nonwoven web.
A cellulose-based abrasive backer, comprising:
- at least two ply sheets laminated together, wherein each ply sheet comprises a saturated nonwoven web comprising cellulosic fibers, synthetic fibers, and a cured saturant composition, and further wherein about 80 wt % to about 100 wt % of the cellulosic fibers within the nonwoven web are hardwood fibers.
A cellulose-based abrasive backer, comprising:
- a top outer ply sheet;
- at least one middle ply sheet;
- and
- a bottom outer ply sheet,
- wherein the top outer ply sheet, the middle ply sheet, and the bottom outer ply sheet are laminated together such that the middle ply sheet is positioned between the top outer ply sheet and the bottom outer ply sheet, and wherein each of the top outer ply sheet, the middle ply sheet, and the bottom outer ply sheet comprise a saturated nonwoven web comprising cellulosic fibers, synthetic fibers, and a cured saturant composition, and further wherein about 80 wt % to about 100 wt % of the cellulosic fibers within the nonwoven web are hardwood fibers.
Dependencies are inferred from the claim text.