US2023001541A1PendingUtilityA1

Abrasive article

Assignee: 3M INNOVATIVE PROPERTIES COMPANYPriority: Dec 9, 2019Filed: Dec 7, 2020Published: Jan 5, 2023
Est. expiryDec 9, 2039(~13.4 yrs left)· nominal 20-yr term from priority
B24D 11/02B24D 11/005B24D 3/007B24D 11/001B24D 3/004B24D 18/0072
53
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Claims

Abstract

An abrasive article is disclosed. The abrasive article has a backing substrate. The abrasive article also has a laminate joined to the backing substrate. The laminate comprises a hot melt polymer. The abrasive article also has a cured resin composition joined to the laminate opposite the backing substrate. The abrasive article also has abrasive particles joined to the cured resin composition.

Claims

exact text as granted — not AI-modified
1 . An abrasive article comprising:
 a backing substrate;   a laminate joined to the backing substrate, wherein the laminate comprises a hot melt polymer;   a cured resin composition joined to the laminate opposite the backing substrate;   abrasive particles joined to the cured resin composition.   
     
     
         2 . The abrasive article of  claim 1 , wherein the laminate at least partially wraps around the strands to leave open the first and second void spaces. 
     
     
         3 . The abrasive article of  claim 1 , a wherein the laminate is joined to the backing substrate as a continuous sheet, an extruded film or a coating layer. 
     
     
         4 . (canceled) 
     
     
         5 . The abrasive article of  claim 1 , wherein the substrate is treated with a primer treatment before or after the lamination and wherein the primer treatment is one of: a backsize layer, a presize layer, a tie layer, a saturant, a subsize treatment, a plasma treatment, a corona treatment, ultraviolet light exposure, electron beam exposure, a flame discharge, or a combination thereof. 
     
     
         6 . (canceled) 
     
     
         7 . The abrasive article of  claim 1 , wherein the fabric substrate has a first stiffness and a second stiffness after the laminate is joined to the fabric stiffness, and wherein the second stiffness is equal to or higher than the first stiffness. 
     
     
         8 - 10 . (canceled) 
     
     
         11 . The abrasive article of  claim 1 , wherein the backing substrate comprises a fabric comprising strands that form first void spaces between the strands, and wherein a plurality of second void spaces extend through the laminate and coincide with first void spaces in the fabric substrate. 
     
     
         12 - 14 . (canceled) 
     
     
         15 . The abrasive article of  claim 1 , wherein the laminate comprises a material with a melting point between about 30° C. to about 220° C. 
     
     
         16 - 23 . (canceled) 
     
     
         24 . The abrasive article of  claim 1 , wherein the laminate substantially prevents bleed-through of the resin to the backing substrate, such that the resin does not directly contact the backing substrate. 
     
     
         25 - 30 . (canceled) 
     
     
         31 . The abrasive article of  claim 1 , wherein the laminate has adhesive promotion functionality with respect to the backing and a resin composition. 
     
     
         32 . The abrasive article of  claim 1 , wherein the laminate is configured to bond both a backing substrate material and a resin composition. 
     
     
         33 . (canceled) 
     
     
         34 . A method of manufacturing a coated abrasive article, the method including:
 providing a backing substrate;   applying a thermoplastic laminate;   applying a make resin;   applying a plurality of abrasive particles.   
     
     
         35 - 36 . (canceled) 
     
     
         37 . The method of  claim 34 , wherein applying the thermoplastic laminate comprises applying the laminate as a continuous sheet, a blown melty film, or an extrusion. 
     
     
         38 . The method of  claim 34 , wherein the laminate is coextruded with the backing substrate. 
     
     
         39 - 49 . (canceled) 
     
     
         50 . The method of  claim 34 , wherein the laminate comprises a material with a melting point between about 50° C. to about 150° C. 
     
     
         51 - 53 . (canceled) 
     
     
         54 . The method of  claim 34 , wherein the cured resin substantially only contacts the laminate, such that the resin is substantially not in contact with the backing substrate. 
     
     
         55 - 57 . (canceled)

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