Patent US5609706A successfully refreshed from Google Patents.
US5609706A
Expired / Lapsed
US
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Method of preparation of a coated abrasive belt with an endless, seamless backing
Assignee: 3M Co
•
Filing: 1995-05-08
•
Granted: 1997-03-11
•
Expires: 2015-05-08
Abstract
Abstract A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided. The method includes the steps of preparing a loop of liquid binder material having fibrous reinforcing material therein around the periphery of a drum; and solidifying the binder material such that an endless, seamless, backing loop having fibrous reinforcing material engulfed within the organic polymeric binder material is formed.
Inventors
- 👤 Harold W. Benedict
- 👤 Diana D. Zimny
- 👤 Donna W. Bange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:53
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/20; B24D11/00; B24D11/001; B24D11/005; B24D11/02
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
144 words
A method for preparing a coated abrasive belt comprising an endless, seamless backing; said method comprising the steps of: (a) providing a support structure having an outer periphery; (b) preparing a loop of liquid organic polymeric binder material having nonmetallic fibrous reinforcing material engulfed therein, in extension around the outer periphery of the support structure, comprising winding at least two fibrous reinforcing strands of at least two different nonmetallic compositions around the outer periphery of the support structure; (c) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless backing loop having fibrous reinforcing material engulfed therein, and an outer and an inner surface; (d) laminating a preformed sheet material, having abrasive material coated thereon, onto the outer surface of the endless, seamless backing loop having reinforcing material therein; and (e) removing the laminated backing loop from the support structure.
Claim 2
Independent Claim
144 words
A method for preparing a coated abrasive belt comprising an endless, seamless backing; said method comprising the steps of: (a) providing a support structure having an outer periphery; (b) preparing a loop of liquid organic polymeric binder material having nonmetallic fibrous reinforcing material engulfed therein, in extension around the outer periphery of the support structure, comprising winding at least two fibrous reinforcing strands of at least two different nonmetallic compositions around the outer periphery of the support structure; (c) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless backing loop having fibrous reinforcing material engulfed therein, and an outer and an inner surface; (d) laminating a preformed sheet material, having abrasive material coated thereon, onto the outer surface of the endless, seamless backing loop having reinforcing material therein; and (e) removing the laminated backing loop from the support structure.
Claim 3
Dependent Claim
29 words
The method of claim 1 wherein the step of laminating a preformed sheet material is carried out prior to the step of solidifying the liquid organic polymeric binder material.
Claim 4
Dependent Claim
21 words
The method of claim 1 wherein the fibrous reinforcing material comprises a plurality of distinct noninterlocking layers of fibrous reinforcing material.
Claim 5
Dependent Claim
30 words
The method of claim 1 wherein the fibrous reinforcing strands are coated with the liquid organic polymeric binder material prior to winding around the outer periphery of the support structure.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein at least one of the compositions of nonmetallic fibrous reinforcing strands comprises fiberglass.
Claim 7
Dependent Claim
32 words
The method of claim 1 wherein the step of winding the nonmetallic fibrous reinforcing strands comprises winding at a constant, nonzero angle relative to the parallel side edges of the backing loop.
Claim 8
Dependent Claim
69 words
The method of claim 1 wherein the step of preparing a loop of liquid organic polymeric binder material, having nonmetallic fibrous reinforcing material engulfed therein, comprises: (a) applying a fibrous mat structure around the outer periphery of the support structure; and (b) winding at least two fibrous reinforcing strands of at least two different nonmetallic compositions around the fibrous mat structure on the outer periphery of the support structure.
Claim 9
Dependent Claim
17 words
The method of claim 7 wherein the fibrous mat structure has individual parallel fibrous strands incorporated therein.
Claim 10
Dependent Claim
60 words
The method of claim 1 wherein prior to the step of preparing a loop of liquid organic polymeric binder material, the method comprises applying a sheet material to the outer periphery of the support structure, and the step of winding the fibrous reinforcing strands comprises winding the strands around the sheet material on the outer periphery of the support structure.
Claim 11
Dependent Claim
25 words
The method of claim 9 wherein the sheet material is selected from the group consisting of cloth, polymeric film, paper, vulcanized fiber, and nonwoven web.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein the liquid binder material comprises a urethane resin, an epoxy resin, or combinations thereof.
Claim 13
Dependent Claim
178 words
The method of claim 1 wherein the step of preparing a loop of liquid organic polymeric binder material, having nonmetallic fibrous reinforcing material engulfed therein, comprises: (a) applying a first layer of a solid organic polymeric binder material around the outer periphery of a support structure; (b) applying a layer of fibrous reinforcing material around the first layer of solid organic polymeric binder material on the outer periphery of the support structure by winding at least two strands of at least two different nonmetallic compositions around the solid organic polymeric binder material on the outer periphery of the support structure; (c) applying a second layer of a solid organic polymeric binder material around the first layer of solid organic polymeric binder material and the layer of fibrous reinforcing material on the support structure to form a structure of a solid organic polymeric binder material having a layer of fibrous reinforcing material therein; and (d) heating the solid organic polymeric binder material until it flows and generally forms a liquid organic polymeric binder material having fibrous reinforcing material therein.
Claim 14
Dependent Claim
22 words
The method of claim 1 wherein the preformed sheet comprises cloth, polymeric film, vulcanized fiber, or paper having abrasive material coated thereon.
Claim 15
Dependent Claim
19 words
The method of claim 1 wherein the preformed sheet is laminated to the backing loop with a urethane adhesive.
Claim 16
Dependent Claim
32 words
The method of claim 1 wherein the abrasive material comprises fused aluminum oxide, heat treated aluminum oxide, ceramic aluminum oxide, silicon carbide, aluminum zirconia, garnet, diamond, cubic boron nitride, and mixtures thereof.
Claim 17
Dependent Claim
15 words
The method of claim 15 wherein the abrasive material comprises grains, agglomerates, and multi-grain granules.
Claim 18
Dependent Claim
55 words
The method of claim 1 wherein the step of winding at least two fibrous reinforcing strands of at least two different nonmetallic compositions comprises winding them in an alternating fashion generally in the form of a helix in longitudinal extension around the length of the backing loop to form one layer of fibrous reinforcing material.
Claim 19
Dependent Claim
24 words
The method of claim 1 wherein the nonmetallic fibrous reinforcing material is placed in a nonuniform fashion across the width of the backing loop.
Claim 20
Dependent Claim
21 words
The method of claim 18 wherein the nonmetallic fibrous reinforcing material is placed only near the center of the backing loop.
Claim 21
Independent Claim
192 words
A method for preparing a coated abrasive article; said method comprising the steps of: (a) providing a collapsible drum having an outer periphery; (b) preparing a loop of liquid organic binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of the collapsible drum, said preparing step comprising the substeps of: (i) saturating a fibrous reinforcing mat structure with liquid organic thermosetting binder material prior to being applied around said periphery of said drum; and (ii) winding one or more individual fibrous reinforcing strands around said fibrous reinforcing mat structure on the outer periphery of said drum in the form of a helix extending longitudinally in one or more layers that spans the width of said loop; (c) solidifying said liquid organic thermosetting binder material to form a flexible, solidified, endless, seamless backing loop having fibrous reinforcing material engulfed therein, and an outer and an inner surface having a thickness of about 0.07-1.5 mm; (d) laminating a preformed sheet material, having abrasive material coated thereon, onto the outer surface of said endless, seamless loop having reinforcing material therein; and (e) removing the laminated backing loop from the drum.
Claim 22
Independent Claim
192 words
A method for preparing a coated abrasive article; said method comprising the steps of: (a) providing a collapsible drum having an outer periphery; (b) preparing a loop of liquid organic binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of the collapsible drum, said preparing step comprising the substeps of: (i) saturating a fibrous reinforcing mat structure with liquid organic thermosetting binder material prior to being applied around said periphery of said drum; and (ii) winding one or more individual fibrous reinforcing strands around said fibrous reinforcing mat structure on the outer periphery of said drum in the form of a helix extending longitudinally in one or more layers that spans the width of said loop; (c) solidifying said liquid organic thermosetting binder material to form a flexible, solidified, endless, seamless backing loop having fibrous reinforcing material engulfed therein, and an outer and an inner surface having a thickness of about 0.07-1.5 mm; (d) laminating a preformed sheet material, having abrasive material coated thereon, onto the outer surface of said endless, seamless loop having reinforcing material therein; and (e) removing the laminated backing loop from the drum.
Claim 23
Dependent Claim
27 words
The method of claim 20, wherein said loop comprises about 50-95 wt. % said solidified organic binder material based on the total weight of said formed loop.
Claim 24
Dependent Claim
27 words
The method of claim 20, wherein said loop comprises about 65-92 wt. % said solidified organic binder material based on the total weight of said formed loop.
Claim 25
Dependent Claim
27 words
The method of claim 20, wherein said loop comprises about 70-85 wt. % said solidified organic binder material based on the total weight of said formed loop.
Claim 26
Dependent Claim
29 words
The method of claim 20 wherein the step of laminating a preformed sheet material is carried out prior to the step of solidifying the liquid organic polymeric binder material.
Claim 27
Dependent Claim
30 words
The method of claim 20 wherein the fibrous reinforcing strands are coated with the liquid organic polymeric binder material prior to winding around the outer periphery of the support structure.
Claim 28
Dependent Claim
55 words
The method of claim 20 wherein the step of winding at least two fibrous reinforcing strands of at least two different nonmetallic compositions comprises winding them in an alternating fashion generally in the form of a helix in longitudinal extension around the length of the backing loop to form one layer of fibrous reinforcing material.
References Cited (Backward Citations)
US289879A
Cited
USRE25587E
Cited
US1412309A
Cited
US1676845A
Cited
US1924355A
Cited
US2032356A
Cited
US2349365A
Cited
US2333035A
Cited
US2209074A
Cited
US2404207A
Cited
US2356249A
Cited
US2356866A
Cited
US2391731A
Cited
US2411724A
Cited
US2468853A
Cited
US2590697A
Cited
US2682733A
Cited
US2712987A
Cited
US2704735A
Cited
US2785442A
Cited
US2773540A
Cited
US2743559A
Cited
US2999780A
Cited
US2995176A
Cited
US3030743A
Cited
US2983637A
Cited
US3166388A
Cited
US3276852A
Cited
US3333372A
Cited
GB1240289A
Cited
US3561938A
Cited
US3607502A
Cited
US3562968A
Cited
US3577872A
Cited
US3729873A
Cited
FR2095185A2
Cited
US4018574A
Cited
US4163647A
Cited
US3860400A
Cited
US3900355A
Cited
FR2250049A2
Cited
GB1492789A
Cited
GB1445520A
Cited
GB1475986A
Cited
US4049767A
Cited
DE2657881A1
Cited
CA1023563A
Cited
FR2396625A1
Cited
US4289168A
Cited
US4256467A
Cited
US4314827A
Cited
US4253836A
Cited
US4282011A
Cited
US4867760B1
Cited
US4867760A
Cited
US4588419A
Cited
US4394340A
Cited
US4455343A
Cited
US4373933A
Cited
EP0095055A2
Cited
US4525177A
Cited
US4554765A
Cited
EP0142140A2
Cited
US4653236A
Cited
US4734104A
Cited
WO1986002306A1
Cited
US4609581A
Cited
US4681558A
Cited
US4744802A
Cited
US4736549A
Cited
EP0213353B1
Cited
US4652275A
Cited
US4652274A
Cited
US4770671A
Cited
US4799939A
Cited
US4881951A
Cited
US4906523A
Cited
US4894280A
Cited
EP0333909A1
Cited
EP0340982A2
Cited
US5011508A
Cited
US4903440A
Cited
US5109638A
Cited
GB2240736A
Cited
US5219505A
Cited
US5137542A
Cited
US5078753A
Cited
US5108462A
Cited
US5236472A
Cited
WO1993012911A1
Cited
US5203884A
Cited
US5344688A
Cited
US5420015A
Cited
US5436063A
Cited
EP0626238A1
Cited
WO1995011111A1
Cited
WO1995022438A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |