Coated abrasive belt with an endless seamless backing and method of preparation
First Claim
1. A coated abrasive article comprising a backing and abrasive grain on at least one surface of the backing, wherein the backing comprises:
- (a) about 40-99 wt-% of a solidified organic polymeric binder material, based upon the total weight of the backing; and
(b) an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material;
wherein the organic polymeric binder material and fibrous reinforcing material together comprise a flexible composition in the form of an endless, seamless loop having a length with parallel side edges, and inner and outer surface having no fibrous reinforcing material protruding therefrom;
wherein;
(i) the fibrous reinforcing material consists of a plurality of distinct noninterlocking layers of fibrous reinforcing material; and
(ii) at least one of the plurality of distinct noninterlocking layers of fibrous reinforcing material comprises one or more fibrous strands wrapped in longitudinal extension around the length of the backing loop.
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Accused Products
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.
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Citations
41 Claims
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1. A coated abrasive article comprising a backing and abrasive grain on at least one surface of the backing, wherein the backing comprises:
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(a) about 40-99 wt-% of a solidified organic polymeric binder material, based upon the total weight of the backing; and (b) an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material;
wherein the organic polymeric binder material and fibrous reinforcing material together comprise a flexible composition in the form of an endless, seamless loop having a length with parallel side edges, and inner and outer surface having no fibrous reinforcing material protruding therefrom;
wherein;(i) the fibrous reinforcing material consists of a plurality of distinct noninterlocking layers of fibrous reinforcing material; and (ii) at least one of the plurality of distinct noninterlocking layers of fibrous reinforcing material comprises one or more fibrous strands wrapped in longitudinal extension around the length of the backing loop. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A coated abrasive article comprising a backing and abrasive grain on at least one surface of the backing, wherein the backing comprises:
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(a) about 40-99 wt-% of a solidified organic polymeric binder material, based upon the total weight of the backing; and (b) an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material;
wherein the organic polymeric binder material and fibrous reinforcing material together comprise a flexible composition in the form of an endless, seamless loop having a length with parallel side edges, and inner and outer surface with no fibrous reinforcing material protruding therefrom;
wherein the fibrous reinforcing material consists of at least one layer of one or more fibrous stands wrapped in longitudinal extension around the length of the backing loop. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A coated abrasive article comprising a backing and abrasive grain on at least one surface of the backing, wherein the backing comprises:
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(a) about 40-99 wt-% of a solidified organic polymeric binder material, based upon the total weight of the backing; and (b) an effective amount of a fibrous reinforcing material;
wherein the organic polymeric binder material and fibrous reinforcing material together comprise a flexible composition in the form of an endless, seamless loop;
the flexible endless, seamless backing loop comprising;(i) a length with parallel side edges; and (ii) at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material;
wherein the fibrous reinforcing material comprises at lest two different compositions of fibrous strand material wrapped in longitudinal extension around the length of the backing loop. - View Dependent Claims (38, 39, 40, 41)
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Specification