Coated abrasive belt with an endless seamless backing and method

Details Coated abrasive belt with an endless seamless backing and method Coated abrasive belt with an endless seamless backing and method

1998-07-16

2000-05-23

Marcheschi, Michael

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51297, 51298, 51293, B24D 1102, B24D 1106

Patent

active

060661887

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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