Method of making abrasive belt with an endless, seamless backing
First Claim
1. A method for preparing a coated abrasive belt having an endless, seamless backing;
- the method comprising;
(a) preparing a loop of liquid organic polymeric binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure;
(b) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless loop having about 40-99 wt-% solidified organic polymeric binder material with fibrous reinforcing material engulfed therein, generally parallel side edges, and inner and outer surfaces having generally no fibrous reinforcing material protruding therefrom;
(c) applying a sheet material, coated with abrasive material, to the outer surface of the backing loop; and
(d) removing the backing loop from the support structure.
1 Assignment
0 Petitions
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.
108 Citations
32 Claims
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1. A method for preparing a coated abrasive belt having an endless, seamless backing;
- the method comprising;
(a) preparing a loop of liquid organic polymeric binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure;
(b) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless loop having about 40-99 wt-% solidified organic polymeric binder material with fibrous reinforcing material engulfed therein, generally parallel side edges, and inner and outer surfaces having generally no fibrous reinforcing material protruding therefrom;
(c) applying a sheet material, coated with abrasive material, to the outer surface of the backing loop; and
(d) removing the backing loop from the support structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- the method comprising;
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22. A method for preparing a coated abrasive belt having an endless, seamless backing;
- the method comprising;
(a) preparing a loop of liquid organic polymeric binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure;
(b) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless loop having solidified organic polymeric binder material with fibrous reinforcing material engulfed therein, generally parallel side edges, and inner and outer surfaces having generally no fibrous reinforcing material protruding therefrom;
wherein the liquid organic polymeric binder material is a thermosetting resin selected from the group consisting of phenolic resins, amino resins, polyester resins, aminoplast resins, urethane resins, melamine-formaldehyde resins, epoxy resins, acrylated isocyanurate resins, urea-formaldehyde resins, isocyanurate resins, acrylated urethane resins, acrylated epoxy resins and mixtures thereof;
(c) applying a sheet material, coated with abrasive material, to the outer surface of the backing loop; and
(d) removing the backing loop from the support structure. - View Dependent Claims (23, 24)
- the method comprising;
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25. A method for preparing a coated abrasive belt having an endless, seamless backing;
- the method comprising;
(a) preparing a loop of liquid organic polymeric binder material, having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a support structure;
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 distinct noninterlocking layers of fibrous reinforcing material comprises one or more fibrous reinforcing strands wrapped in longitudinal extension around the length of the backing loop;
(b) solidifying the liquid organic binder material to form a flexible, solidified, endless, seamless loop having about 40-99 wt-% solidified organic polymeric binder material with the plurality of distinct noninterlocking layers of fibrous reinforcing material engulfed therein, generally parallel side edges, and inner and outer surfaces having generally no fibrous reinforcing material protruding therefrom;
(c) applying an abrasive coating comprising applying a sheet material, coated with abrasive material, to the outer surface of the backing loop;
(d) removing the backing loop from the support structure. - View Dependent Claims (26, 27, 28, 29)
- the method comprising;
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30. A method for preparing a coated abrasive belt having an endless, seamless backing;
- the method comprising;
(a) preparing a loop of liquid organic polymeric binder material having fibrous reinforcing material engulfed therein, in extension around the outer periphery of a collapsible drum;
(b) solidifying the liquid organic polymeric binder material to form a flexible, solidified, endless, seamless loop having solidified organic polymeric binder material with fibrous reinforcing material engulfed therein, generally parallel side edges, and inner and outer surfaces having generally no fibrous reinforcing material protruding therefrom;
(c) applying a sheet material, coated with abrasive material, to the outer surface of the backing loop; and
(d) removing the backing loop from the collapsible drum. - View Dependent Claims (31, 32)
- the method comprising;
Specification