Appeal No. 1998-2614
Application No. 08/731,713
(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 an abrasive coating to the backing loop;
and
(d) removing the backing loop from the support
structure.
Claim 52. 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 an abrasive coating to the backing loop;
and
(d) removing the backing loop from the collapsible drum.
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007