Patent ID: 7063983
Filing Date: 2006-06-20
Classification: C08J,G01N,Y10T

Abstract:
1. A method for determining a level of binder cure in a polycarboxylic acid based binder coated fiberglass article comprising the steps of: applying a pH indicator solution to a surface of a fiberglass article having a plurality of glass fibers coated with a polycarboxylic acid based binder after at least partially curing said polycarboxylic acid based binder; observing the color of said surface of said polycarboxylic acid based binder coated fiberglass article after said pH indicator solution has been applied thereto; comparing said color of said surface to colors previously determined to correspond to pH values for said pH indicator solution to determine an estimated pH of said surface; and determining said level of binder cure from said estimated pH of said surface; wherein said applying, observing, comparing, and determining steps are conducted in-line.