| abstract |
The present invention relates to a method of manufacturing an insulating product based on mineral fibers bonded with a bio-sourced organic binder. The method enables the manufacture of an insulation product comprising acid-sensitive inorganic fibers without said fibers being altered by the acidity of the organic binder. The method comprises the following steps: a. applying a sizing composition to said mineral fibers, b. forming an assembly of said mineral fibers, c. heating said assembly of mineral fibers until said sizing composition is hardened, said process being characterized by the fact that: - said sizing composition comprises the following constituents within the limits defined below, expressed as mass fractions referred to total weight of the composition: o from 80% to 98% water, o from 2% to 20% of water-soluble poly (furfuryl alcohol) and o less than 0.5% of furfuryl alcohol, and - said mineral fibers are aluminosilicate glass fibers comprising aluminum oxide, Al 2 O 3 , in a mass fraction of between 14% and 28%. |