Patent ID: 6251224
Filing Date: 2001-06-26
Classification: D21H

Abstract:
A method of making a bicomponent mat of glass fibers and wood pulp comprising the steps of:(a) forming a pulp slurry by mixing wood pulp, water, and a cationic polymer;(b) forming a glass fiber slurry by mixing together a dispersant, water, glass fibers, and a viscosity modifier;(c) combining and mixing the pulp slurry and the glass fiber slurry to provide a substantially uniform fiber dispersion having a viscosity in a range of 1.5-6.0 centipoise from which is formed a wet mat having from about 5 to about 35% weight pulp solids and from about 40 to about 90% weight glass fiber solids;(d) applying a binder to the wet met; and(e) removing any excess moisture and curing the binder.