Patent ID: 8834759
Filing Date: 2014-09-16
Classification: A62C,D04H,D21H,F16L

Abstract:
1. A method of making a gravity-laid inorganic fiber web, comprising: introducing inorganic fibers into a forming chamber that comprises a plurality of fiber-separating rollers provided in at least one row within the forming chamber, and that comprises a moving endless belt screen; mechanically separating at least some of the inorganic fibers with the fiber-separating rollers; capturing any remaining agglomerates of the inorganic fibers by the moving endless belt screen and returning the captured agglomerates to the fiber-separating rollers to be mechanically separated by the fiber-separating rollers; collecting the mechanically separated inorganic fibers as a gravity-laid inorganic fiber mat; removing the gravity-laid inorganic fiber mat from the forming chamber; and, consolidating the gravity-laid inorganic fiber mat to form a gravity-laid inorganic fiber web.