Fiberboard panel having improved acoustics and durability

Details Fiberboard panel having improved acoustics and durability Fiberboard panel having improved acoustics and durability

2005-07-19

2005-07-19

Dixon, Merrick (Department: 1774)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

C428S222000, C428S369000, C428S364000, C162S152000

Reexamination Certificate

active

06919132

ABSTRACT:
A fine texture fiberboard panel having a low resistivity value and a high board hardness value. The panel includes mineral fibers, perlite, cellulosic fibers, and binder. The mineral fibers comprise from about 50% to about 85%, the perlite includes from 0% to about 18%, the cellulosic fiber comprises from about 2% to about 7% and the binder includes from about 6% to about 15% of the panel on a dry solids weight basis. The concentration of mineral fibers includes from about 30% to about 65% nodulated mineral fiber. The perlite has a density in the range from about 7 to about 20 pcf.

REFERENCES:
patent: 4911788 (1990-03-01), Pittman et al.
patent: 5071511 (1991-12-01), Pittman
patent: 5250153 (1993-10-01), Izard et al.

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