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Fire and Sag Resistant Acoustical Panel and Substantially Clear Coating Therefor

a technology of acoustical ceiling panels and substantially clear coatings, which is applied in the field of enhanced fire rated and sag resistant acoustical ceiling panels, which can solve the problems of high flammability of natural fibers and the binder material which holds the fibers together

Inactive Publication Date: 2010-06-17
ARMSTRONG WORLD INDUSTRIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]The invention is a ceiling panel structure which includes a fire retardant mat. The fire retardant mat includes a fire retardant fiber component and a binder material which binds the fibers. The fire retardant fiber component includes natural fibers treated with a fire retardant. The fire retardant mat has flame spread index of 25 or less and a smoke generation index of 50 or less, as measured by ASTM E 84 that is uniform...

Problems solved by technology

Though renewable and environmentally friendly, natural fibers, and the binder material which holds the fibers together, are highly flammable.

Method used

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  • Fire and Sag Resistant Acoustical Panel and Substantially Clear Coating Therefor
  • Fire and Sag Resistant Acoustical Panel and Substantially Clear Coating Therefor

Examples

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Embodiment Construction

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[0008]FIG. 1 shows a fire retardant mat 1 according to an embodiment of the invention. In order to form the fire retardant mat 1, a fiber component comprising natural fibers treated with the fire retardant is mixed with a binder to form a blend. The fiber component may be mixed with the binder, for example, by carding and co-mingling the fiber component with the binder in an air stream, which separates the natural fibers from one another and intimately blends the natural fibers with the binder. The blend, or furnish, is then deposited onto a foraminous wire and is compressed to a desired final thickness. Heat is then applied through the fiber web to either melt a thermoplastic binder or cure a thermosetting binder. Alternatively, the blend may be conveyed through an oven that blows heat through the mixture while the mixture is simultaneously being compressed with one or more wire screens.

[0009]As previously mentioned, the fiber component includes natural fibers treated with a fire ...

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Abstract

A ceiling panel structure which includes a fire retardant mat, a scrim and a substantially clear scrim coating. The fire retardant mat includes a fire retardant fiber component and a binder material which binds the fibers. The fire retardant fiber component includes natural fibers treated with a fire retardant. The scrim being attached to a surface of the mat and the substantially clear coating is applied to the surface of the scrim opposite a surface of the scrim positioned next to the mat. The ceiling panel structure has flame spread index of 25 or less and a smoke generation index of 50 or less, as measured by ASTM E 84 that is uniform throughout the mat.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit under 35 U.S.C. §119(e) of U.S. provisional application Ser. No. 61 / 114,778, filed Nov. 14, 2008, entitled “Fire Retardant Mat And Ceiling Tile Structure Incorporating The Same.”BACKGROUND OF THE INVENTION[0002]The present invention is directed to fire and sag resistant panel, and, more particularly, to an enhanced fire rated, sag resistant acoustical ceiling panel having an enhanced fire rated natural fiber mat incorporated therein as well as a substantially clear coating applied thereto.[0003]Natural fibers such as hemp, kenaf, jute, sisal and flax, are gaining interest as a component in a variety of manufactured products, including products for the interior building environment, as natural fibers are a renewable resource and do not emit potentially hazardous materials into the environment. Though renewable and environmentally friendly, natural fibers, and the binder material which holds the fibers tog...

Claims

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Application Information

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IPC IPC(8): E04B1/94E04C2/26
CPCD21H13/40D21H17/66E04B9/045E04B9/001D21H21/34Y10T428/249921Y10T442/198E04B1/94E04F13/16E04C2/26B32B27/04
Inventor WIKER, ANTHONY L.WANG, MICHELLE X.
Owner ARMSTRONG WORLD INDUSTRIES
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