Flame retardant composite sheathing

Details Flame retardant composite sheathing Flame retardant composite sheathing

2000-05-11

2001-09-11

Stephan, Beth A. (Department: 3635)

Static structures (e.g., buildings)

Disparate sheet lamina between exposed surfaces of wall,...

C052S309300, C052S309130, C052S783100, C052S796100, C428S461000, C428S511000, C428S535000

Reexamination Certificate

active

06286280

ABSTRACT:

FIELD OF THE INVENTION
This invention relates generally to a flame retardant composite sheathing. More particularly, the invention is directed to a multi-layered, laminated, composite sheathing material which prevents the passage of water therethrough and is flame retardant.
BACKGROUND OF THE INVENTION
Composite sheathing materials are widely used in the building and construction industries as roof components or panels, for sheathing the surfaces which form the exterior roof of a building. Such sheathing materials may be exposed to liquid water from rain or melting snow. Preferred sheathing materials prevent the passage of liquid water from the exterior to the interior of the building, while also providing Class C fire resistance to the roof structure. Conventional composite sheathing materials, while preventing the passage of liquid water therethrough, typically are manufactured from wood and bituminous components which may easily catch fire which spreads to the remaining building structure.
It would be desirable to prepare a composite sheathing material that would substantially prevent the passage therethrough of liquid water while also providing a Class C fire resistance rating to the roof structure.
SUMMARY OF THE INVENTION
Accordant with the present invention, there has surprisingly been discovered a composite sheathing material which is water-proof and flame retardant. The composite sheathing material, comprises:
a core layer, comprising a plurality of superposed layers of a water-resistant paperboard, said layers of water-resistant paperboard being adhered together by layers of an adhesive positioned intermediate and contacting adjacent said layers of water-resistant paperboard;
a first layer of a polyolefin adhered to a major surface of the core layer;
a metal foil adhered to the first layer of polyolefin;
a second layer of a polyolefin adhered to the metal foil; and
a layer of water-resistant liner board adhered to the second layer of polyolefin.
Also contemplated as part of the present invention is a built up roof structure including a composite sheathing material.
The inventive composite sheathing material according to the present invention is particularly useful as a component in a building roof structure.


REFERENCES:
patent: 383101 (1888-05-01), Chadd
patent: 2343740 (1944-03-01), Birmingham
patent: 2695854 (1954-11-01), Mullen
patent: 2893907 (1959-07-01), Bove
patent: 3125479 (1964-03-01), Finan
patent: 4350734 (1982-09-01), Hammond
patent: 4425746 (1984-01-01), Bonaguidi
patent: 4707961 (1987-11-01), Nunley et al.
patent: 4774148 (1988-09-01), Goto
patent: 4877476 (1989-10-01), Wolf
patent: 5096759 (1992-03-01), Simpson et al.
patent: 5231814 (1993-08-01), Hageman
patent: 5518799 (1996-05-01), Finestone et al.
patent: 5660924 (1997-08-01), Yamaji et al.
patent: 5700586 (1997-12-01), Laiho et al.
patent: 6193827 (2001-02-01), Parks et al.

Affiliated with

Also associated with

Rating

Flame retardant composite sheathing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flame retardant composite sheathing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flame retardant composite sheathing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2541844