Fire resistant roofing products

Patent metadata

Field	Value
Publication number	US-9580902-B2
Application number	US-201414319032-A
Country	US
Kind code	B2
Filing date	Jun 30, 2014
Priority date	Apr 4, 2007
Publication date	Feb 28, 2017
Grant date	Feb 28, 2017

Abstract

A fire resistant roofing material includes a core sheet and a sheet of conductive material having a thermal conductivity greater than about 25 W/m-K. The sheet of conductive material is coextensively bonded with the core sheet, and coated with a polymer-modified bituminous material having fire-resistant properties.

First claim

The invention claimed is:

1. A method of producing a fire resistant material comprising the steps of:
(a) continuously advancing an indefinite length of a core sheet having a top surface and a bottom surface and a sheet of conductive material selected from the group consisting of aluminum wire mesh, copper wire mesh, steel wire mesh, and nonwoven mats of metal wire, having a first surface and a second surface,
(b) coextensively bonding the first surface of the sheet of conductive material to a first predetermined surface of the core sheet,
(c) forming a first predetermined bituminous layer by applying a first polymer-modified bituminous material having fire-resistant properties to the second surface of the sheet of conductive material and forming a second predetermined bituminous layer by applying a second polymer-modified bituminous material having non-fire-resistant properties and a higher oil content than the first polymer-modified bituminous material to a second predetermined surface of the core sheet, the first bituminous layer and the second bituminous layer providing a top bituminous layer and a bottom bituminous layer, and
(d) embedding granules in at least a portion of the top bituminous layer.

2. A method of producing fire resistant material according to claim 1 wherein the first predetermined surface of the core sheet is the top surface of the core sheet, the second predetermined surface of the core sheet is the bottom surface of the core sheet, the first predetermined bituminous layer is the top bituminous layer, and the second predetermined bituminous layer is the bottom bituminous layer.

3. A method of producing a fire resistant material according to claim 1 , wherein said core sheet comprises a non-woven mat.

4. A method of producing a fire resistant material according to claim 1 , wherein the core sheet and the sheet of conductive material are bonded with an adhesive.

5. A method of producing a fire resistant material according to claim 1 , wherein the core sheet and the sheet of conductive material are bonded via needle puncturing.

6. A method of producing a fire resistant material according to claim 1 , wherein the sheet of conductive material has a thermal conductivity greater than about 25 W/m-K.

7. A method of producing a fire resistant material according to claim 1 , wherein the granules embedded in the top bituminous layer form a top surface, the top surface providing solar reflectivity.

8. A method of producing a fire resistant material comprising the steps of:
(a) continuously advancing an indefinite length of a core sheet having a top surface and a bottom surface and a sheet of conductive material selected from the group consisting of aluminum wire mesh, copper wire mesh, steel wire mesh, and nonwoven mats of metal wire, having a first surface and a second surface,
(b) coextensively bonding the first surface of the sheet of conductive material to a first predetermined surface of the core sheet,
(c) forming a first bituminous layer by applying a first polymer-modified bituminous material to the second surface of the sheet of conductive material and forming a second bituminous layer by applying a second polymer-modified bituminous material having a higher oil content than the first polymer modified material to a second predetermined surface of the core sheet, the first bituminous layer and the second bituminous layer providing a top bituminous layer and a bottom bituminous layer, and
(d) embedding granules in at least a portion of the top bituminous layer.

9. A method of producing a fire resistant material according to claim 8 , wherein the granules embedded in the top bituminous layer form a top surface, the top surface providing solar reflectivity.

10. A method of producing a fire resistant material according to claim 8 , wherein the first polymer-modified bituminous material has fire-resistant properties.

11. A method of producing a fire resistant material according to claim 8 , wherein the second polymer-modified bituminous material has non-fire-resistant properties.

12. A method of producing a fire resistant material according to claim 8 , wherein said core sheet comprises a non-woven mat.

13. A method of producing a fire resistant material according to claim 8 , wherein the core sheet and the sheet of conductive material are bonded with an adhesive.

14. A method of producing a fire resistant material comprising the steps of:
(a) continuously advancing an indefinite length of a core sheet having a top surface and a bottom surface and a sheet of conductive material selected from the group consisting of aluminum wire mesh, copper wire mesh, steel wire mesh, and nonwoven mats of metal wire, and having a thermal conductivity greater than about 25 W/m-K and having a first surface and a second surface,
(b) coextensively bonding the first surface of the sheet of conductive material to a first predetermined surface of the core sheet,
(c) forming a first bituminous layer by applying a first polymer-modified bituminous material to the second surface of the sheet of conductive material and forming a second bituminous layer by applying a second polymer-modified bituminous material having a higher oil content than the first polymer modified material to a second predetermined surface of the core sheet, the first bituminous layer and the second bituminous layer providing a top bituminous layer and a bottom bituminous layer, and
(d) embedding granules in at least a portion of the top bituminous layer.

15. A method of producing a fire resistant material according to claim 14 , wherein the first polymer-modified bituminous material has fire-resistant properties.

16. A method of producing a fire resistant material according to claim 14 , wherein the granules embedded in the top bituminous layer form a top surface, the top surface providing solar reflectivity.

Assignees

• Kalkanoglu Husnu M
• Mcdonough Barbara
• Certain Teed Corp

Inventors

• Kalkanoglu Husnu M
• Mcdonough Barbara

Classifications

• B32B11/10

  next to a fibrous or filamentary layer · CPC title

• D06N5/003

  coated with bitumen · CPC title

• Y10T428/24372

  Particulate matter · CPC title

• B32B5/16

  characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)} · CPC title

• D06N5/006

  characterised by the means to apply it to a support or to another roofing membrane, e.g. self-adhesive layer or strip · CPC title