Multilayer roofing sheet with mechanical interlock laminate structure

Patent metadata

Field	Value
Publication number	US-9540820-B2
Application number	US-5790608-A
Country	US
Kind code	B2
Filing date	Mar 28, 2008
Priority date	Apr 4, 2007
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A multilayer roofing sheet includes a laminate formed from an upper sheet having a textured lower surface and a lower sheet having a fusible upper surface mechanically interlocked together.

First claim

The invention claimed is:

1. Roll roofing consisting of a multilayer roofing sheet comprising:
a laminate formed from
a) an upper sheet having a textured lower surface and comprising an upper layer and a lower layer, the lower layer of the upper sheet being selected from the group consisting of non-woven webs, microporous films, and sheets having microstructured surfaces; and
b) a lower sheet having a fusible upper surface, the lower sheet comprising a lower layer and an upper layer, the upper layer having the fusible upper surface, the lower layer including a reinforcing scrim and an adhesive layer.

2. Roll roofing according to claim 1 wherein the upper layer of the multilayer roofing sheet comprises at least one polymer film formed from a polymer composition.

3. Roll roofing according to claim 2 wherein the polymer film is selected from the group consisting of polyvinyl chloride, polyethylene, polypropylene, acid-containing olefin polymers, fluoropolymers, thermoplastic olefin, thermoset polymers, acrylics, acrylonitrile-styrene-acrylate terpolymer, and acrylonitrile-ethylene-styrene terpolymer.

4. Roll roofing according to claim 2 wherein the polymer composition comprises a colorant system.

5. Roll roofing according to claim 4 wherein the colorant system comprises titanium dioxide.

6. Roll roofing according to claim 1 wherein the lower layer comprises fibers formed of a material selected from the group consisting of polyolefins, polyesters, glasses, inorganic polymers, and nylons.

7. Roll roofing consisting of a multilayer roofing sheet comprising a laminate formed from
a) an upper sheet having at least two layers and a textured lower surface, wherein the texture of the lower surface of the upper sheet is provided by a plurality of pores; and
b) a lower sheet having a fusible upper surface, the lower sheet comprising a lower layer and an upper layer, the upper layer having the fusible upper surface, the lower layer including a reinforcing scrim and an adhesive layer.

8. Roll roofing consisting of a multilayer roofing sheet comprising a laminate formed from
a) an upper sheet having a textured lower surface, wherein the texture of the lower surface of the upper sheet is provided by a process selected from the group consisting of embossing, molding, and microreplication; and
b) a lower sheet having a fusible upper surface, the lower sheet comprising a lower layer and an upper layer, the upper layer having the fusible upper surface, the lower layer including a reinforcing scrim and an adhesive layer.

9. Roll roofing according to claim 7 wherein the upper layer comprises at least one polymer film formed from a polymer composition.

10. Roll roofing according to claim 9 wherein the polymer film is selected from the group consisting of polyvinyl chloride, polyethylene, polypropylene, acid-containing olefin polymers, fluoropolymers, thermoplastic olefin, thermoset polymers, acrylics, acrylonitrile-styrene-acrylate terpolymer, and acrylonitrile-ethylene-styrene terpolymer.

11. Roll roofing according to claim 9 wherein the polymer composition comprises a colorant system.

12. Roll roofing according to claim 11 wherein the colorant system comprises titanium dioxide.

13. Roll roofing according to claim 7 wherein the lower layer comprises fibers formed of a material selected from the group consisting of polyolefins, polyesters, glasses, inorganic polymers, and nylons.

14. Roll roofing according to claim 8 wherein the upper layer comprises at least one polymer film formed from a polymer composition.

15. Roll roofing according to claim 14 wherein the polymer film is selected from the group consisting of polyvinyl chloride, polyethylene, polypropylene, acid-containing olefin polymers, fluoropolymers, thermoplastic olefin, thermoset polymers, acrylics, acrylonitrile-styrene-acrylate terpolymer, and acrylonitrile-ethylene-styrene terpolymer.

16. Roll roofing according to claim 14 wherein the polymer composition comprises a colorant system.

17. Roll roofing according to claim 16 wherein the colorant system comprises titanium dioxide.

18. Roll roofing according to claim 8 wherein the lower layer comprises fibers formed of a material selected from the group consisting of polyolefins, polyesters, glasses, inorganic polymers, and nylons.

Assignees

• Kalkanoglu Husnu M
• Jacobs Gregory F
• Certain Teed Corp

Inventors

• Kalkanoglu Husnu M
• Jacobs Gregory F

Classifications

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title

• B32B2307/724

  Permeability to gases, adsorption · CPC title

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• B32B2037/243

  Coating · CPC title

• B32B2419/06

  Roofs, roof membranes · CPC title