Composite membrane for building applications

Patent metadata

Field	Value
Publication number	US-12428843-B2
Application number	US-202318342573-A
Country	US
Kind code	B2
Filing date	Jun 27, 2023
Priority date	Sep 30, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A roofing composite membrane includes a base layer including a first thermoplastic polyolefin. A weight of the base layer is between 5 and 25 grams per square foot. A coating layer at least partially coats the base layer. The coating layer includes at least one inorganic additive, and a second thermoplastic polyolefin including polypropylene and having a melt flow rate between 0.5 grams per 10 minutes and 12 grams per 10 minutes.

First claim

What is claimed is:

1. A roofing system, comprising:
a steep sloped roof comprising a substrate;
a roofing composite membrane installed on the substrate, wherein the roofing composite membrane comprises:
a first layer comprising a polymer material;
wherein the first layer further comprises a plurality of pockets spaced along at least one side thereof;

a second layer covering the first layer, thereby to form a plurality of closed pockets; and
a gas trapped within the plurality of closed pockets, thereby to form a plurality of gas-filled pockets;

a roofing shingle installed directly on the roofing composite membrane
wherein the roofing shingle is an outermost layer and; and
wherein the roofing shingle is exposed to environment.

2. The roofing system of claim 1 , wherein the roofing composite membrane is configured to absorb and dissipate energy from an object impacting the roofing composite membrane sufficient to exhibit an impact resistance of at least a class 3 rating as measured according to UL 2218 Test Standard for Impact Resistance of Prepared Roof Covering Materials.

3. The roofing system of claim 1 , wherein the gas comprises air.

4. The roofing system of claim 1 , wherein the second layer comprises at least one of thermoplastic polyolefin (TPO) or polyvinylchloride (PVC).

5. The roofing system of claim 1 , wherein the second layer comprises at least one of a thermoplastic or a thermoset.

6. The roofing system of claim 1 , wherein each of the gas-filled pockets of the plurality of gas-filled pockets has a circular shape, diamond shape, square shape, or rectangular shape.

7. The roofing system of claim 1 , wherein the roofing composite membrane comprises a plurality of passages between the gas-filled pockets of the plurality of gas-filled pockets.

8. The roofing system of claim 1 , wherein the roofing composite membrane has a thickness of 1/16″ to ½″.

9. The roofing system of claim 1 , wherein the first layer comprises a plurality of ribs, wherein the plurality of ribs defines the plurality of pockets.

10. The roofing system of claim 1 , wherein an area of the plurality of gas-filled pockets is 30% of an area of the first layer.

11. A roofing system, comprising:
a sloped roof comprising a substrate;
a roofing composite membrane installed on the substrate, wherein the roofing composite membrane comprises:
a first layer,
wherein the first layer further comprises a plurality of pockets spaced along at least one side thereof;

a second layer covering the first layer, thereby to form a plurality of closed pockets;
a gas trapped within the plurality of closed pockets, thereby to form a plurality of gas-filled pockets;

an asphaltic roofing shingle installed directly on the roofing composite membrane
wherein the roofing shingle is an outermost layer; and
wherein the roofing shingle is exposed to environment.

12. The roofing system of claim 11 , wherein the first layer comprises at least one of plastic, rubber, paper, cardboard, or metal.

13. The roofing system of claim 11 , wherein the plurality of gas-filled pockets is configured to be compressible and dissipate energy when impacted by an object.

14. The roofing system of claim 11 , wherein the gas comprises air.

15. The roofing system of claim 11 , wherein the second layer comprises at least one of thermoplastic polyolefin (TPO) or polyvinylchloride (PVC).

16. The roofing system of claim 11 , wherein the second layer comprises at least one of a thermoplastic or a thermoset.

17. The roofing system of claim 11 , wherein each of the gas-filled pockets of the plurality of gas-filled pockets has a circular shape, diamond shape, square shape, or rectangular shape.

18. The roofing system of claim 11 , wherein the roofing composite membrane comprises a plurality of passages between the gas-filled pockets of the plurality of gas-filled pockets.

19. The roofing system of claim 11 , wherein the roofing composite membrane has a thickness of 1/16″ to ½″.

20. The roofing system of claim 11 , wherein the first layer comprises a plurality of ribs, wherein the plurality of ribs defines the plurality of pockets.

Assignees

• Bmic Llc

Inventors

• Yang Li-Ying
• Avitabile Jeffrey
• Nigro Joseph
• Podewils Daniel
• Davis Brian A
• Anderson Eric R
• Gimpert Matthew
• Zheng Yan
• Duffy Brian E
• Xiao Yixi

Classifications

• B32B3/12

  characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure · CPC title

• B29K2105/0854

  in the form of a non-woven mat · CPC title

• B29K2023/12

  PP, i.e. polypropylene · CPC title

• B32B2419/06

  Roofs, roof membranes · CPC title

• E04D5/10

  by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen · CPC title