Roofing membrane with integrated surface reinforcement

Patent metadata

Field	Value
Publication number	US-12252885-B2
Application number	US-202318505814-A
Country	US
Kind code	B2
Filing date	Nov 9, 2023
Priority date	Apr 8, 2021
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

A surface-reinforced bitumen roofing membrane includes at least two layers, namely 1) a bitumen compound layer, and 2) a fiber mat, and can optionally include a) an optional bleed blocker layer that is located between the bitumen compound layer and the fiber mat, b) an optional liquid applied coating that partially or fully encapsulates the fiber mat, c) an optional release liner that is releasably positioned on the bottom surface of the bitumen roofing membrane, and/or d) an optional release film that is releasably positioned on the fiber mat surface.

First claim

What is claimed is:

1. A surface-reinforced bitumen roofing membrane that includes a bitumen compound layer, a fiber mat that is position on or above at least a portion of a top surface of said bitumen compound layer, a bleed blocker layer located between said bitumen compound layer and said fiber mat, and a release liner; said release liner is a) releasably positioned on a bottom surface of said surface-reinforced bitumen roofing membrane, and/or b) releasably positioned on a top surface of said surface-reinforced bitumen roofing membrane; said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
  25-80 wt. %

Filler
 0.5-60 wt. %

Polymer Modifier
0.05-25 wt. %

Hydrocarbon Resin Process Oil
0.05-20 wt. %;

and wherein said weight percentages of said bitumen compound layer excludes any internal reinforcement layer in said bitumen compound layer.

2. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
25-60
wt. %

Filler
0.5-50
wt. %

Polymer Modifier
0.05-20
wt. %

Hydrocarbon Resin Process Oil
0.05-15
wt. %;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer.

3. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
25-55
wt. %

Filler
0.05-45
wt. %

Polymer Modifier
0.05-10
wt. %

Hydrocarbon Resin Process Oil
0.05-5
wt. %;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer.

4. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
40-80
wt. %

Filler
0-60
wt. %

Internal Reinforcement Fibers
0-30
wt. %

Polymer Modifier
1-25
wt.;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer.

5. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
25-60
wt. %

Filler
25-60
wt. %

Internal Reinforcement Fibers
0-20
wt. %

Polymer Modifier
2-20
wt. %;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer.

6. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bitumen compound layer comprises by weight percent:

Primary hydrocarbon compound
40-50
wt. %

Filler
35-50
wt. %

Internal Reinforcement Fibers
0-20
wt. %

Polymer Modifier
4-8
wt. %;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer.

7. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said fiber mat is 2-60 mil in thickness.

8. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein a thickness of said bleed blocker layer is 0.1 mil-40 mils.

9. The surface-reinforced bitumen roofing membrane as defined in claim 1 , wherein said bleed blocker layer includes a) a coating formed of a one or more materials selected from the group consisting of acrylic coating, polyvinyl alcohol coating, nitrile rubber coating, thermoplastic urethane coating, polyamide coating, vinyl acetate coating, latex coating, SBR coating, SBS coating, SEBS coating, SIS coating, natural or synthetic rubber coating, low density

Assignees

• Garland Ind Inc

Inventors

• Geyer Julie Anne
• Rus Melissa
• Smith Jason

Classifications

• B32B5/024

  Woven fabric · CPC title

• B32B2307/3065

  Flame resistant or retardant, fire resistant or retardant · CPC title

• B32B2262/101

  Glass fibres · CPC title

• B32B2255/02

  on fibrous or filamentary layer · CPC title

• B32B11/10

  next to a fibrous or filamentary layer · CPC title