Roofing membrane with integrated surface reinforcement

Patent metadata

Field	Value
Publication number	US-11814847-B2
Application number	US-202318106738-A
Country	US
Kind code	B2
Filing date	Feb 7, 2023
Priority date	Apr 8, 2021
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

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:

1. A method for using a roof membrane comprising:
a) providing 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 that is releasably positioned on a bottom surface of said bitumen compound layer; 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. %

Antioxidant
   0-5 wt. %

UV Stabilizer
   0-5 wt. %

Cross-Linker
  0-10 wt. %

Biocide
   0-5 wt. %

Coloring Agent
   0-5 wt. %

Metal Flakes
   0-5 wt. %

Adhesion Enhancer
   0-5 wt. %

Fire Retardant
  0-25 wt. %

Tackifying Agent
   0-5 wt. %

Softening Agent
   0-5 wt. %

Wax
   0-5 wt. %

Acid
   0-5 wt. %

Internal Reinforcement Fiber
  0-30 wt. %;

and wherein said weight percentage exclude any internal reinforcement layer in said bitumen compound layer; and
b) applying said surface-reinforced bitumen roofing membrane on to a roof surface.

2. The method 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. %

Hydrocarbon Resin or Process Oil
  0-15 wt. %

Antioxidant
   0-1 wt. %

UV Stabilizer
   0-1 wt. %

Biocide
   0-1 wt. %

Fire Retardant
0.05-11 wt. %:

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

3. The method as defined in claim 1 , wherein said fiber mat is 2-60 mil in thickness.

4. The method as defined in claim 1 , wherein said fiber mat is a woven mat.

5. The method as defined in claim 1 , wherein said fiber mat includes a non-woven mat.

6. The method as defined in claim 1 , including a release liner releasably adhered to a top surface of said fiber mat, said release film has a thickness of 1-20 mil.

7. The method as defined in claim 1 , wherein said release liner is treated with silicone.

8. The method as defined in claim 1 , further including a liquid applied coating that partially or fully encapsulates or impregnates said fiber mat.

9. The method as defined in claim 1 , wherein said fiber mat extends beyond a first side edge of said bitumen compound layer along a longitudinal length of said bitumen compound layer.

10. The method as defined in claim 1 , wherein said fiber mat is spaced inwardly from a first side edge of said bitumen compound layer to form a lap line region along said longitudinal length of said of said bitumen compound layer.

11. The method as defined in claim 10 , wherein a release liner that is releasably positioned on a top surface of said lap line region.

Assignees

• Garland Ind Inc

Inventors

• Geyer Julie Anne
• Rus Melissa
• Smith Jason

Classifications

• E04D5/10 Primary

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

• B32B5/022

  Non-woven fabric · CPC title

• B32B5/024

  Woven fabric · CPC title

• B32B7/03

  with respect to the orientation of features (direction of fibres or filaments B32B5/12) · CPC title

• B32B7/05

  the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection (using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14) · CPC title