Methods of making and using a self adhering roofing membrane

Patent metadata

Field	Value
Publication number	US-9528268-B2
Application number	US-201414506667-A
Country	US
Kind code	B2
Filing date	Oct 5, 2014
Priority date	May 22, 2002
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A preformed, self adhering single ply roofing membrane includes a water impermeable membrane, a pressure sensitive, hot melt adhesive adhered to one side of the water impermeable membrane, and a release liner on the side of the pressure sensitive, hot melt adhesive opposite of the water impermeable membrane. Methods of making and using this roofing membrane are provided.

First claim

That which is claimed is:

1. A process for making a self adhering roofing membrane product, said process comprising:
a) providing a water impermeable single-ply roofing membrane that comprises a thermosetting or thermoplastic material, said single-ply roofing membrane having a thickness of from 0.02 to 0.09 inches, and
b) applying to a primary surface of said single-ply roofing membrane a layer of pressure sensitive adhesive, said adhesive being free of curing agents, said layer being no more than 0.015 inches thick,
thereby providing said self adhering roofing membrane product.

2. The process of claim 1 further comprising applying a release liner over said layer of pressure sensitive adhesive.

3. The process of claim 1 wherein said the application of pressure sensitive adhesive to said single-ply roofing membrane is accomplished by a hot melt spray technique.

4. The process of claim 1 wherein the application of pressure sensitive adhesive to said single-ply roofing membrane is accomplished by a technique that comprises a slot die.

5. The process of claim 1 wherein said single-ply roofing membrane comprises a reinforcing mesh.

6. The process of claim 5 further comprising applying a release liner over said layer of pressure sensitive adhesive.

7. The process of claim 6 wherein said self adhering roofing membrane product is provided in roll form.

8. The process of claim 1 wherein said pressure sensitive adhesive is free of solvents.

9. The process of claim 1 wherein said pressure sensitive adhesive includes a copolymer selected from styrene-isoprene-styrene, styrene-butadiene-styrene, ethylene-propylene, and styrene-ethylene-butene-styrene.

10. The process of claim 9 wherein said pressure sensitive adhesive is free of solvents.

11. The process of claim 10 further comprising applying a release liner over said layer of pressure sensitive adhesive.

12. The process of claim 11 wherein said self adhering roofing membrane product is provided in roll form.

13. The process of claim 1 wherein said single-ply roofing membrane has a width of from 0.5 to 3 feet.

14. The process of claim 1 wherein said single-ply roofing membrane comprises a thermoplastic material.

15. The process of claim 14 wherein said thermoplastic material is PVC.

16. The process of claim 14 wherein said thermoplastic material is TPO.

17. The process of claim 1 wherein said single-ply roofing membrane comprises a thermosetting material.

18. The process of claim 17 wherein said thermosetting material is EPDM.

19. The process of claim 1 wherein said single-ply roofing membrane has a thickness of from 45 to 90 mils.

Assignees

• Hubbard Michael J
• Firestone Building Prod Co Llc

Inventors

• Hubbard Michael J

Classifications

• Y10T428/1476

  Release layer · CPC title

• C09J123/142

  at least partially crystalline copolymers of propene with other olefins · CPC title

• E04D5/02

  of materials impregnated with sealing substances, e.g. roofing felt · CPC title

• E04D5/148 Primary

  fastening by gluing · CPC title

• E04D11/02

  Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition (gravelling of flat roofs E04D7/00; venting or ventilation E04D13/17) · CPC title