Hot bitumen compatible EPDM roofing sheet

• US 6,764,733 B1
• Filed: 01/26/1999
• Issued: 07/20/2004
• Est. Priority Date: 01/26/1999
• Status: Expired due to Term

• Current Assignee: Carlisle Management Company
• Original Assignee: Carlisle Management Company
• Inventors: Clarke, Steven R.
• Primary Examiner(s): Singh, Arti
• Application Number:
  US09/238,678
• Time in Patent Office: 2,002 Days
• Field of Search: 52/902, 52/911, 527/491.2, 428/36.1, 428/36.2, 428/36.91, 428/40.3, 428/54-56, 428/71, 428/74, 428/141, 428/142, 428/144, 428/147, 428/295.1, 428/297.1, 428/343, 428/346, 428/384, 428/489, 442/43, 442/45, 442/48, 442/58, 442/65, 442/67, 442/149, 442/150, 442/164, 442/170, 442/171, 442/180, 442/284, 442/288, 442/290, 442/293, 442/298, 442/299, 442/300, 442/320, 442/326, 442/394, 442/396, 442/397, 442/399
• US Class Current: 428/40.3
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2305/20 in the form of a non-woven mat
• CPC Class Codes: B32B 2419/06 Roofs, roof membranes
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: E04D 5/10 by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
• CPC Class Codes: Y10T 428/141 Bituminous
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/16 Two dimensionally sectional layer
• CPC Class Codes: Y10T 428/161 with frame, casing, or perimeter structure
• CPC Class Codes: Y10T 428/162 Transparent or translucent layer or section
• CPC Class Codes: Y10T 428/163 Next to unitary web or sheet of equal or greater extent
• CPC Class Codes: Y10T 428/164 Continuous two dimensionally sectional layer
• CPC Class Codes: Y10T 428/166 Glass, ceramic, or metal sections [e.g., floor or wall tile, etc.]
• CPC Class Codes: Y10T 428/167 Cellulosic sections [e.g., parquet floor, etc.]
• CPC Class Codes: Y10T 428/168 Nonrectangular
• CPC Class Codes: Y10T 428/169 Sections connected flexibly with external fastener
• CPC Class Codes: Y10T 428/17 Three or more coplanar interfitted sections with securing means
• CPC Class Codes: Y10T 428/18 Longitudinally sectional layer of three or more sections
• CPC Class Codes: Y10T 428/183 Next to unitary sheet of equal or greater extent
• CPC Class Codes: Y10T 428/187 Continuous sectional layer
• CPC Class Codes: Y10T 428/19 : Sheets or webs edge spliced or joined
• CPC Class Codes: Y10T 428/192 : Sheets or webs coplanar
• CPC Class Codes: Y10T 428/2967 : Synthetic resin or polymer
• CPC Class Codes: Y10T 428/2969 : Polyamide, polyimide or polyester
• CPC Class Codes: Y10T 428/2971 : Impregnation
• CPC Class Codes: Y10T 428/2973 : Particular cross section
• CPC Class Codes: Y10T 428/2975 : Tubular or cellular
• CPC Class Codes: Y10T 428/2976 : Longitudinally varying
• CPC Class Codes: Y10T 442/172 : Coated or impregnated
• CPC Class Codes: Y10T 442/176 : Three or more layers
• CPC Class Codes: Y10T 442/181 : Bitumen coating or impregnation
• CPC Class Codes: Y10T 442/198 : Coated or impregnated
• CPC Class Codes: Y10T 442/3854 : Woven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/3862 : Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 442/387 : Vinyl polymer or copolymer sheet or film [e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.]
• CPC Class Codes: Y10T 442/3878 : Fluorinated olefin polymer or copolymer sheet or film [e.g., Teflon@, etc.]
• CPC Class Codes: Y10T 442/3886 : Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.]
• CPC Class Codes: Y10T 442/3894 : Amide condensation polymer sheet or film [e.g., nylon 6, etc.]
• CPC Class Codes: Y10T 442/3902 : Polyimide sheet or film
• CPC Class Codes: Y10T 442/3911 : Natural or synthetic rubber sheet or film
• CPC Class Codes: Y10T 442/674 : Nonwoven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/675 : Ester condensation polymer sheet or film [e.g., polyethylene terephthalate, etc.]
• CPC Class Codes: Y10T 442/676 : Vinyl polymer or copolymer sheet or film [e.g., polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, etc.]
• CPC Class Codes: Y10T 442/677 : Fluorinated olefin polymer or copolymer sheet or film [e.g., TeflonR, etc.]
• CPC Class Codes: Y10T 442/678 : Olefin polymer or copolymer sheet or film [e.g., polypropylene, polyethylene, ethylene-butylene copolymer, etc.]
• CPC Class Codes: Y10T 442/679 : Natural or synthetic rubber sheet or film

Abstract

A roof membrane and a roof system employing a EPDM membrance which is compatible with a bituminous adhesive. The membrance includes an outer layer of polymeric layer such as EPDM bonded to a polyester protective layer which is in turn bonded to a fleecy material. This can be adhered to a roof deck surface using hot asphalt or bitumen which bonds the fleecy material to the roof deck in turn holding the EPDM in place. The polyester layer prevents the asphaltic material from attacking and dissolving the EPDM with the fleecy material providing good adhesion between the polyester and the EPDM.

Claims

1. A roof membrane which is compatible with bituminous adhesives comprising:

an outer layer membrane selected from the group consisting of EPDM, EPM, TPO, PVC, and CSPE;

a protecting layer bonded to a surface of said outer layer membrane wherein said protective layer is resistant to bituminous adhesives;

said protective layer in turn bonded to a fleecy layer.

2. The roof membrane claimed in claim 1 wherein said protective layer is a polar polymeric material.

3. The roof membrane claimed in claim 1 wherein said protective layer is selected from the group consisting of polyester, polyurethane, and polyether.

4. The roof membrane claimed in claim 1 wherein said outer layer membrane is EPDM.

5. The roof membrane claimed in claim 4 wherein said fleecy layer is a non-woven polyester.

6. The roof membrane claimed in claim 1 wherein said outer layer membrane is a thermoplastic olefin.

7. A roof membrane which is compatible with bituminous adhesives comprising:

an outer layer membrane selected from the group consisting of EPDM, EPM, TPO, PVC and CSPE;

a protective layer bonded to a surface of said outer membrane wherein said protective layer is resistant to bituminous adhesive;

a first adhesive layer bonding said outer layer membrane to said protective layer; and

said protective layer in turn bonded to a fleecy layer.

8. The roof membrane claimed in claim 7 further comprising a second adhesive layer bonding said protective layer to said fleecy layer.

9. The roof membrane claimed in claim 8 wherein said first and second adhesive layers are thermoplastic adhesive layers.

10. A roof structure comprising a roof deck and a roof membrane;

said roof membrane comprising an outer EPDM layer bonded to a protective layer, said protective layer comprising a polar polymer resistant to bituminous adhesive;

a fleecy layer bonded to said protective layer wherein said fleecy layer is in turn bonded to said roof deck by a bituminous adhesive layer.

11. The structure claimed in claim 10 wherein said protective layer is a polyester polymeric material and wherein said EPDM is bonded to said protective layer by a thermoplastic adhesive.