Claims
- 1. A self-adhering underlayment for tile roofing assemblies comprising:
a dual-compound composite sheet having a carrier sheet with a front side and a back side, the carrier sheet being sandwiched between a top layer and a bottom layer: the top layer comprised of a mixture of: (a) polypropylene modifiers comprised of isotactic polypropylene, ethylene-propylene copolymer, atactic polypropylene and polyethylene, (b) filler, and (c) asphalt; the bottom layer comprised of heat-and-pressure activated self-adhesive compound comprised of a mixture of: (a) styrene-butadiene-styrene copolymer, (b) styrene-isoprene-styrene copolymer, (c) hydrocarbon tackifying resins, and (d) asphalt; and the top and bottom layers forming oppositely facing upper and lower surfaces.
- 2. A self-adhering underlayment as described in claim 1, wherein:
the first top layer is comprised of a mixture of: (a) 5% to 25% polypropylene modifiers comprised of isotactic polypropylene, ethylene-propylene copolymer, atactic polypropylene and polyethylene, (b) 0% to 70% of filler, and (c) 45% to 77% asphalt; and the second bottom layer of heat-and-pressure activated self-adhesive compound is comprised of a mixture of: (a) 3% to 10% styrene-butadiene-styrene copolymer, (b) 4% to 11% styrene-isoprene-styrene copolymer, (c) 20% to 33% hydrocarbon tackifying resins, and (d) remainder asphalt.
- 3. A self-adhering underlayment as described in claim 2, wherein:
the hydrocarbon tackifying resins in the bottom layer compound is primarily Polyvinyl Butyral.
- 4. A self-adhering underlayment as described in claim 3, wherein:
the top layer has a surface feature selected from the group consisting of: (a) a stitch-bonded fabric carried by said top layer, (b) granules carried by said top layer, and (c) a film applied to said top surface, said film having an anti-skid upper surface.
- 5. A self-adhering underlayment as described in claim 1, wherein:
said filler is selected from the group consisting of: limestone, talc, fly ash, volcanic ash, graphite, carbon black, silica, china clay, fire retardants and combinations thereof.
- 6. A self-adhering underlayment as described in claim 5, wherein:
the Atactic Polypropylene top layer compound is further comprised of fire retardant filler additives selected from the group consisting of calcium borate, magnesium borate, a mixture of antimony tri-oxide and deca bromo diphenyl oxide.
- 7. A self-adhering underlayment as described in claim 1, wherein:
the Atactic Polypropylene top layer compound contains a tackifying resin.
- 8. A self-adhering underlayment as described in claim 1, wherein:
a surfacing agent is at least partly imbedded in the upper surface of the composite.
- 9. A self-adhering underlayment as described in claim 8, wherein:
the surfacing agent is selected from the group consisting of stitch-bonded polypropylene fabric and a granular material.
- 10. A self-adhering underlayment as described in claim 1, wherein:
a release liner having a contact and non-contact surface is applied to the lower surface of the composite; and the release liner is a polyester, polypropylene or polyethylene film having a siliconized contact surface and a white color non-contact surface.
- 11. A self-adhering underlayment as described in claim 1, wherein:
a side lap having a width of 3 inches to 4 inches runs longitudinally along one lengthwise edge of the composite; and an end lap having a width of 4 inches to 6 inches runs widthwise along one end of the composite.
- 12. A self-adhering underlayment as described in claim 12, wherein:
a release film is applied to the side lap and end lap.
- 13. A self-adhering underlayment as described in claim 1, wherein:
a surfacing agent comprised of a granular material is at least partly imbedded in the upper surface of the composite in areas other than said side and end laps.
- 14. A self-adhering underlayment as described in claim 1, wherein:
said carrier is made of polyester.
- 15. A self-adhering underlayment as described in claim 1, wherein:
said carrier is made of fiberglass.
- 16. A self-adhering underlayment as described in claim 1, wherein:
said carrier is made of a material selected from the group consisting of polyester and fiberglass; and a combination of polyester and fiberglass.
- 17. A self-adhering underlayment for tile roofing assemblies comprising:
a composite having a carrier sheet with a front side and a back side, the carrier sheet being sandwiched between a top layer and a bottom layer: the top layer comprised of a mixture of polypropylene modifiers comprised of isotactic polypropylene, ethylene-propylene copolymer, atactic polypropylene and polyethylene, (b) filler, and (c) bitumen; the bottom layer comprised of heat-and-pressure activated self-adhesive compound which is a mixture of: (a) styrene-butadiene-styrene copolymer, (b) styrene-isoprene-styrene copolymer, (c) hydrocarbon tackifying resins, (d) and asphalt; and the top and bottom layers forming oppositely upper and lower surfaces, said top layer having a surface feature selected from the group consisting of: (a) a stitch-bonded fabric carried by said top layer, (b) granules carried by said top layer, and (c) a film applied to said top surface.
- 18. A self-adhering underlayment as described in claim 17, wherein:
said granules extend over substantially the entire area of the upper surface of said top layer, except for a granule-free side lap and a granule-free end lap.
- 19. A self-adhering underlayment as described in claim 17, wherein:
the hydrocarbon tackifying resins in the bottom layer compound is primarily Polyvinyl Butyral.
- 20. A self-adhering underlayment as described in claim 19, wherein:
the first top layer is comprised of a mixture of: (a) 5% to 25% polypropylene modifiers comprised of isotactic polypropylene, ethylene-propylene copolymer, atactic polypropylene and polyethylene, (b) 0% to 70% of filler, and (c) 45% to 77% asphalt; and the second bottom layer of heat-and-pressure activated self-adhesive compound is comprised of a mixture of: (a) 3% to 10% styrene-butadiene-styrene copolymer, (b) 4% to 11% styrene-isoprene-styrene copolymer, (c) 20% to 33% hydrocarbon tackifying resins, and (d) remainder asphalt.
- 21. A self-adhering underlayment as described in claim 17, wherein:
said filler is selected from the group consisting of: limestone, talc, fly ash, volcanic ash, graphite, carbon black, silica, china clay, fire retardants and combinations thereof.
- 22. A self-adhering underlayment as described in claim 21, wherein:
the Atactic Polypropylene top layer compound further contains a fire retardant filler additive selected from the group consisting of calcium borate, magnesium borate, a mixture of antimony tri-oxide and deca bromo diphenyl oxide.
- 23. A self-adhering underlayment as described in claim 17, wherein:
the Atactic Polypropylene top layer compound further contains a tackifying resin.
- 24. A self-adhering underlayment as described in claim 17, wherein:
a surfacing agent is at least partly imbedded in the upper surface of the composite.
- 25. A self-adhering underlayment as described in claim 24, wherein:
the surfacing agent is a granular material.
- 26. A self-adhering underlayment as described in claim 17, wherein:
a release liner having a contact and non-contact surface is applied to the lower surface of the composite; and the release liner is a polyester, polypropylene or polyethylene film having a siliconized contact surface and a white color non-contact surface.
- 27. A self-adhering underlayment as described in claim 17, wherein:
said top layer has a side lap having a width of 3 inches to 4 inches runs longitudinally along one lengthwise edge of the composite, said side lap being free of any surface agent carried by said top layer; and said top layer has a granule-free an end lap having a width of 4 inches to 6 inches runs widthwise along one end of the composite, said end lap being free of any surface agent carried by said top layer.
- 28. A self-adhering underlayment as described in claim 26, wherein:
a release film is applied to the side lap and end lap.
- 29. A self-adhering underlayment as described in claim 17, wherein:
a surfacing agent comprised of a granular material is at least partly imbedded in the upper surface of the composite in areas other than said side and end laps.
- 30. A self-adhering underlayment as described in claim 17, wherein:
said carrier is made of polyester.
- 31. A self-adhering underlayment as described in claim 17, wherein:
said carrier is made of fiberglass.
- 32. A self-adhering underlayment as described in claim 17, wherein:
said carrier is made of a material selected from the group consisting of polyester and fiberglass and a combination of polyester and fiberglass.
- 33. A self-adhering underlayment for tile roofing assemblies comprising:
a dual-compound composite sheet having a carrier sheet with a front side and a back side, the carrier sheet being sandwiched between a top layer and a bottom layer: the top layer comprised of a mixture of: (a) polypropylene modifiers comprised of isotactic polypropylene, ethylene-propylene copolymer, atactic polypropylene and polyethylene, (b) filler, and (c) asphalt; the bottom layer comprised of heat-and-pressure activated self-adhesive compound comprised of a mixture of: (a) styrene-butadiene-styrene copolymer, (b) styrene-isoprene-styrene copolymer, (c) hydrocarbon tackifying resins, and (d) asphalt; and said filler being comprised of a material selected from the group consisting of: limestone, talc, fly ash, volcanic ash, graphite, carbon black, silica, china clay, fire retardants and combinations thereof, said top layer having a surfacing agent at least partly imbedded in the upper surface of the composite, a release liner applied to the lower surface of the composite, a side lap running longitudinally along one lengthwise edge of the top layer of the composite; and an end lap runs widthwise along one end of the composite. a release film is applied to the side lap and end lap, and said a surfacing agent being partly imbedded in the upper surface of the composite in areas other than said side and end laps. said carrier being made of a material selected from the group consisting of polyester and fiberglass and a combination of polyester and fiberglass.
- 34. A self-adhering underlayment as described in claim 33, wherein:
the top layer compound further being comprised of at least one fire retardant filler additives selected from the group consisting of calcium borate, magnesium borate, a mixture of antimony tri-oxide and deca bromo diphenyl oxide.
- 35. A self-adhering underlayment as described in claim 33, wherein:
the top layer compound is further comprised of tackifying resins.
- 36. A self-adhering underlayment as described in claim 33, wherein:
the top layer compound is further comprised of 0% to 2% tackifying resin.
- 37. A self-adhering underlayment as described in claim 33, wherein:
- 38. A self-adhering underlayment as described in claim 33, wherein:
RELATED APPLICATION
[0001] This application claims the benefit of a previously filed co-pending patent application entitled “Self-Adhered Modified Bitumen Roofing Material” filed on April. 25, 2002 and assigned Ser. No. 10/131,842.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
10131842 |
Apr 2002 |
US |
Child |
10776863 |
Feb 2004 |
US |