초록 ▼

A self-adhering modified bituminous roof covering composite that comprises a thermoplastic (APP), elastomeric (SBS) or TPO modified bitumen compound on the front side, and a factory-applied self-adhesive compound on the back side of a reinforcement carrier sheet, with factory-applied tracts of adhes

A self-adhering modified bituminous roof covering composite that comprises a thermoplastic (APP), elastomeric (SBS) or TPO modified bitumen compound on the front side, and a factory-applied self-adhesive compound on the back side of a reinforcement carrier sheet, with factory-applied tracts of adhesive on the side lap and end lap sections of each roll to enhance adhesion. A method of manufacturing such composite comprising coating an APP or SBS or TPO compound on the upper surface and affixing a self-adhesive compound to the lower surface of a reinforcement carrier support sheet, coating an adhesive on the side lap and end lap areas, applying a release liner to the tacky self-adhesive layer, and applying release films to the side and end laps during manufacture, stripping the release liner, selvage release film and end lap film from the membrane immediately prior to use, subsequently placing the exposed self-adhesive side of the membrane directly on to the end lap areas and side lap areas of adjacent rolls and applying force directly to the sheet to enhance the bond between the two sheets, resulting in a continuous roof covering. The present invention relates generally to residential and commercial roofing membranes.

대표청구항 ▼

1. A roofing membrane comprising:an upper layer of modified bituminous material modified with a modifier selected from the group consisting of: Atactic PolyPropylene (APP), Amorphous Poly Alpha Olefin (APOA), Thermoplastic PolyOlefin (TPO), Styrene-Butadiene-Styrene (SBS), Styrene-Ethylene-Butadiene

1. A roofing membrane comprising:an upper layer of modified bituminous material modified with a modifier selected from the group consisting of: Atactic PolyPropylene (APP), Amorphous Poly Alpha Olefin (APOA), Thermoplastic PolyOlefin (TPO), Styrene-Butadiene-Styrene (SBS), Styrene-Ethylene-Butadiene-Styrene (SEBS), and synthetic rubber, said upper layer having a longitudinally extending side lap, a lower layer of self-adhesive bituminous material comprised of asphalt, filler, and tackifier, the lower layer having an exposed lower surface is adhesive throughout substantially said lower surface, the material of said lower layer being a material that differs from the material comprising the upper layer, a reinforcing layer disposed between the lower layer and the upper layer, a coating of factory applied adhesive being present on said side lap, said coating comprised of an adhesive selected from the group consisting of: tackifying resin, pressure sensitive adhesive, and Poly Vinyl Butyral (PVB), a release film covering said coating of factory applied adhesive, and a release liner covering said lower layer, whereby adjacent and successive overlapping membranes may be connected by the factory applied adhesive to form a seal and a permanent bond upon the application of pressure, such as by a roller. 2. A roofing membrane in accordance with claim 1 wherein, said upper layer of modified bituminous material is modified with APP, and said lower layer of self-adhesive bituminous material is comprised of asphalt, filler, tackifier and PVB.3. A roofing membrane in accordance with claim 1, wherein said coating of adhesive is covered with a first removable selvage release film, and said upper layer has an end lap coated with factory applied adhesive in one or more strips each of which is covered with a second removable end lap release film, and said lower layer of self-adhesive bituminous material is covered with a release liner.4. A roofing material in accordance with claim 3 wherein, said first and second films and said release liner are made of a material selected from the group consisting of siliconized polypropylene, siliconized polyester, and siliconized Kraft paper.5. A roofing material in accordance with claim 1, wherein said upper layer of modified bituminous material is modified with APP, and said lower layer of self-adhesive bituminous material is comprised of asphalt, filler, and tackifier, and said first and said second coating of factory applied adhesive is a pressure-sensitive adhesive.6. A roofing material in accordance with claim 1, wherein said upper layer of modified bituminous material is modified with SBS, and said first and said second coating of factory applied adhesive is a pressure-sensitive adhesive.7. A roofing membrane in accordance with claim 1, wherein said first and said second coating of factory applied adhesive is a Styrene-Isoprene-Styrene rubber-based adhesive.8. A roofing membrane in accordance with claim 3, wherein said strips of coating of factory adhesive are 0.5 inches to 1.5 inches in width each, and said strips on said side lap and said end lap comprise at least 40 grams of adhesive per 10 m of length of said membrane.9. A roof covering as described in claim 1, wherein:a surfacing agents is imbedded in said upper layer adjacent to said side lap. 10. A roofing membrane comprising:an upper layer of modified bituminous material, said upper layer having a longitudinally extending side lap and a transversely extending end lap; a lower layer of self-adhesive bituminous material, a first coating of factory applied adhesive being present on said side lap, a second coating of factory applied adhesive being present on said end lap, said first and second coating intersecting, a release film covering each of said first and second coating, and a release liner covering said lower layer, said upper layer of modified bituminous material being modified with a modifier selected from the group consisting of: Atactic PolyPropylene (APP), Amorphous Poly Alpha Olefin (APOA), Thermoplastic PolyOlefin (TPO), Styrene-Butadiene-Styrene (SBS), Styrene-Ethylene-Butadiene-Styrene (SEBS), and synthetic rubber, and said lower layer of self-adhesive bituminous material is comprised of asphalt, filler, tackifier and PVB, said lower layer being made of a material that differs from the material comprising the upper layer, a reinforcing layer disposed between the lower layer and the upper layer, said first and second adhesive coatings being comprised of an adhesive selected from the group consisting of: tackifying resin, pressure sensitive adhesive, and Poly Vinyl Butyral (PVB), and said first and second coating is applied in a plurality of strips along a side lap and an end lap of said upper layer of modified bituminous material, and said strips extending along said end lap are intersecting with strips extending along said side lap, said adhesive coated side lap of said upper layer is covered with a first removable selvage release film, and said adhesive coated end lap of said upper layer is covered with a second removable end lap release film, and said lower layer of self-adhesive bituminous material is covered with a release liner, and said first and second release films and said release liner being made of a material selected from the group consisting of siliconized polypropylene, siliconized polyester, and siliconized Kraft paper whereby adjacent and successive overlapping membranes may be connected by the factory applied adhesive to form a seal and a permanent bond upon the application of pressure, such as by a roller. 11. A roofing membrane in accordance with claim 10, wherein said first and second coating of factory applied adhesive are 0.5 inches to 1.5 inches in width each, and said coatings comprise at least 40 grams of adhesive per 10 m of length of said membrane.12. A roof covering as described in claim 10, wherein:a surfacing agents is imbedded in said upper layer adjacent to said end lap and said side lap.