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US 5,096,759 AGranted
Laminated roofing sheet
AssigneeMineral Fiber Manufacturing Corporation
InventorsRobert S. Simpson, Robert E. Simpson
Life of this patent
Estimating the term…
Abstract
A laminated roofing material includes an aluminum foil top sheet laminated to a polyethylene film by an ionomer resin. After the sheets are bonded together they are cooled to set the resin and a bitumen coating is applied to the exposed polyethylene sheet and covered with a release paper. The roofing material is applied over an underlayment to form a roof supported by conventional sheeting material.
Claims12
A roll of laminated roofing sheet including a sheet of aluminum foil adhesively bonded to a sheet of polyethylene, said adhesive bonding being an ionomer resin,
- a coating of bitumen on said polyethylene covered by a release paper,
- said bitumen coating including a blended mixture of a straight-run, unblown asphalt with a softening point of about 100.degree.-120.degree. F. and a penetration of about 90-140 dmm;
- styrene-butadiene radial block polymer;
- aromatic processing oil;
- hydrocarbon tackifying resin;
- antioxidant;
- and silica sand,
- said bitumen coating serving as a bonding adhesive when applying the roofing sheet to a surface and also having the property of flowing into any punctures and breaks in the polyethylene sheet.
5 more elements
Dependencies are inferred from the claim text.