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AssigneeBird Incorporated
InventorsJames W. Jackson, Cecil E. Stapley, Franklin W. Wood
Estimating the term…
A method for reclaiming waste asphalt sheet material reinforced with inelastic brittle fibers, such as fiberglass, subjects the material to tearing, kneading, sheet and frictional drag forces, preferably in a kneading mixer, to reduce the material to a viscous fluid state in which the fibers have been pulverized to particles of a maximum dimension less than about 600 microns. If mineral particles of larger dimension are present in the reduced fluid material, they are crushed to filler particles of maximum dimension less than about 600 microns by passing the reduced fluid material between oppositely rotated, heated crush rolls. The novel reclaimed waste includes at least the asphalt and the pulverized fiber, may include mineral filler of maximum particle size less than 600 microns, some or all of which may be crushed mineral granules of larger maximum dimension contained in the waste material.
A method for producing a reclaimed asphalt material suitable for use in the manufacture of asphalt shingles reinforced with inelastic brittle fibers such as fiberglass, said method comprising reclaiming waste asphalt sheet material reinforced with inelastic brittle fibers such as fiberglass by passing the waste material through a kneading mixer and therein subjecting the material to tearing, kneading, shear and frictional drag forces at a temperature and for a time sufficient to reduce said material to a viscous fluid state in which said fibers have been pulverized to particles of a maximum dimension less than about 600 microns.
Reclaimed waste of asphalt sheet material reinforced with inelastic brittle reinforcing fibers such as fiberglass, comprising said fibers pulverized to a maximum particle dimension of less than about 600 microns, and said asphalt.
Reclaimed waste according to claim 11 wherein said maximum particle dimension is less than about 300 microns.
Dependencies are inferred from the claim text.