Coating processes – Solid particles or fibers applied – Roofing produced
Reexamination Certificate
2007-07-03
2009-06-02
Parker, Frederick J (Department: 1792)
Coating processes
Solid particles or fibers applied
Roofing produced
C427S186000
Reexamination Certificate
active
07541059
ABSTRACT:
An asphalt-based roofing material includes a coating having a top portion containing a mixture of asphalt and igneous and/or metamorphic rock particles, while the mat portion of the coating contains a mixture of asphalt and a filler which contains less than 10% igneous and/or metamorphic rock particles. In other embodiments, the top portion but not the bottom portion of the coating meets or exceeds a pliability standard, passes a weathering performance test, or has a high solar reflectance. In another embodiment relating to a laminated roofing material, the top portion but not the bottom portion has viscoelastic properties effective to prevent the coating from sticking to an adjacent shingle in a bundle. The invention also relates to a continuous process of applying first and second coatings to a mat for manufacturing a roofing material. In a first coating operation, a first asphalt-based coating is continuously applied to a first surface of the mat so that the first coating saturates the mat and forms a layer on the first surface. In a second coating operation, a second asphalt-based coating is continuously applied to a second surface of the mat so that the second coating forms a layer on the second surface. The second coating has different properties from the first coating.
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Kirk-Othmer Encyclo. of Chem. Tchnology, 4th Ed., vol. 6, pp. 609-621, 1993.
Aschenbeck David P.
Miller Carla A.
Ollett David B.
Dottavio James J.
Drew Joan N.
Owens Corning Intellectual Capital LLC
Parker Frederick J
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