Coating processes – Solid particles or fibers applied – Roofing produced
Patent
1995-06-07
1996-08-20
Beck, Shrive
Coating processes
Solid particles or fibers applied
Roofing produced
427420, B05D 130
Patent
active
055477070
ABSTRACT:
A method and apparatus for applying granules to a coated asphalt sheet to form at high production speeds a variegated pattern having uniform edges between areas of different colored granules. Granules of a first color or color blend are applied to spaced first areas on a moving, tacky, asphaltic strip by dropping the granules onto the moving strip. The leading and/or trailing edges of each granule drop are trimmed off by cutting or deflecting to provide predetermined sharp leading and/or trailing edges to the first areas. Granules of a second color or color blend are then deposited on the strip by dropping on tacky second areas between the spaced first areas. If desired, one or both edges of the second color granule drops also may be trimmed, the second color granules may be deposited on only a portion of the tacky strip areas between the spaced first areas, and additional color granules may be applied to the remaining tacky areas to form shingles with three or more colored areas.
REFERENCES:
patent: 1379368 (1921-05-01), Speer
patent: 2111761 (1938-03-01), Eckert
patent: 2302183 (1942-11-01), Burns
patent: 2905569 (1959-09-01), Zitke
patent: 4647471 (1987-03-01), Jenkins
patent: 5283080 (1995-02-01), Lamb et al.
patent: 5405647 (1995-04-01), Grubka et al.
Belt James S.
Haubert Thomas D.
Beck Shrive
Eckert Inger H.
Gegenheimer C. Michael
Owens Corning Fiberglas Technology Inc.
Parker Fred J.
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