Method and apparatus for manufacturing a granule-covered...

B - Operations – Transporting – 32 – B

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B32B 11/02 (2006.01) B05C 3/12 (2006.01) B05C 9/14 (2006.01) B05C 19/06 (2006.01) D06N 5/00 (2006.01) E04D 5/12 (2006.01)

Patent

CA 2099897

-11- ABSTRACT A method of making granule-covered roofing material comprises discharging granules onto continuously moving asphaltic material, pressing the granules into the asphaltic material, directing light toward the granule-covered asphaltic material, measuring the reflected light from the granule-covered asphaltic material, and responding to the measured reflected light by modifying a process parameter to effect a change in the reflectance of light from the granule-covered asphaltic material.

Méthode de fabrication de matériau de couverture recouvert de granules. Cette méthode comporte les étapes suivantes : déverser des granules dans un produit asphaltique en mouvement continu; exercer une pression sur les granules pour qu'elles s'enfoncent dans le produit asphaltique; diriger de la lumière vers ce produit asphaltique recouvert de granules; mesurer la lumière réfléchie par le produit asphaltique recouvert de granules; et réagir à la lumière réfléchie mesurée en modifiant un paramètre de traitement susceptible de provoquer un changement de la réflectance de la lumière du produit asphaltique recouvert de granules.

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