Method for making shingles using asphalt fibers

Details Method for making shingles using asphalt fibers Method for making shingles using asphalt fibers

B - Operations, Transporting

32

B

B32B 11/02 (2006.01) B32B 5/26 (2006.01) D01D 5/18 (2006.01) D04H 13/00 (2006.01) D06N 5/00 (2006.01) E04D 1/22 (2006.01) E04D 1/26 (2006.01)

Patent

CA 2161848

A method for producing asphalt fibers (26) includes supplying molten asphalt (20) to a rotating asphalt spinner (10), centrifuging asphalt fibers (22) from the asphalt spinner (10), and collecting the asphalt fibers (26). The molten asphalt (20) is supplied to the asphalt spinner (10) at a temperature within the range of from about 270°F (132°C) to about 500°F (260°C). Also disclosed is a method for integrating asphalt (20) with reinforcement fibers including the steps of establishing a downwardly moving veil of reinforcement fibers, such as glass fibers (52), and centrifuging asphalt fibers (22) from a rotating asphalt spinner (10) positioned within the veil of reinforcement fibers to integrate the asphalt (20) with the reinforcement fibers. A method for making an asphalt roofing shingle (84) includes the steps of assembling together a mat of asphalt fibers (34) with a mat of reinforcement fibers, coating the assembled mats (70) to form an asphalt-coated sheet, applying granules (80) to the asphalt-coated sheet, and cutting (86) the asphalt-coated sheet into roofing shingles (84). The invention also includes the asphalt roofing shingle (84) made by this process. Further, the invention includes asphalt highway reinforcement products (116) containing asphalt fibers (26), and the method of making such products.

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