Method of manufacturing roofing shingles having multiple ply appearance
AssigneeCertain Teed Corporation
InventorRobert L. Kopenhaver
Life of this patent
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Abstract
An improved apparatus for manufacturing roofing shingles having multiple ply appearance, in which an elongated strip of a dry organic or mineral material previously saturated in an asphalt tank and with at least one uniform longitudinally continuous strip of a first coating of granules is fed into the apparatus. The apparatus automatically and repeatedly applies spaced apart bands of varying widths of an adhesive material onto the first coating of granules. A second coating of granules is then automatically applied by the improved apparatus to the asphaltic bands. The application of the adhesive bands and the subsequent granule distribution are synchronized so that the granules are distributed only upon the bands of adhesive.
Claims4
An improved method for manufacturing roofing shingles from dry roofing material comprising, the steps of, continuously feeding dry roofing material, saturating the dry roofing material with asphalt, automatically applying a first uniform, longitudinal adhesive coating to the previously saturated material, automatically applying a first continuous coating of granules to said adhesive coating, and cutting said material into shingles of a given length and a given width, wherein the improvement comprises, after the applying of the first coating of granules and prior to cutting said material into shingles, the step of automatically and periodically applying a repeated series of spaced apart bands of adhesive upon the first coating of granules, with the series of bands of adhesive material having various widths and being periodically applied at a predetermined periodicity such that the series of bands are applied to the first coating of granules over a length different than the given length of the shingle, whereby varying portions of said series of bands will be present on each of said given lengths of shingles, and automatically distributing granules in conjunction with the applying of the bands of adhesive such that granules are only distributed upon said bands of adhesive.
An improved method for manufacturing roofing shingles from dry roofing material comprising, the steps of, continuously feeding dry roofing material, saturating the dry roofing material with asphalt, automatically applying a first uniform, longitudinal adhesive coating to the previously saturated material, automatically applying a first continuous coating of granules to said adhesive coating, and cutting said material into shingles of a given length and a given width, wherein the improvement comprises, after the applying of the first coating of granules and prior to cutting said material into shingles, the step of automatically and periodically applying a repeated series of spaced apart bands of granules to the first continuous coating of granules, said series of bands having various widths and being periodically applied along said first continuous coating at a predetermined periodicity such that the series of bands are applied to the first coating of granules over a length different than the given length of the shingle, whereby varying portions of said series of bands will be present on each of said given lengths of shingles.
Dependencies are inferred from the claim text.