E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
E04D 1/20 (2006.01) B05C 19/00 (2006.01) B05C 19/06 (2006.01) E04D 3/32 (2006.01)
Patent
CA 2169598
A device is provided for placing sharply demarcated patches on roofing products such as shingles or sheeting without the need for a double layer of asphalt. After the base sheet has been covered with a layer of coating asphalt, granules to form the patch are dropped on the base sheet through a hole in a belt which moves parallel to and just above the base sheet. The moving hole in the belt ensures that the patches will have sharp leading and trailing edges. The belt can have several holes for different size patches, and/or different blends of granules can be applied through the same or different holes. After the patches have been applied, the remainder of the sheet is covered with granules. Alternatively, the granules which drop on the spaces on the belt between the belt openings can be applied to the base sheet to form sharp edged patches, while the granules dropping through the holes in the belt can be removed and collected for re-use.
Bereskin & Parr
Iko Industries Ltd.
LandOfFree
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