Controlled particle deposition for a roofing shingle
AssigneeBmic LLC
InventorsMing-Liang Shiao, Brian Lee
Life of this patent
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Abstract
A method includes obtaining a glass mat having a first side and a second side opposite the first side. The method includes coating the first side of the glass mat with a molten asphalt. The method includes obtaining a plurality of particles. The method further includes depositing the particles on the first side of the asphalt coated substrate. The depositing includes controlling a location of the plurality of particles on the first side of the asphalt coated substrate using an electrostatic generator, an electromagnetic generator, or a piezoelectric depositor. The method further includes forming a roofing shingle from the asphalt coated substrate having the plurality of particles as deposited.
Claims3
A method comprising:
- obtaining a glass mat substrate having a first side and a second side opposite the first side;
- coating the first side of the glass mat substrate with a molten asphalt to obtain an asphalt coated substrate;
- obtaining a plurality of fines;
- obtaining a plurality of roofing granules;
- using an electrostatic generator to deposit the plurality of fines in a first location on the first side of the asphalt coated substrate;
- wherein the first location is a nail zone;
- after depositing the plurality of fines, depositing the plurality of granules in a second location on the first side of the asphalt coated substrate,
- wherein the second location is different from the first location;
- and
- forming a roofing shingle from the asphalt coated substrate.
Dependencies are inferred from the claim text.