Blend drop conveyor for deposition granules onto an asphalt coated sheet
AssigneeOwens Corning Fiberglas Technology, Inc.
InventorDavid P. Aschenbeck
Life of this patent
Estimating the term…
Abstract
A method of applying blend drop granules to an asphalt coated sheet includes moving an asphalt coated sheet in a machine direction, depositing a blend drop of granules on a blend drop conveyor that is moving at a first speed, changing the speed of the blend drop conveyor to a second speed that is closer to the speed of the moving asphalt coated sheet than is the first speed, and releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
Claims24
A method of applying patches of blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- depositing a blend drop of granules on a blend drop conveyor that is moving at a first speed;
- after said step of depositing said granules on said blend drop conveyor, thereafter changing a speed of the blend drop conveyor to a second speed that approximates the speed of the moving asphalt coated sheet than is the first speed;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet to form a patch of blend drop granules on the sheet, and reducing the speed of the blend drop conveyor prior to depositing another blend drop of granules thereon.
A method of applying patches of blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- depositing a blend drop of granules on a blend drop conveyor that is stationary;
- after said step of depositing said granules on said blend drop conveyor, thereafter accelerating the blend drop conveyor to a speed that approximates a speed of the moving asphalt coated sheet;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet, to form a patch of blend drop granules on the sheet, and reducing the speed of the blend drop conveyor prior to depositing another blend drop of granules thereon.
A method of applying blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- providing a blend drop conveyor that has a surface having a plurality of cells for containing the blend drop granules, the cells being shaped to handle an acceleration of at least two times the acceleration of gravity when filled halfway with granules;
- depositing a blend drop of granules on the blend drop conveyor;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
A method of applying blend drop granules to an asphalt coated sheet comprising:
- moving an asphalt coated sheet in a machine direction;
- providing a blend drop conveyor that has a surface having a plurality of cells for containing the blend drop granules;
- depositing a blend drop of granules on the blend drop conveyor, wherein a first blend drop pattern is provided by a first granule feeding apparatus, and a second blend drop pattern is provided by a second granule feeding apparatus, with both the first granule feeding apparatus and the second granule feeding apparatus using the same blend drop conveyor;
- and
- releasing the blend drop from the blend drop conveyor for contact with the asphalt coated sheet.
Dependencies are inferred from the claim text.