Recycled asphalt pellet with reduced airborne fiberglass
AssigneeCertainTeed Corporation
InventorsWilliam R. Bailey, William P. Dempsey
Life of this patent
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Abstract
According to one aspect, a recycled asphalt shingle pellet can include a core including a recycled asphalt shingle waste and a softening agent; and a shell including no greater than 5% recycled asphalt shingle waste. The recycled asphalt shingle pellets can be a part of a batch of recycled asphalt shingle pellets having a large fiberglass sieve factor, FL, of at least 98.2 wt. %. The batch can also have a small fiberglass sieve factor, Fs, of at least 99.1 wt. %.
Claims20
A batch of recycled asphalt shingle pellets, each pellet comprising:
- a core comprising a recycled asphalt shingle waste and a softening agent;
- a shell comprising no greater than 5% recycled asphalt shingle waste;
- wherein the batch comprises a large fiberglass sieve factor, FL, of at least 98.2 wt. %.
A batch of recycled asphalt shingle pellets, each pellet comprising:
- a core comprising a recycled asphalt shingle waste and a softening agent;
- a shell comprising no greater than 5% recycled asphalt shingle waste;
- wherein the batch comprises a small fiberglass sieve factor, Fs, of at least 99.1 wt. %.
A method of preparing a batch of asphalt pellets comprising:
- agglomerating recycled asphalt shingle material with a softening agent in a pelletizer to form asphalt pellet cores;
- agglomerating the asphalt pellet cores with a shell composition to form asphalt pellets;
- wherein the asphalt pellet shells comprises no greater than 5% recycled asphalt shingle waste.
Dependencies are inferred from the claim text.