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US 2018/0000155 A1Published application
Composite heat source for a smoking article
AssigneePhilip Morris Products S.A.
InventorsFriedrich RAETHER, Holger Friedrich, Jens Baber
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Abstract
A composite heat source for use in a smoking article is provided, including a non-combustible porous ceramic matrix; and a particulate combustible fuel embedded within the non-combustible porous ceramic matrix. The non-combustible porous ceramic matrix is formed from one or more particulate materials having a median D50 particle size at least five times less than the median D50 particle size of the particulate combustible fuel. Preferably, the non-combustible porous ceramic matrix includes one or more transition metal oxides.
Claims14
A composite heat source for a smoking article, comprising:
- a non-combustible porous ceramic matrix;
- and
- a particulate combustible fuel embedded within the non-combustible porous ceramic matrix,
- wherein the non-combustible porous ceramic matrix is formed from one or more particulate materials having a median D50 particle size that is at least five times less than a median D50 particle size of the particulate combustible fuel, and
- wherein a volume fraction of the particulate combustible fuel embedded within the non-combustible porous ceramic matrix is less than or equal to about 50% of a bulk volume of the composite heat source.
2 more elements
Dependencies are inferred from the claim text.