Smoking article with flow restrictor adapted to promote filter degradation
AssigneePhilip Morris Products S.A.
InventorsStefanos Papakyrillou, Leonardo Nappi
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Abstract
A smoking article comprises a tobacco rod and a filter component. The filter component comprises a first filter segment of filtration material having a diameter measured perpendicular to a longitudinal direction of the filter, and a flow restrictor embedded in the filter segment. At least one cross sectional dimension of the flow restrictor, measured in a transverse direction of the filter segment, is at least about 50 percent of the diameter of the filter segment. The flow restrictor is made from an air-impermeable, non-compressible and water-soluble or water-dissolvable material. Further, the flow restrictor comprises a composition that promotes degradation of the filtration material.
Claims13
A smoking article comprising a tobacco rod and a filter component, the filter component comprising:
- a filter segment of filtration material having a diameter measured perpendicular to a longitudinal direction of the filter;
- and
- a flow restrictor embedded in the filter segment;
- wherein at least one cross sectional dimension of the flow restrictor, measured in a transverse direction of the filter segment, is at least about 50 percent of the diameter of the filter segment;
- wherein the flow restrictor is made from an air-impermeable, non-compressible and water-soluble or water-dissolvable material;
- and
- wherein the flow restrictor comprises a composition that promotes degradation of the filtration material;
- wherein the flow restrictor comprises a bead, the composition that promotes degradation of the filtration material at least partly coating the bead.
Dependencies are inferred from the claim text.