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US 10,588,346 B2Granted
Hydrophobic wrapper
AssigneePhilip Morris Products S.A.
InventorsClement Besso, Aurelien Guyard, Mirko Minzoni, Alen Kadiric
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Abstract
A smoking article (10) includes a tobacco substrate (20) comprising at least 15% humectant and a hydrophobic paper wrapper (40) disposed about the tobacco substrate. The paper wrapper (40) is hydrophobic due to hydrophobic groups covalently bonded to the paper.
Claims15
A smoking article comprising:
- a tobacco substrate comprising at least 15% by weight humectant;
- and
- a paper wrapper disposed about the tobacco substrate and comprising an inner surface in contact with the tobacco substrate and an outer surface,
- wherein the paper wrapper comprises at least one hydrophobic surface due to hydrophobic groups comprising fatty acid esters covalently bonded to cellulosic material of the paper,
- wherein the hydrophobic surface is formed by at least 100 discrete hydrophobic islands disposed throughout at least a downstream-most 75% portion of the paper wrapper, and
- wherein the at least one hydrophobic surface comprises the inner surface, the outer surface, or both;
- the plurality of discrete hydrophobic islands are not present in the most upstream 25% portion of the paper wrapper.
4 more elements
Dependencies are inferred from the claim text.