Immobilized additive inserts
AssigneePhilip Morris USA Inc.
InventorsMunmaya K. Mishra, Jay A. Fournier, Marc R. Krauss, Douglas A. Fernandez, Peter J. Lipowicz
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Abstract
Delivery of additives in a smoking article is provided through thermally degradable, robust immobilized additive inserts. Additives can be immobilized in an elongated device or an insert, wherein the elongated device or the insert is sufficiently robust to allow the elongated device or the insert to be manually or machine inserted into a smoking article while maintaining the structure of the elongated device or the insert. By providing additives in the form of thermally degradable immobilized additive inserts, migration and/or loss of the additives in a smoking article prior to smoking can be reduced.
Claims15
A smoking article comprising:
- a tobacco rod;
- a robust immobilized additive insert including a thermally degradable elongated device, the thermally degradable elongated device having at least one tapered or sharpened end configured to allow the robust immobilized additive insert to be pushed into the tobacco rod, the smoking article formed by
- (a) pressurizing an elongated device including an elongated hollow region in an additive-containing pressurized vessel to a pressure of at least 20 psi, layering additive containing tobacco sheets and forming the insert from the layered additive containing tobacco sheets, or infusing additives by vacuum infiltration;
- and
- (b) inserting the insert into the tobacco rod, the insert being sufficiently robust to maintain its original shape during insertion into the tobacco rod.
Dependencies are inferred from the claim text.