Humidity control insert for cigarette packs
AssigneeR.J. Reynolds Tobacco Products
InventorsAndries Don Sebastian, Lisa Brown, Frank Kelley St. Charles, Ercilia B. Hernandez Garcia, Pankaj C. Patel, Craig T. Demarest, Daniel V. Cantrell
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Abstract
Provided herein is a humidity control insert for packages such as cigarette packs. The humidity control insert comprises a porous nonwoven fibrous substrate and a hygroscopic powder material dispersed within the porous nonwoven fibrous substrate. Further provided is a package, such as a cigarette pack, comprising the humidity control insert, wherein the humidity control insert is adapted to release moisture retained therein into an internal air space of the cigarette pack.
Claims15
A method for making a humidity control insert for a package, the humidity control insert comprising a porous nonwoven fibrous substrate and a hygroscopic powder material dispersed within the porous nonwoven fibrous substrate, the method comprising:
- dispersing the hygroscopic powder material into the porous nonwoven fibrous substrate by a dry powder impregnation process;
- wherein the hygroscopic powder material is dispersed into the porous nonwoven fibrous substrate using an alternating electric field.
A method for making a humidity control insert for a package, the humidity control insert comprising a porous nonwoven fibrous substrate and a hygroscopic powder material dispersed within the porous nonwoven fibrous substrate, the method comprising:
- dispersing the hygroscopic powder material into the porous nonwoven fibrous substrate by a dry powder impregnation process;
- and
- heating and compacting the porous nonwoven fibrous substrate so as to immobilize the hygroscopic powder material.
Dependencies are inferred from the claim text.