Aerosol delivery device including substrate with improved absorbency properties
AssigneeRAI Strategic Holdings, Inc.
InventorsAndries Don Sebastian, Michael F. Davis, Percy D. Phillips
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Abstract
The present disclosure relates to aerosol delivery devices, methods of forming such devices, and elements of such devices. In some embodiments, the present disclosure provides substrates for use in storing an aerosol precursor liquid and/or transporting the liquid to a heater for vaporization. The substrates can be formed form fibers that can provide improved absorbency and/or transport qualities. Multi-layer substrates are also disclosed and can include a high absorbency layer and a hydrophobic layer.
Claims15
An aerosol delivery device comprising:
- a housing;
- a substrate at least partially formed from regenerated cellulose fibers;
- an aerosol forming liquid retained by the substrate;
- and
- a heater operatively arranged for vaporization of the aerosol forming liquid;
- wherein the substrate comprises a plurality of layers including a first layer and a second layer;
- wherein the plurality of layers is configured to promote movement of liquid in a first direction and to restrict movement of liquid in a second direction;
- wherein the first layer is configured for storage and release of the aerosol precursor composition and comprises one or more of regenerated cellulose fibers having a hollow, substantially cylindrical cross-section and regenerated cellulose fibers having a multi-lobal cross-section;
- and
- wherein the second layer is hydrophobic and comprises regenerated cellulose fibers that include a hydrophobic additive.
A method of preparing an aerosol delivery device, the method comprising:
- providing a housing;
- placing within the housing a substrate, wherein the substrate comprises a plurality of layers including a first layer and a second layer, wherein the plurality of layers is configured to promote movement of liquid in a first direction and to restrict movement of liquid in a second direction;
- wherein the first layer is configured for storage and release of the aerosol precursor composition and comprises one or more of regenerated cellulose fibers having a hollow, substantially cylindrical cross-section and regenerated cellulose fibers having a multi-lobal cross-section;
- and wherein the second layer is hydrophobic and comprises regenerated cellulose fibers that include a hydrophobic additive;
- and
- configuring the substrate to be in fluid communication with a heater within the housing;
- wherein, before or after placing the substrate within the housing, an aerosol forming liquid is retained by the substrate.
Dependencies are inferred from the claim text.