Electronic smoking article with improved storage of aerosol precursor compositions

Patent metadata

Field	Value
Publication number	US-9974334-B2
Application number	US-201414158264-A
Country	US
Kind code	B2
Filing date	Jan 17, 2014
Priority date	Jan 17, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

The present disclosure relates to electronic smoking articles exhibiting improved moisture control of a reservoir contained therein. The reservoir can be formed of fibrous materials, such as cellulose acetate fiber, thermoplastic fiber, non-thermoplastic fiber, or a combination thereof. The disclosure further provides methods for forming electronic smoking articles and methods of packaging electronic smoking articles (including cartridges thereof) so as to improve moisture control of the reservoir.

First claim

The invention claimed is:

1. An electronic smoking article comprising:
a housing;
a reservoir within the housing, the reservoir being formed of a woven or nonwoven fabric having a basis weight of about 120 gsm or greater; and
an aerosol precursor fluid held by the reservoir, the aerosol precursor fluid including water in an amount that is greater than about 0.1% and less than about 15% by weight;
wherein the reservoir has a saturation capacity of about 800% to about 2,000% by weight relative to the aerosol precursor fluid.

2. The electronic smoking article of claim 1 , wherein the reservoir is substantially shaped as a cylinder having a hollow interior portion.

3. The electronic smoking article of claim 1 , wherein the woven or nonwoven fabric comprises cellulose acetate.

4. The electronic smoking article of claim 1 , wherein the weight of aerosol precursor fluid held by the reservoir relative to the saturation capacity of the reservoir is no greater than about 80%.

5. The electronic smoking article of claim 4 , wherein the weight of aerosol precursor fluid held by the reservoir relative to the saturation capacity of the reservoir is no greater than about 60%.

6. The electronic smoking article of claim 1 , further comprising an atomizer.

7. The electronic smoking article of claim 6 , wherein the atomizer comprises:
a continuous, elongated wick having two opposing ends;
a heater in connection with the wick and positioned at about a midpoint thereof; and
electrically conducting terminals in electrical connection with the heater.

8. The electronic smoking article of claim 1 , wherein the woven or nonwoven fabric has a wall thickness of about 1 mm to about 4 mm.

9. The electronic smoking article of claim 1 , further comprising a second housing that includes a power source, the second housing being removably attached to the housing comprising the reservoir.

Assignees

• Reynolds Tobacco Co R
• Rai Strategic Holdings Inc

Inventors

• Dooly Grady Lance
• Sears Stephen Benson
• Williams Karen V
• Dull Gary M
• Worm Steven L
• Jones Wesley Steven
• Alderman Steven Lee
• Brinkley Paul A
• Flinchum Jr Jack Gray

Classifications

• A24F40/40

  Constructional details, e.g. connection of cartridges and battery parts · CPC title

• B65B5/06

  Packaging groups of articles, the groups being treated as single articles · CPC title

• B65D81/266

  for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence) · CPC title

• A61M15/0016

  located downstream of the dispenser, i.e. traversed by the product · CPC title

• A61M15/0015

  located upstream of the dispenser, i.e. not traversed by the product · CPC title