Heated aerosol-generating articles comprising improved rods

• US 10,660,364 B2
• Filed: 10/13/2014
• Issued: 05/26/2020
• Est. Priority Date: 10/14/2013
• Status: Active Grant

• Current Assignee: Philip Morris Products SA (Philip Morris Limited)
• Original Assignee: Philip Morris Products SA (Philip Morris Limited)
• Inventors: Ajithkumar, Anu, Chetschik, Irene, Schaller, Jean-Pierre
• Primary Examiner(s): Yaary, Eric
• Assistant Examiner(s): Sparks, Russell E
• Application Number:
  US14/917,215
• Publication Number:
  US 20160213063A1
• Time in Patent Office: 2,052 Days
• Field of Search: 131329
• CPC Class Codes: A24B 15/14 made of tobacco and a binding agent not derived from tobacco
• CPC Class Codes: A24B 15/165 comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
• CPC Class Codes: A24B 15/32 by acyclic compounds
• CPC Class Codes: A24B 3/14 Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products delustering A24C1/40
• CPC Class Codes: A24B 3/18 Other treatment of leaves, e.g. puffing, crimpling, cleaning
• CPC Class Codes: A24D 1/02 with special covers
• CPC Class Codes: A24D 1/22 Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources
• CPC Class Codes: A24F 40/20 Devices using solid inhalable precursors
• CPC Class Codes: A24F 42/10 Devices with chemical heating means

Abstract

A heated aerosol-generating article is provided, including an aerosol-generating substrate including a rod, the rod including a gathered sheet of homogenised tobacco material circumscribed by a wrapper. The gathered sheet of homogenised tobacco material includes one or more plasticisers and at least about 5 percent by weight triethyl citrate on a dry weight basis. The one or more plasticisers may be selected from the group consisting of propylene glycol, sugars, and polyhydric alcohols. The sheet of homogenised tobacco material may be crimped or otherwise textured.

Claims

1. A heated aerosol-generating article, comprising:

an aerosol-generating substrate,

wherein the aerosol-generating substrate comprises a rod comprising a gathered sheet of homogenised tobacco material circumscribed by a wrapper,

wherein the gathered sheet of homogenised tobacco material extends along substantially an entire length of the rod and across substantially an entire cross-sectional area of the rod, and

wherein the gathered sheet of homogenised tobacco material comprises at least about 5 percent by weight of a plasticiser on a dry weight basis and at least about 5 percent by weight triethyl citrate on a dry weight basis,

wherein the plasticiser is glycerine, and

wherein the sheet includes less than or equal to 25% by weight of the plasticiser and less than or equal to 25% by weight of the triethyl citrate.

2. The heated aerosol-generating article according to claim 1, wherein total amount of plasticiser and triethyl citrate in the gathered sheet of homogenised tobacco material is less than or equal to about 30 percent by weight on a dry weight basis.

3. The heated aerosol-generating article according to claim 1, wherein a ratio of percent by weight on a dry weight basis of plasticiser to triethyl citrate in the gathered sheet of homogenised tobacco material is between about 1:

1 and about 2;

1.

4. The heated aerosol-generating article according to claim 1, wherein the gathered sheet of homogenised tobacco material has a fracture force per unit width in a cross direction of at least about 160 N/m.

5. The heated aerosol-generating article according to claim 1, wherein the gathered sheet of homogenised tobacco material is crimped.

6. The heated aerosol-generating article according to claim 1, further comprising a combustible heat source.

7. A rod, comprising a gathered sheet of homogenised tobacco material circumscribed by a wrapper, wherein the gathered sheet of homogenised tobacco material extends along substantially an entire length of the rod and across substantially an entire cross-sectional area of the rod, and wherein the gathered sheet of homogenised tobacco material comprises a plasticiser that is glycerine and at least about 5 percent by weight triethyl citrate on a dry weight basis, configured as an aerosol-generating substrate in a heated aerosol-generating article.