AEROSOL GERNATING SUBSTRATE ELEMENT WITH THICK PAPER

Abstract

An aerosol generating substrate element includes an aerosol generating substrate comprising a glycerine content of between about 10% and about 30% and at least one paper layer circumscribing the aerosol generating substrate. The paper layer has a thickness in a range from about 78 micrometers to about 160 micrometers. At least about 80% of the aerosol generating substrate circumference is circumscribed by less than two paper layers.

Claims

1-17. (canceled)

18. An aerosol generating substrate element comprising: an aerosol generating substrate comprising homogenized tobacco material and a glycerine content of between about 10% and about 30%; and a paper layer circumscribing the aerosol generating substrate, the paper layer having a thickness in a range from about 78 micrometers to about 160 micrometers, wherein at least 80% of the aerosol generating substrate circumference is circumscribed by less than two paper layers, wherein the least one paper layer has a ratio of paper thickness to tobacco substrate diameter in a range from about 1:120 to about 1:40.

19. The aerosol generating substrate element according to claim 18, wherein the paper layer has a paper thickness in a range from about 78 micrometers to about 140 micrometers.

20. The aerosol generating substrate element according to claim 18, wherein the paper layer does not extend beyond ends of the aerosol generating substrate.

21. The aerosol generating substrate element according to claim 18, wherein at least 95% of the aerosol generating substrate circumference is circumscribed by less than two paper layers.

22. The aerosol generating substrate element according to claim 18, wherein at least 90% of the aerosol generating substrate circumference is circumscribed by less than two paper layers that do not extend beyond a length of the aerosol generating substrate.

23. The aerosol generating substrate element according to claim 18, wherein at least 90% of the aerosol generating substrate circumference is circumscribed by less than two paper layers which circumscribe the aerosol generating substrate along substantially a length of the aerosol generating substrate.

24. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate defines a substantially cylindrical shape.

25. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate defines a substantially cylindrical shape having a diameter in a range from about 6.8 mm to about 7.1 mm.

26. The aerosol generating substrate element according to claim 25, wherein the homogenized tobacco material comprises tobacco material, from about 1 percent to about 5 percent of a binder, and from about 10 percent to about 30 percent of glycerine, in dry weight basis.

27. The aerosol generating substrate element according to claim 25, wherein the aerosol generating substrate comprises a gathered sheet of homogenized tobacco material that is crimped.

28. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate comprises a metallic induction heating element.

29. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate comprises a plurality of metallic induction heating elements.

30. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate element is configured to heat the aerosol generating substrate directly without transmitting heat to the aerosol generating substrate through the at least one paper layer.

31. The aerosol generating substrate element according to claim 18, wherein the paper layer forms a laminate with an aluminum layer.

32. The aerosol generating substrate element according to claim 18, wherein the aerosol generating substrate element is configured to receive a resistive heating blade inserted into the aerosol generating substrate.

33. The aerosol generating substrate element according to claim 18, wherein the least one paper layer has a ratio of paper thickness to tobacco substrate diameter in a range from about 1:100 to about 1:50, and the paper layer has a paper thickness in a range from about 90 micrometers to about 140 micrometers.

34. The aerosol generating substrate element according to claim 18, wherein the paper layer has a paper thickness in a range from about 100 micrometers to about 140 micrometers, and the least one paper layer has a ratio of paper thickness to tobacco substrate diameter in a range from about 1:70 to about 1:50.

35. The aerosol generating substrate element according to claim 33, wherein the aerosol generating substrate comprises a plurality of metallic induction heating elements.

36. The aerosol generating substrate element according to claim 33, wherein the paper layer forms a laminate with an aluminum layer.

37. The aerosol generating substrate element according to claim 34, wherein the aerosol generating substrate comprises a plurality of metallic induction heating elements and the paper layer forms a laminate with an aluminum layer.

Description

[0077] FIG. 1 is a schematic cross-sectional diagram of an aerosol generating article.

[0078] FIG. 2 is a schematic cross-sectional diagram of the aerosol generating substrate element along line 2-2 in FIG. 1.

[0079] FIG. 3 is a schematic cross-sectional diagram of the aerosol generating substrate element along line 3-3 in FIG. 2.

[0080] FIG. 4 is a schematic cross-sectional diagram of an aerosol generating system.

[0081] FIG. 5 is a schematic cross-sectional diagram a heating blade inserted into the aerosol generating substrate element.

[0082] The aerosol generating articles depicted in FIGS. 1-5 illustrate one or more examples of aerosol generating articles, components of aerosol generating articles, or aerosol generating systems described above. The schematic drawings are not necessarily to scale and are presented for purposes of illustration and not limitation. The drawings depict one or more aspects described in this disclosure. However, it will be understood that other aspects not depicted in the drawings fall within the scope and spirit of this disclosure.

[0083] The aerosol generating article 10, of FIG. 1, illustrates an aerosol generating substrate element 12 including an aerosol generating substrate 20 wrapped with a single turn of a thick paper layer 30. An intermediate section 24 separates a filter element 22 from the aerosol generating substrate element 12. The aerosol generating substrate element 12, intermediate section 24, and a filter element 22 are aligned from a distal end 13 to a proximal end 11 in serial order and form a cylinder. A tipping paper or tipping wrapper 40 circumscribes the aerosol generating article 10 to join the aerosol generating substrate element 12 to the intermediate section 24, and a filter element 22.

[0084] The intermediate section 24 may comprise on or more of, a hollow cellulose acetate tube or a polylactic acid filter segment. The filter element 22 may define a mouthpiece segment and be formed of cellulose acetate material. The aerosol generating substrate element 12, the intermediate section 24, and a filter element 22 may be individually wrapped with a paper layer and then joined to each other with the tipping paper or tipping wrapper 40. In particular, the aerosol-generating substrate element 12 is wrapped with a paper layer 30, as described herein.

[0085] The aerosol generating article 10 has a mouth end or proximal end 11 and an upstream, distal end 13 located at the opposite end of the article to the mouth end 11. The aerosol generating article 10 shown in FIG. 1 is particularly suitable for use with an electrically operated aerosol generating device comprising a heater for heating the aerosol generating substrate element 12.

[0086] FIG. 2 is a schematic cross-sectional diagram of the aerosol generating substrate element 12 along line 2-2 in FIG. 1. FIG. 3 is a schematic cross-sectional diagram of the aerosol generating substrate element 12 along line 3-3 in FIG. 2.

[0087] The paper layer 30 circumscribes the aerosol generating substrate 20 to define the aerosol generating substrate element 12 with a substantially cylindrical shape. The aerosol generating substrate 20 defines a substantially cylindrical shape having a diameter 23 in a range from about 6.8 mm to about 7.1 mm. The aerosol generating substrate element 12 defines a substantially cylindrical shape having a diameter 33 in a range from about 7.1 mm to about 7.3 mm.

[0088] The paper layer 30 has a thickness T in a range from about 78 micrometers to about 160 micrometers. The paper layer 30 may preferably have a thickness in a range from about 78 micrometers to about 140 micrometers, or from about 90 micrometers to about 140 micrometers, or from about 100 micrometers to about 140 micrometers, or from about 110 micrometers to about 140 micrometers, or from about 125 micrometers to about 140 micrometers, or from about 130 micrometers to about 140 micrometers.

[0089] The paper layer 30 has a ratio of paper thickness T to tobacco substrate diameter 23 in a range from about 1:120 to about 1:40, or about 1:100 to about 1:50. The paper layer 30 may have a ratio of paper thickness to tobacco substrate element diameter 33 in a range from about 1:100 to about 1:40, or about 1:75 to about 1:50, or about 1:65 to about 1:50, or about 1:60 to about 1:50. The paper layer 30 does not extend beyond either end 25. 26 of the aerosol generating substrate 20.

[0090] The paper layer 30 circumscribes the entire circumference of the aerosol generating substrate 20 with very little overlap 100 of the paper layer 30 onto itself. The overlap 100 region forms more than one paper layer. In FIG. 2, the overlap 100 forms two layers of paper.

[0091] The overlap 100 may be about 20% or less of the circumference of the aerosol generating substrate 20. The overlap 100 may be about 10% or less of the circumference of the aerosol generating substrate 20. The overlap 100 may be about 5% or less of the circumference of the aerosol generating substrate 20. The paper layer 30 may not extend beyond the ends 25, 26 of the aerosol generating substrate 20. The paper layer 30 circumscribes an entire length of the aerosol generating substrate 20 between the ends 25, 26 of the aerosol generating substrate 20.

[0092] FIG. 2 illustrates that the paper layer 30 forming a substantially single turn or single layer around the circumference of the aerosol generating substrate 20. At least about 80%, or at least about 90%, or at least about 95% of the aerosol generating substrate 20 circumference is circumscribed by less than two paper layers 30. At least about 80%, or at least about 90%, or at least about 95% of the aerosol generating substrate 20 circumference is circumscribed by less than two paper layers 30 that do not extend beyond a length or the ends 25, 26 of the aerosol generating substrate 20. At least about 80%, or at least about 90%, or at least about 95% of the aerosol generating substrate 20 circumference is circumscribed by less than two paper layers 30 which circumscribe the aerosol generating substrate 20 along substantially a length of the aerosol generating substrate 20.

[0093] FIG. 4 is a schematic cross-sectional diagram of an aerosol generating system 201. FIG. 5 is a schematic cross-sectional diagram a heating blade 230 inserted into the aerosol generating substrate element 12. The aerosol generating article 10 may be used with the aerosol generating device 200 as illustrated in FIG. 4 and FIG. 5.

[0094] The aerosol generating device 200 includes a housing 210 defining the receptacle 220, which is configured to receive the aerosol generating article 10. The aerosol generating device 200 also includes a heating blade element 230 configured to pierce the aerosol generating substrate element 12 of the aerosol generating article 10. The heating blade element 230 may comprise an electrically resistive heating component. In addition, the device 200 includes a power supply 240 and control electronics 250 that cooperate to control heating of heating blade element 230.

[0095] The aerosol generating article 10 illustrates an aerosol-generating substrate element 12, an intermediate section 24, and a filter element 22 aligned from a distal end 13 to a proximal end 11 in serial order and form a cylinder. The distal end 13 of the aerosol generating article 10. The aerosol generating substrate 12 has a length of about 12 millimetres. The aerosol generating substrate 12 is cylindrical in shape and has a substantially circular cross-section. The aerosol generating substrate 12 may comprise a gathered sheet of homogenised tobacco material. The sheet of homogenised tobacco material may comprise about 10 percent by weight on a dry basis of glycerine. The intermediate section 24 may be a hollow cellulose acetate tube having a length of about 8 millimetres and a thickness of 1 millimetre. The mouthpiece segment or filter element 22 may comprises a plug of cellulose acetate tow of 8 denier per filament and has a length of about 7 millimetres.

[0096] FIG. 5 illustrates the heating blade element 230 disposed within the aerosol generating substrate 12. The heating blade element 230 may heat the aerosol generating substrate 12 of the aerosol generating article 10. Heating of the aerosol generating substrate 12 causes the aerosol generating substrate 12 to generate an aerosol containing the nicotine which can transfer out of the aerosol generating article 10 at the proximal end 11.

[0097] The heating blade element 230 may have a width 233 of about 5 mm. The aerosol generating substrate 20 defines a substantially cylindrical shape having a diameter 23 in a range from about 6.8 mm to about 7.1 mm. The aerosol generating substrate element 12 defines a substantially cylindrical shape having a diameter 33 in a range from about 7.1 mm to about 7.3 mm. The heating blade element 230 may lie within about 1 mm from the paper layer 30.

[0098] In some examples the heating mechanism may be by induction where the heating element emits radio-magnetic radiation which is absorbed by one or more metallic induction heating elements when the aerosol generating article 10 is positioned in the receptacle 220 of the aerosol generating device 200.

[0099] Once the aerosol generating article 10 is releasably received in the aerosol generating device 200 and on the heating blade element 230, the aerosol generating device 200 is actuated to heat the aerosol generating substrate 12 to a temperature of approximately 375 degrees Celsius. As a user draws on the mouth end 11 of the aerosol generating article 10, the volatile compounds evolved from the aerosol generating substrate 12 are drawn downstream through the aerosol generating article 10 and condense to form an aerosol that is drawn through the mouthpiece 11 of the aerosol generating article 10 into the user's mouth.

[0100] The exemplary examples described above are not limiting. Other examples consistent with the exemplary examples described above will be apparent to those skilled in the art.