Search

KR-102961438-B1 - Aerosol generating article containing a mouse terminal cooling element

KR102961438B1KR 102961438 B1KR102961438 B1KR 102961438B1KR-102961438-B1

Abstract

An aerosol generating article (10; 50) for generating an aerosol upon heating is provided, and the aerosol generating article comprises a rod (12) of an aerosol generating material; a hollow tubular support element (14) located immediately downstream of the rod of the aerosol generating material; and an aerosol cooling element (16) located downstream of the hollow tubular support element. The aerosol cooling element (16) extends completely to the downstream end of the aerosol generating article and comprises a hollow tubular portion having a transverse wall (26) located between the upstream end and the downstream end of the hollow tubular portion. Thus, the hollow tubular portion defines a first cavity (28) upstream of the transverse wall and a second cavity (30) downstream of the transverse wall (26). The horizontal wall surface includes one or more openings (32; 34, 36) that establish fluid communication between the first cavity (28) and the second cavity (30).

Inventors

  • 바티스타, 루이 누노
  • 귀도티, 엔리코

Assignees

  • 필립모리스 프로덕츠 에스.에이.

Dates

Publication Date
20260508
Application Date
20200527
Priority Date
20190605

Claims (15)

  1. As an aerosol generating article for generating an aerosol upon heating, the aerosol generating article is: A rod of an aerosol generating substrate comprising an aerosol forming agent, wherein the aerosol generating substrate has an aerosol forming agent content of more than 10% based on dry weight; A hollow tubular support element located immediately downstream of the rod of the aerosol generating device; The aerosol cooling element located downstream of the above-mentioned hollow tubular support element, comprising the aerosol cooling element that extends completely to the downstream end of the aerosol generating article, The aerosol cooling element comprises a hollow tubular portion having a transverse wall at a position between an upstream end and a downstream end of the hollow tubular portion, wherein the hollow tubular portion forms a first cavity upstream of the transverse wall and a second cavity downstream of the transverse wall; and the transverse wall includes one or more openings that establish fluid communication between the first cavity and the second cavity; The above-mentioned hollow tubular portion having the above-mentioned transverse wall is an aerosol generating article arranged immediately downstream of the above-mentioned hollow tubular support element.
  2. An aerosol generating article according to claim 1, wherein the transverse wall surface has a single substantially central opening having an equivalent diameter of 0.3 mm to 0.6 mm provided inside.
  3. An aerosol generating article according to claim 1 or 2, wherein the transverse wall surface has a plurality of substantially identical circumferentially spaced openings, each opening having an equivalent diameter of 0.1 mm to 0.5 mm.
  4. An aerosol generating article according to claim 1, wherein the transverse wall surface has a plurality of substantially radial slits extending from the center of the transverse wall surface over a length less than the radius of the transverse wall surface.
  5. An aerosol generating article according to claim 1 or 2, wherein the length of the aerosol cooling element is at least 5 mm.
  6. An aerosol generating article according to claim 1 or 2, wherein the length of the aerosol cooling element is less than 20 mm.
  7. An aerosol generating article according to claim 1 or 2, wherein the length of the first cavity is smaller than the length of the second cavity.
  8. An aerosol generating article according to claim 1 or 2, wherein the ratio between the length of the first cavity and the length of the second cavity is 0.15 to 0.8.
  9. An aerosol generating article according to claim 1 or 2, wherein the length of the first cavity is at least 3 mm.
  10. An aerosol generating article according to claim 1 or 2, wherein the length of the first cavity is less than 13 mm.
  11. An aerosol generating article according to claim 1 or 2, wherein the length of the second cavity is at least 5 mm.
  12. An aerosol generating article according to claim 1 or 2, wherein the length of the second cavity is less than 17 mm.
  13. An aerosol generating article according to claim 1 or 2, wherein the thickness of the peripheral wall surface of the hollow tubular portion is at least 2 mm.
  14. An aerosol generating article according to claim 1 or 2, wherein the outer diameter of the hollow tubular portion is at least 3 mm.
  15. delete

Description

Aerosol generating article containing a mouse terminal cooling element The present invention relates to an aerosol generating article comprising an aerosol generating substrate and configured to generate an inhalable aerosol upon heating. Aerosol generating articles are known in the art in which an aerosol generating material, such as a tobacco-containing material, is heated without combustion. Typically, in such heated smoking articles, an aerosol is generated by heat transfer to an aerosol generating material or material that is physically separated from a heat source, and such material or material may be located in contact with the heat source, inside the heat source, around the heat source, or downstream of the heat source. During use of the aerosol generating article, volatile compounds are released from the aerosol generating material by heat transfer from the heat source and are entrained in the air inhaled through the aerosol generating article. As the released compounds cool, they condense to form an aerosol. A number of prior art documents disclose an aerosol generating device for consuming an aerosol generating article. Such a device includes, for example, an electric heating aerosol generating device in which an aerosol is generated by heat transfer from one or more electric heater elements of the aerosol generating device to an aerosol generating substrate of a heated aerosol generating article. In the past, substrates for heated aerosol generating articles were typically produced using randomly oriented shreds, strands, or strips of tobacco material. More recently, alternative substrates for aerosol generating articles to be heated rather than burned, such as rods formed from corrugated sheets of tobacco material, have been disclosed. For example, the rod disclosed in international patent application WO-A-2012/164009 has longitudinal porosity that allows air to be drawn through the rod. As a further alternative, international patent application WO-A-2011/101164 discloses a rod for a heated aerosol generating article formed from strands of homogenized tobacco material, which can be formed by casting, rolling, calendering, or extruding a mixture comprising a mixture of particulate tobacco and at least one aerosol-forming agent to form a sheet of homogenized tobacco material. In another embodiment, the rod of WO-A-2011/101164 may be formed from a strand of homogenized tobacco material obtained by extruding a mixture comprising particulate tobacco and at least one aerosol-forming agent to form a continuous length of homogenized tobacco material. A substrate for a heated aerosol generating article typically further comprises an aerosol forming agent, that is, a compound or a mixture of compounds, which facilitates the formation of an aerosol upon use and, preferably, is substantially resistant to thermal sensitivity at the operating temperature of the aerosol generating article. Examples of suitable aerosol forming agents include, but are not limited to, polyhydric alcohols such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerin; esters of polyhydric alcohols such as glycerol mono-, di-, or triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids such as dimethyl dodecanedioate and dimethyl tetradecanedioate. Additionally, it is common to include an aerosol generating article for producing an inhalable aerosol when one or more additional elements assembled with the substrate within the same wrapper are heated. Examples of such additional elements include a mouthpiece filter area and a support element suitable for providing structural strength to the aerosol generating article. Additionally, it has been proposed to include in an aerosol generating article for generating an inhalable aerosol when heating a cooling element configured to facilitate the cooling of the aerosol before it reaches the mouthpiece. As an example, WO 2013/120565 discloses an aerosol generating article, an aerosol forming substrate, and an aerosol cooling element located downstream of the aerosol forming substrate within a rod. In one embodiment, the aerosol cooling element comprises a crimped sheet of polylactic acid (PLA) that is corrugated to define a plurality of longitudinally extending channels. As a stream of aerosol is drawn through the aerosol cooling element, heat can be transferred from the aerosol to the sheet of PLA. When the aforementioned type of aerosol-generating product is used under particularly hot and humid weather conditions, such as those frequently encountered in countries characterized by tropical climates, the temperature reached by the mouthpiece of the product can be as high as 42°C to 45°C. Generally, because sensitive tissues such as the lips, mouth, tongue, and mucous membranes may come into direct contact with the surface of the mouthpiece during use, these temperatures may be associated with discomfort or minor pain for some consumers. Without being bound by the