CN-122004510-A - Aerosol-generating article and method for enhancing nicotine release

CN122004510ACN 122004510 ACN122004510 ACN 122004510ACN-122004510-A

Abstract

The application belongs to the technical field of heating cigarettes, and particularly relates to an aerosol generating product and a method for improving nicotine release amount. The aerosol-generating article comprises an aerosol-generating substrate segment having an upstream end face and a downstream end face, the aerosol-generating substrate segment having a tortuous aperture extending therethrough from the upstream end face to the downstream end face, the aerosol-generating substrate segment being cylindrical in shape, the ratio of the distance between the upstream and downstream end faces of the aerosol-generating substrate segment to the diameter being less than 1.2. The application reduces the ratio of the distance between the upstream end face and the downstream end face of the aerosol generating substrate and the hydraulic diameter of the circumferential direction of the cigarette, improves the mouth-by-mouth release amount and the total release amount of nicotine, remarkably improves the use efficiency of the aerosol generating substrate, remarkably improves the heating speed of the aerosol generating substrate, enables the aerosol generating substrate to be more similar to the traditional combustion type cigarette smoke generating mode, and improves the aerosol concentration and the mouth-by-mouth smoking stability.

Inventors

LI BIN
ZHANG ZHAN
FU LILI
LI HAIJIE
NIU YAPENG
ZHANG YUE
QI WEI
ZHANG QI

Assignees

中国烟草总公司郑州烟草研究院
河南中烟工业有限责任公司

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (10)

1. An aerosol-generating article comprising an aerosol-generating substrate segment having an upstream end face and a downstream end face; The aerosol-generating substrate segment having a tortuous aperture extending therethrough from the upstream end face to the downstream end face; the aerosol-generating substrate section is cylindrical, the ratio of the distance between the upstream end face and the downstream end face of the aerosol-generating substrate section to the diameter is smaller than 1.2, or the aerosol-generating substrate section is cuboid, and the ratio of the distance between the upstream end face and the downstream end face of the aerosol-generating substrate section to the hydraulic diameter of the end face is smaller than 1.2.
2. An aerosol-generating article according to claim 1, wherein the visible light transmittance between the upstream end face and the downstream end face in the aerosol-generating substrate segment is from 5% to 40%.
3. An aerosol-generating article according to claim 1, further comprising a heat shielding section downstream of the aerosol-generating substrate section; the heat shielding section is configured such that a projection of light rays transmitted from the downstream end face in a downstream axial direction falls on the heat shielding section.
4. An aerosol-generating article according to claim 3, wherein the heat shielding section is one or both of a fibrous tow section or a light barrier; The heat shielding section is provided with an axial through hole or a non-axial through hole; When the heat shielding section has an axial through hole, the heat shielding section is configured such that a projection of light transmitted from the downstream end face in a downstream axial direction falls at a non-axial through hole position of the heat shielding section.
5. An aerosol-generating article according to claim 1, further comprising a smoke mixing section; the flue gas mixing section is located between the aerosol-generating substrate section and the heat shielding section, or the flue gas mixing section is located downstream of the heat shielding section.
6. An aerosol-generating article according to claim 5, wherein the smoke mixing section has a hollow structure therein.
7. An aerosol-generating article according to claim 1, comprising a light-reflecting layer wrapped around the periphery of the aerosol-generating substrate segments.
8. An aerosol-generating article according to claim 2, wherein the visible light transmittance between the upstream end face and the downstream end face in the aerosol-generating substrate segment is from 5% to 15%.
9. An aerosol-generating article according to claim 1, wherein the aerosol-generating substrate segment is cylindrical and the ratio of the distance between the upstream and downstream end faces to the diameter of the aerosol-generating substrate segment is 0.6-1, or The aerosol generating substrate section is cuboid, and the ratio of the distance between the upstream end face and the downstream end face of the aerosol generating substrate section to the hydraulic diameter of the end face is 0.6-0.9.
10. A method of increasing the amount and rate of nicotine released, characterized in that the aerosol-generating article of claim 1 is used.

Description

Aerosol-generating article and method for enhancing nicotine release Technical Field The invention belongs to the technical field of heating cigarettes, and particularly relates to an aerosol generating product and a method for improving nicotine release amount. Background Traditional cigarettes and electronic cigarettes, heated cigarettes, buccal cigarettes, nicotine pouches, and other tobacco products all have nicotine delivery as a primary consumer feature. And novel tobacco products such as electronic cigarettes, heating cigarettes, nicotine bags and the like have little harm to consumers, and can effectively transfer nicotine, so that the tobacco products are more and more favored by consumers. The new tobacco products have recently shown a rapid growth trend in the international tobacco consumer market, and are also important points of attention of various large tobacco manufacturers. The heated cigarettes are expected to become the main tobacco consumer products due to their rapid development in the international market as they have similar smoke characteristics to traditional combustion type cigarettes. Innovations for heating cigarettes are mainly in the fields of heating cigarette structures, heating modes, tight combination with cigarettes, promotion of aerosol generation in tobacco products, efficient delivery to consumers and the like. In terms of cigarette structure, the mature heating cigarette is still generally mainly a cylinder with the length of 40 mm-80 mm and the circumference of 17 mm-24 mm as main characteristics, and generally comprises an aerosol generating substrate section, a cooling section, a filter tip section and the like in the axial direction. The heat supply direction mainly comprises circumferential and central heating, bottom heating or hot air flow heating. Circumferential heating refers to the placement of heaters around the aerosol-generating substrate segments. The central heating is typically arranged at a location inside the aerosol-generating substrate or in use a heating body is inserted to heat the aerosol-generating substrate. The design of the air flow channel in the sucking process can be divided into the air flow channel arranged on the matched smoking set or the air flow channel naturally formed by the matching clearance between the cigarette and the smoking set. The air flow is introduced into the air flow channel and then passes through the aerosol generating substrate, so that aerosol formed by heating the aerosol generating substrate is carried out, and the aerosol is transmitted through the cooling section and/or the filter section. The other type of heating cigarette (chinese patent 202010241676.5, 201911021676.8, 201911021823, etc. filed by the applicant of the present application) generally comprises an aerosol-generating substrate section, a hollow-structure smoke mixing section and a filter section, specifically, an upstream end face of the aerosol-generating substrate is sealed, and the sealing manner may be that the upstream end face of the aerosol-generating substrate is sealed by a matched smoking set, or that a rod or a gas barrier film with a sealing function is compounded on the upstream end face of the aerosol-generating substrate. And an air flow channel is arranged on the flue gas mixing section (for example, a pore canal with controllable size is arranged on the side wall of the hollow structure at the flue gas mixing section). During smoking, air does not pass through the aerosol generating substrate, air enters the hollow structural cavity of the smoke mixing section through the side wall pore canal, negative pressure is formed by the fluid flow of the smoke mixing section, heated aerosol is extracted out due to the action of pressure difference, the heated aerosol is mixed with air entering from the outside through the side wall pore canal, and then the aerosol is transmitted out through the filter tip section, and the main air flow (the weight ratio of the main air flow is 92% -98%) is air entering from the outside through the side wall pore canal, so that the heated cigarette does not need to cool the aerosol formed by mixing. The current first heated cigarette with an open upstream aerosol-generating substrate and the second technical product with a closed aerosol-generating substrate always face the problems of insufficient aerosol generation, low conversion of the effective substances of the aerosol-generating substrate and long heating waiting time in use. Typical products require a waiting time of about 15 seconds or more. The central heating mode is limited by the aerosol-generating substrate due to the heat transfer process, which results in lower aerosol-generating and transfer efficiency of the aerosol-generating substrate and a higher temperature to the heater. The packaging material used for the aerosol-generating substrate is heated in the circumferential heating mode, so that other substances are more likely to be gener