Aerosol-generating article

Patent metadata

Field	Value
Publication number	US-12543777-B2
Application number	US-202117767573-A
Country	US
Kind code	B2
Filing date	Nov 2, 2021
Priority date	Nov 10, 2020
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

An aerosol-generating article according to an embodiment of the disclosure includes: a tobacco rod having an outer circumferential surface surrounded by a wrapper; a filter rod having an outer circumferential surface surrounded by the wrapper, and including a segment including a structure supporting the wrapper in a transverse direction and at least one channel formed between the wrapper and the structure: and an airflow obstruction configured to obstruct an airflow of aerosol passing through the at least one channel.

First claim

The invention claimed is:

1 . An aerosol-generating article comprising:
a tobacco rod extending along a longitudinal axis and having an outer circumferential surface surrounded by a wrapper; a filter rod extending along the longitudinal axis and having an outer circumferential surface surrounded by the wrapper, the filter rod comprising (i) a structure configured to support the wrapper in a transverse direction and (ii) at least one channel formed between the wrapper and the structure; and an airflow obstruction configured to obstruct an airflow of aerosol passing through the at least one channel, wherein the structure comprises a first plate and a second plate that extend from the longitudinal axis to an inner circumferential surface of the wrapper and are arranged to be perpendicular to each other, wherein the airflow obstruction comprises two first colliding bodies arranged in the downstream direction and the upstream direction respectively, and a second colliding body arranged between the two first colliding bodies, wherein the two first colliding bodies are coupled to the second plate and spaced apart from the first plate, and wherein the second colliding body is coupled to the first plate and the second plate, wherein the two first colliding bodies comprise (i) a support surface that supports the inner circumferential surface of the wrapper and curves in a direction towards the first plate, and (ii) a straight edge that faces the first plate, wherein the two first colliding bodies and the second colliding body are spaced apart, the distance between the second colliding body and the downstream-arranged first colliding body is different from the distance between the second colliding body and the upstream-arranged first colliding body, and wherein the two first colliding bodies are spaced apart from the first plate, the distance between the first plate and the downstream-arranged first colliding body is different from the distance between the first plate and the upstream-arranged first colliding body, wherein the second colliding body comprises a surface that extends in a direction away from the first plate, wherein the surface of the second colliding body has a first width in the direction away from the first plate that is a largest width between the surface of the second colliding body and the first plate, wherein the surface of the second colliding body has a second width in the direction away from the first plate that is a smallest width between the surface of the second colliding body and the first plate, and wherein the second width is larger than the distance between the first plate and the downstream-arranged first colliding body and the distance between the first plate and the upstream-arranged first colliding body.

2 . The aerosol-generating article of claim 1 , wherein the structure comprises a plurality of support surfaces contacting the inner circumferential surface of the wrapper in a longitudinal direction.

3 . An aerosol-generating article comprising:
a tobacco rod extending along a longitudinal axis and having an outer circumferential surface surrounded by a wrapper; a filter rod extending along the longitudinal axis and having an outer circumferential surface surrounded by the wrapper, the filter rod comprising (i) a structure configured to support the wrapper in a transverse direction and (ii) at least one channel formed between the wrapper and the structure, the structure comprising a spiral plate member spirally formed along the longitudinal axis such that the spiral plate member is hollow along the longitudinal axis, the spiral plate member comprising (a) at least one support surface spirally contacting an inner circumferential surface of the wrapper in a longitudinal direction, (b) a first edge spaced apart from the longitudinal axis by a first distance, and (c) a second edge spaced apart from the longitudinal axis by a second distance that is larger than the first distance; and an airflow obstruction configured to obstruct an airflow of aerosol passing through the at least one channel, wherein the airflow obstruction comprises at least one rod-shaped colliding body spaced apart from the longitudinal axis by a certain distance and passing through the spiral plate member in the longitudinal direction, and a plurality of holes formed in the spiral plate member.

4 . The aerosol-generating article of claim 3 , wherein the spiral plate member comprises:
a first spiral portion having no overlapping portions in the longitudinal direction; and a second spiral portion having no overlapping portions in the longitudinal direction and extending from an end of the first spiral portion, and wherein the plurality of holes do not overlap between the first spiral portion and the second spiral portion in the longitudinal direction.

5 . The aerosol-generating article of claim 1 , wherein the wrapper comprises at least one ventilation hole located in a portion surrounding the filter rod and allowing an external component to be introduced therethrough into the at least one channel.

6 . The aerosol-generating article of claim 3 , wherein the wrapper comprises at least one ventilation hole located in a portion surrounding the filter rod and allowing an external component to be introduced therethrough into the at least one channel.

Assignees

• Kt & G Corp

Inventors

• Lee Moon Bong

Classifications

• A24D3/043

  with ventilation means, e.g. air dilution (A24D3/041 takes precedence) · CPC title

• A24D1/027

  with ventilating means, e.g. perforations · CPC title

• A24D3/0275

  for filters with special features · CPC title

• A24D3/041

  with adjustable means for modifying the degree of filtration of the filter · CPC title

• A24D1/045

  with smoke filter means (A24D1/047 takes precedence) · CPC title