EP-4736679-A1 - AEROSOL GENERATING SUBSTRATE AND MICROWAVE HEATING METHOD

EP4736679A1EP 4736679 A1EP4736679 A1EP 4736679A1EP-4736679-A1

Abstract

An aerosol generating substrate (100) and a microwave heating method. The aerosol generating substrate (100) has at least one aerosol release channel (10), and the thickness of a wall body (20) of the aerosol release channel (10) constructed by the aerosol generating substrate (100) is 0.1-1.2 mm. This aerosol generating substrate (100) can improve the efficiency of aerosol extraction.

Inventors

LI, HANG
LI, YONGFU
LIU, YONGMING
NI, JUN
DU, JING
TANG, JIANGUO

Assignees

Smoore International Holdings Limited

Dates

Publication Date: 20260506
Application Date: 20240115

Claims (16)

An aerosol generating substrate, comprising at least one aerosol release channel, wherein a thickness of a wall of the aerosol generating substrate defining the aerosol release channel is 0.1 mm to 1.2 mm.
The aerosol generating substrate of claim 1, wherein the thickness of the wall is 0.3 mm to 0.5 mm.
The aerosol generating substrate of claim 1 or 2, wherein a thickness difference of the wall at different positions of the aerosol generating substrate is 0 to 100%; and/or, the aerosol generating substrate is manufactured by extrusion process.
The aerosol generating substrate of claim 1 or 2, wherein for each aerosol release channel, a cross-sectional area of the aerosol release channel is S1, a cross-sectional area of the wall for defining the aerosol release channel is S2, and S1:S2 = 1:1 to 5:1.
The aerosol generating substrate of claim 1 or 2, wherein the wall comprises a first wall, and the first wall defines an outer contour of the aerosol generating substrate; a portion of an inner surface of the first wall is recessed toward an outer side of the aerosol generating substrate, to enable a plurality of first grooves to be formed on an inner peripheral side of the first wall, wherein the plurality of first grooves are spaced apart; and/or, a portion of an outer surface of the first wall is recessed toward an inner side of the aerosol generating substrate, to enable a plurality of second grooves to be formed on an outer peripheral side of the first wall, wherein the plurality of second grooves are spaced apart.
The aerosol generating substrate of claim 5, wherein the aerosol generating substrate comprises the plurality of first grooves and the plurality of second grooves, and the plurality of first grooves and the plurality of second grooves are oppositely arranged in a one-to-one correspondence along a thickness direction of the wall.
The aerosol generating substrate of claim 1 or 2, wherein the wall comprises a first wall and a second wall, the first wall defines an outer contour of the aerosol generating substrate and a hollow region located inside the aerosol generating substrate, and the second wall is disposed in the hollow region to partition the hollow region into at least two aerosol release channels.
The aerosol generating substrate of claim 7, wherein there are a plurality of second wall bodies; one side of each of the plurality of second wall bodies is respectively connected to the first wall, and an opposite side of each of the plurality of second wall bodies is interconnected with each other.
The aerosol generating substrate of claim 1 or 2, wherein the aerosol release channel comprises at least one first aerosol release channel and a plurality of second aerosol release channels, and the plurality of second aerosol release channels surround the first aerosol release channel.
The aerosol generating substrate of claim 9, wherein the wall comprises a first wall, a plurality of second wall bodies, and a third wall in an annular shape; the first wall defines an outer contour of the aerosol generating substrate and a hollow region located inside the aerosol generating substrate; the plurality of second wall bodies and the third wall are all disposed in the hollow region; one side of each of the second wall bodies is respectively connected to the first wall, and an opposite side of each of the second wall bodies is respectively connected to the third wall; the first aerosol release channel is defined in the third wall, and the second aerosol release channels are collectively defined by the first wall, the third wall and two adjacent second wall bodies.
The aerosol generating substrate of claim 1 or 2, wherein the wall is provided with an air hole.
The aerosol generating substrate of claim 1 or 2, wherein the wall comprises a wave absorbing material; and/or, the wall is configured to absorb microwaves and produce heat to generate an aerosol.
The aerosol generating substrate of claim 1 or 2, wherein one end of the aerosol release channel is an open end penetrating a side of the aerosol generating substrate, and an opposite end of the aerosol release channel is a closed end; and/or, both ends of the aerosol release channel that are opposite to each other are open ends penetrating the aerosol generating substrate.
A microwave heating method, used for the aerosol generating substrate of any one of claims 1 to 13, the method comprising: heating the aerosol generating substrate with microwaves to release an aerosol generated by the aerosol generating substrate into the aerosol release channel.
The microwave heating method of claim 14, wherein there are a plurality of aerosol release channels, and the method further comprises: heating a part of the wall defining the plurality of aerosol release channels each time.
The microwave heating method of claim 14, wherein the aerosol release channel comprises at least one first aerosol release channel and a plurality of second aerosol release channels, the plurality of second aerosol release channels surround the first aerosol release channel; and the method further comprises: heating a part of the wall defining the plurality of second aerosol release channels each time.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is based on and claims priority to Chinese Patent Application No. 202310787002.9 filed on June 29, 2023, which is incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure relates to the technical field of smoke generating articles, and in particular to an aerosol generating substrate and a microwave heating method. BACKGROUND An aerosol generating substrate typically generates an aerosol in a heat-not-burn manner. Specifically, the aerosol generating substrate is heated by an external heat source to a temperature just enough to release a fragrance. The aerosol generating substrate does not burn, but is loaded with an atomization agent, which is released by heating when used to form a smoke. In related technologies, heating methods for the aerosol generating substrate include resistance heating, electromagnetic heating, microwave heating, etc. Before inhaling, the aerosol generating substrate needs to be preheated first; and after the preheating, the user can continuously inhale the aerosol generating substrate for the predetermined number of puffs to achieve the purpose of the aerosol inhalation. However, in the related technologies, the solid structure of the aerosol generating substrate has a relatively high density. During heating, it is difficult for the aerosol to circulate within the solid structure of the aerosol generating substrate in a short time, or it is difficult for the aerosol to be released from the solid structure of the aerosol generating substrate to the outside environment. As such, a significant reduction is caused in the extraction efficiency of the aerosol generating substrate, making it unable to meet the requirement of immediate inhalation. SUMMARY In view of the above, the embodiments of the present disclosure are expected to provide an aerosol generating substrate and a microwave heating method capable of improving the aerosol extraction efficiency. In order to achieve the above objectives, an embodiment of the present disclosure provides an aerosol generating substrate. The aerosol generating substrate includes at least one aerosol release channel, and a thickness of a wall of the aerosol generating substrate defining the aerosol release channel is 0.1 mm to 1.2 mm. In one embodiment, the thickness of the wall is 0.3 mm to 0.5 mm. In one embodiment, a thickness difference of the wall at different positions of the aerosol generating substrate is 0 to 100%. In one embodiment, the aerosol generating substrate is manufactured by extrusion process. In one embodiment, for each aerosol release channel, a cross-sectional area of the aerosol release channels is S1, and a cross-sectional area of the wall for defining the aerosol release channel is S2, and S1:S2 = 1:1 to 5:1. In one embodiment, the wall includes a first wall, and the first wall defines an outer contour of the aerosol generating substrate; and a portion of an inner surface of the first wall is recessed toward an outer side of the aerosol generating substrate, to enable a plurality of first grooves to be formed on an inner peripheral side of the first wall, where the plurality of first grooves are spaced apart. In one embodiment, the wall includes a first wall, and the first wall defines an outer contour of the aerosol generating substrate; and a portion of an outer surface of the first wall is recessed toward an inner side of the aerosol generating substrate, to enable a plurality of second grooves to be formed on an outer peripheral side of the first wall, where the plurality of second grooves are spaced apart. In one embodiment, the aerosol generating substrate includes a plurality of first grooves and a plurality of second grooves, and the plurality of first grooves and the plurality of second grooves are oppositely arranged in a one-to-one correspondence along a thickness direction of the wall. In one embodiment, the wall includes a first wall and a second wall, the first wall defines an outer contour of the aerosol generating substrate and a hollow region located inside the aerosol generating substrate, and the second wall is disposed in the hollow region to partition the hollow region into at least two aerosol release channels. In one embodiment, there are a plurality of second wall bodies, one side of each of the plurality of second wall bodies is respectively connected to the first wall, and an opposite side of each of the plurality of second wall bodies is interconnected with each other. In one embodiment, the aerosol release channel includes at least one first aerosol release channel and a plurality of second aerosol release channels, and the plurality of second aerosol release channels surround the first aerosol release channel. In one embodiment, the wall includes a first wall, a plurality of second wall bodies, and a third wall in an annular shape; the first wall defines an outer contour of the aerosol generating substrate and a hol