Aerosol-Generating Bead Using Thermoreversible Gel Substrate
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Solution Overview
Problem
Current aerosol-generating technologies for cigarettes rely on combustion, which is being replaced by a demand for heating-based methods to produce aerosols, and existing heating-type cigarettes or aerosol-generating apparatuses face challenges in efficiently generating aerosols without combustion.
Innovation Solution
An aerosol-generating article comprising 2.5 wt% agar, 60 wt% to 90 wt% glycerin, and 7.5 wt% to 37.5 wt% water, which maintains a bead shape at room temperature and generates aerosols when heated by an electric heater, optionally including alginate and other components like nicotine and flavorings, and can be integrated into a cigarette or cartridge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a gel substrate is used that is solid at room temperature, then storage stability and shape maintenance are improved, but aerosol generation efficiency upon heating may be reduced
Solution Approach 1:
The gel substrate utilizes temperature-dependent parameter changes to transition from a solid state at room temperature (maintaining shape and stability) to a softened state when heated (enabling efficient aerosol generation). This thermoreversible gelation property allows the same material to satisfy both storage stability and aerosol generation requirements under different temperature conditions.
2Strength
If the aerosol-generating article is held together by a holder, then structural integrity is improved, but device complexity and potential leakage points are increased
Solution Approach 1:
The aerosol-generating article achieves self-service by utilizing the inherent binding properties of the gel substrate to hold the article together without requiring an external holder. The gel's viscoelastic characteristics provide sufficient structural integrity while eliminating additional components, thereby reducing device complexity and potential leakage points.
3Productivity
If the aerosol-generating article is in a loose granular form, then aerosol generation is improved, but handling and positioning control become difficult
Solution Approach 1:
The invention employs a composite material structure where granular aerosol-generating particles are embedded within or combined with a gel matrix. This composite approach allows the article to maintain a controllable shape (improving handling and positioning) while still enabling efficient aerosol generation from the granular components when heated.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for the efficient generation of aerosols without combustion, maintaining the shape of the aerosol-generating article until liquefaction and preventing unnecessary leakage, while providing excellent moldability and hardness, thus addressing the need for alternative aerosol generation methods.
Implementation Method 1
an electrical heater connected to the electrical power supply; and a substrate container comprising a blind cavity containing an aerosol-forming substrate in the form of a gel that is solid at room temperature; wherein the electrical heater is external to the substrate container and is configured to heat the substrate container without contacting the aerosol-forming substrate to generate a vapour from the aerosol-forming substrate
Implementation Method 2
heat the substrate container without contacting the aerosol-forming substrate to generate a vapour from the aerosol-forming substrate
Data Source
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AI summary
An aerosol-generating article may be fabricated in the form of a bead. For example, the aerosol-generating article may be fabricated in the form of a sphere having a predetermined diameter. Alternatively, the aerosol-generating article may be fabricated in an oval shape, a droplet shape, etc. Also, the aerosol-generating article may be fabricated in various sizes.