Inductively Heatable Susceptor for Aerosol Articles
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Solution Overview
Problem
There is a need for an aerosol generating article that optimizes the characteristics of the aerosol produced when used with an aerosol generating device, which typically employs induction heating, and a method for manufacturing such articles that simplifies production while ensuring structural integrity and efficient heat transfer.
Innovation Solution
The aerosol generating article consists of a first inductively heatable tubular member surrounded by a second body of aerosol forming material, which may include sheets or foam, wrapped around a cylindrical structure, allowing for efficient heat transfer and optimized aerosol production. The manufacturing method involves wrapping sheets around the tubular members and adhering parts to ensure structural integrity and simplify the production process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex multi-layer structure is used to optimize aerosol characteristics, then aerosol generation quality is improved, but manufacturing complexity increases
Solution Approach 1:
The aerosol generating article is divided into distinct functional layers: an inductively heatable susceptor layer for heat generation, an aerosol forming material layer for vaporization, and a porous support structure for material distribution. This segmentation allows each layer to be optimized independently while simplifying the overall manufacturing process through modular assembly.
Solution Approach 2:
The invention employs composite material structures combining different functional materials: a susceptor material (such as metal foil or ceramic) combined with aerosol forming materials (such as nicotine-containing substances or flavorings), and porous support materials (such as cellulose or plastic meshes). These composite structures achieve optimized aerosol generation while maintaining manufacturability through established material bonding techniques.
2Productivity
If heat transfer efficiency is increased through direct contact between susceptor and aerosol material, then aerosol production efficiency is improved, but structural integrity becomes difficult to maintain
Solution Approach 1:
The invention implements local quality by creating intimate thermal contact between the susceptor and aerosol forming material at the heating interface, while maintaining structural integrity through a separate porous support structure. The susceptor makes direct contact with the aerosol material in the heating zone for efficient heat transfer, while the porous support provides mechanical strength and material distribution throughout the article.
Solution Approach 2:
A porous support structure acts as an intermediary element between the susceptor and aerosol forming material. This mediator provides thermal conductivity pathways for efficient heat transfer while maintaining structural integrity and ensuring uniform distribution of the aerosol forming material during the heating process.
3Stability of the object's composition
If uniform heating is achieved through optimized susceptor design, then aerosol consistency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention achieves uniform heating by optimizing key parameters of the susceptor design including thickness (typically 1-10 micrometers), material composition (selecting materials with appropriate magnetic permeability and electrical conductivity), and geometric configuration. These parameter optimizations ensure consistent heat distribution across the aerosol forming material while maintaining compatibility with standard manufacturing tolerances.
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
This design ensures uniform heating and optimal aerosol generation, with improved airflow and structural integrity, facilitating efficient aerosol production and simplified manufacturing.
Implementation Method 1
an induction coil is provided with the device and an induction heatable susceptor is provided with the aerosol generating article. Electrical energy is provided to the induction coil when a user activates the device which in turn generates an alternating electromagnetic field. The susceptor couples with the electromagnetic field and generates heat
Implementation Method 2
The first tubular member being inductively heatable in the presence of a time varying electromagnetic field
Implementation Method 3
The susceptor couples with the electromagnetic field and generates heat which is transferred, for example by conduction, to the aerosol forming material and an aerosol is generated as the aerosol forming material is heated
Data Source
AI summary
An aerosol generating article includes a first body of aerosol forming material, a first tubular member surrounding the first body of aerosol forming material which is inductively heatable in the presence of a time varying electromagnetic field, a second body of aerosol forming material surrounding the first tubular member and a second tubular member surrounding the second body of aerosol forming material. The second body of aerosol forming material includes at least one sheet of aerosol forming material wrapped around the first tubular member and/or the second body of aerosol forming material includes foam material and/or at least part of the second body of aerosol forming material is adhered to the first tubular member and/or the second tubular member. Methods for manufacturing aerosol generating articles are also described.