Inductive Susceptor Sheet Structure for Aerosol Heat Transfer

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Solution Overview

Problem

Existing aerosol generating articles for devices that heat rather than burn aerosol material lack optimization in aerosol characteristics and are difficult to manufacture efficiently.

Innovation Solution

A sheet-type aerosol generating article with an inductively heatable susceptor positioned between aerosol generating sheets, featuring perforations and adhesive layers to ensure effective heat transfer and structural integrity, allowing for optimized aerosol generation and easy manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If an inductively heatable susceptor is positioned between aerosol generating sheets, then heat transfer efficiency is improved, but device complexity increases

Engineering Contradiction:

Improveheat transfer efficiencyVSAvoidarticle structure complexity

Core Design Contradiction:

Loss of energyVSDevice complexity

Solution Approach 1:

An inductively heatable susceptor is positioned between the aerosol generating sheets to act as an intermediary heat transfer medium. The susceptor receives electromagnetic energy from the induction heating device and converts it to thermal energy, which is then conducted to the aerosol generating material, improving overall heat transfer efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The aerosol generating article employs a composite structure consisting of multiple aerosol generating sheets combined with an inductively heatable susceptor layer. This composite construction integrates materials with different properties - the aerosol generating sheets provide the functional material while the susceptor provides efficient electromagnetic-to-thermal energy conversion.

Inventive Principle:

Principle #40Composite materials

2Productivity

If perforations are provided in aerosol generating sheets, then aerosol generation is improved, but structural integrity deteriorates

Engineering Contradiction:

Improveaerosol generation efficiencyVSAvoidsheet structural integrity

Core Design Contradiction:

ProductivityVSStrength

Solution Approach 1:

Perforations are provided in the aerosol generating sheets to create a porous structure that facilitates aerosol generation. The perforations allow for better airflow and heat distribution through the aerosol material, improving vaporization efficiency and aerosol formation while the surrounding material maintains structural support.

Inventive Principle:

Principle #31Porous materials

3Reliability

If multiple aerosol generating sheets are used, then aerosol characteristics are optimized, but manufacturing difficulty increases

Engineering Contradiction:

Improveaerosol characteristic consistencyVSAvoidarticle assembly ease

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Multiple aerosol generating sheets are merged together in a stacked configuration with the inductively heatable susceptor positioned between them. This merging approach allows for optimized aerosol characteristics through multiple material layers while maintaining manufacturing simplicity through a straightforward assembly process where sheets are stacked and bonded.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention allows for variation in the number of aerosol generating sheets, their thicknesses, and material compositions to optimize aerosol characteristics. By changing these parameters, different aerosol profiles can be achieved while maintaining the same basic multi-sheet structure that remains relatively simple to manufacture.

Inventive Principle:

Principle #35Parameter changes

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 provides optimized aerosol generation characteristics and facilitates efficient manufacturing by ensuring effective heat transfer and structural integrity, while allowing for varied article forms and easy handling.

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

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

The susceptor couples with the electromagnetic field and generates heat which is transferred, for example by conduction, to the aerosol generating material

Methodology Applied

Scientific EffectHeat conduction: Conduction (thermal)

Data Source

PatentEP3731680B1Aerosol generating articles and methods for manufacturing the same

Publication Date: 2026.02.04 JT INTERNATIONAL SA

Figure 1~2
Figure 3~4
Figure 5a~5c

AI summary

A sheet-type aerosol generating article (1) comprises at least two aerosol generating sheets (10, 12) each comprising aerosol generating material (14) and an inductively heatable susceptor (16). The inductively heatable susceptor (16) is positioned between the aerosol generating sheets (10, 12) and each of the aerosol generating sheets (10, 12) has an exposed surface (10a, 12a). Methods for manufacturing sheet-type aerosol generating articles are also disclosed.