Magnetic-Field-Heated Wrapper for Uniform Material Volatilization
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Solution Overview
Problem
Existing smoking articles that release compounds by heating rather than burning tobacco or non-tobacco products face challenges in efficiently and uniformly heating the material without physical connections, which can lead to residue issues and higher costs.
Innovation Solution
A wrapper made of heater material heatable by a varying magnetic field is used, forming a closed electrical circuit to induce heating through Joule and magnetic hysteresis, allowing direct heat transfer to the aerosolizable material without external connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wrapper made of heater material is used to enable direct heating without physical connections, then heating efficiency and uniformity are improved, but device complexity increases due to the need for closed electrical circuit formation
Solution Approach 1:
The heater material is integrated directly into the wrapper structure, merging the heating function with the packaging function. The wrapper itself becomes the heating element through the formation of closed electrical circuits from heater material strips joined at opposing ends, eliminating the need for separate heating components and physical connections.
Solution Approach 2:
The wrapper structure performs dual functions: containing the aerosolizable material and serving as the heating element. The closed electrical circuit formed within the wrapper enables self-heating capability, where the wrapper material directly generates heat through Joule and magnetic hysteresis effects without requiring external heating mechanisms.
2Manufacturing precision
If heater material is joined to form closed electrical circuits, then uniform heating is achieved, but manufacturing complexity increases
Solution Approach 1:
The heater material is divided into multiple strips that are separately formed and then joined at their opposing ends to create closed electrical circuits. This segmentation allows for easier formation of individual circuit loops that can be uniformly distributed around the aerosolizable material, ensuring even heat distribution while simplifying the manufacturing process through modular assembly.
Solution Approach 2:
The heater material undergoes parameter changes through the joining process, where strips are connected to form closed circuits with specific electrical and thermal properties. The joining method and configuration can be adjusted to optimize heating uniformity while maintaining manufacturing feasibility, such as controlling the join location, strength, and electrical continuity.
3Power
If metallized foil is used as heater material, then rapid heating is achieved through Joule and magnetic hysteresis effects, but material cost increases
Solution Approach 1:
The metallized foil heater material is applied locally only where heating is required, rather than using it throughout the entire structure. The foil is formed into strips and joined to create closed circuits positioned in contact with or near the aerosolizable material, providing concentrated heating power exactly where needed while minimizing the total quantity of expensive metallized material used.
Solution Approach 2:
The wrapper structure combines metallized foil with other materials to create a composite structure that provides both heating capability and structural function. The metallized foil layer serves as the active heating element while the composite construction allows optimization of material usage, potentially using thinner or less expensive materials in non-heating portions of the wrapper.
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 method achieves rapid and uniform heating with reduced residue and lower costs, enhancing the heating efficiency and design flexibility of heating devices.
Implementation Method 1
heater material that is heatable by penetration with a varying magnetic field
Implementation Method 2
heater material that is heatable by penetration with a varying magnetic field
Implementation Method 3
heater material that is heatable by penetration with a varying magnetic field
Data Source
AI summary
An article for use with an apparatus for heating aerosolizable material to volatilize at least one component of the aerosolizable material includes a body of aerosolizable material; and a first wrapper around the body aerosolizable material. The first wrapper comprises heater material that is heatable by penetration with a varying magnetic field. The first wrapper comprises an outer surface and an inner surface and the first wrapper is arranged so that two opposing strips of the outer surface are joined along ends of the first wrapper or the first wrapper is arranged so that two opposing strips of the inner surface are joined along ends of the first wrapper, so as to form a closed electrical circuit of the heater material. A method of and apparatus for manufacturing an article for use with an apparatus for heating aerosolizable material to volatilize at least one component of the aerosolisable material are also disclosed.