Flat Tobacco Article Gap Design for Direct Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Flat-shaped tobacco articles face inefficiencies in heating due to the presence of a paper wrapper acting as a thermal barrier and challenges with internal heating, which reduces the performance of heat-not-burn devices.
Innovation Solution
A flat-shaped tobacco article design featuring a substrate layer with a gap to accommodate a heating blade, eliminating the need for a paper wrapper and allowing direct heat transfer, while the mouthpiece portion includes a core for filtering and cooling, enhancing overall heating efficiency and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a paper wrapper is used to wrap the tobacco portion, then the external shape and appearance are preserved, but heating efficiency is reduced due to thermal barrier
Solution Approach 1:
The invention extracts the paper wrapper from the tobacco portion, eliminating it entirely. Instead of wrapping the tobacco, the design uses a substrate layer with a gap that directly receives the heating blade, removing the thermal barrier while preserving the flat shape through the mouthpiece portion and wrapper structure.
Solution Approach 2:
The tobacco article is segmented into distinct functional zones: a mouthpiece portion for aesthetic and structural purposes, a substrate layer for vaporization, and a gap for heating access. This segmentation allows each component to fulfill its specific function without compromising overall performance.
2Temperature
If internal heating is used for flat-shaped tobacco articles, then heating can be achieved, but heating efficiency is reduced due to thermal barrier from wrapper
Solution Approach 1:
The gap acts as an intermediary structure that enables direct contact between the heating blade and the substrate layer. This intermediary design eliminates the need for heat to penetrate through a wrapper, allowing efficient thermal transfer while maintaining the flat article shape.
3Quantity of substance
If substrate layer is made thicker, then quantity of vaporizable material is increased, but heating efficiency may be reduced
Solution Approach 1:
The substrate layer is designed with non-uniform thickness: thicker regions contain greater quantities of vaporizable material for extended usage, while thinner regions maintain close proximity to the heating blade for efficient heat transfer. This local variation in thickness optimizes both material quantity and heating efficiency simultaneously.
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 increases heating efficiency by eliminating thermal barriers, prolongs the usage time by allowing a greater quantity of vaporizable material, and maintains an attractive appearance, while the mouthpiece portion provides filtering and cooling effects.
Implementation Method 1
heating the substrate by conduction, convection and/or radiation
Implementation Method 2
heating the substrate by conduction, convection and/or radiation
Implementation Method 3
heating the substrate by conduction, convection and/or radiation
Implementation Method 4
the mouthpiece portion comprises a core and a wrapper forming an internal surface and arranged around the core so as its entire internal surface is in contact with the core
Implementation Method 5
the mouthpiece portion comprises a core and a wrapper forming an internal surface and arranged around the core so as its entire internal surface is in contact with the core
Data Source
AI summary
A flat-shaped tobacco article configured to operate with an aerosol generating device and extending along an article axis between a mouth end and an abutting end includes a mouthpiece portion adjacent to the mouth end and a tobacco portion adjacent to the abutting end, the tobacco portion including a substrate layer extending along the article axis and forming two opposite sides, a wrapper forming an internal surface and arranged around the substrate layer so that its internal surface is in contact with one side of the substrate layer and forms a gap with the other side of the substrate layer, the gap being adapted to receive a heating blade of the aerosol generating device.