Convoluted Paper Upstream Element to Reduce Material Dislodgement
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Solution Overview
Problem
Heated aerosol-generating articles experience issues with aerosol-generating material dislodgement, leading to inconsistent aerosol quality and device malfunction due to material falling into the cavity of the aerosol-generating device.
Innovation Solution
Incorporating an upstream element with a tubular portion and a convoluted sheet defining longitudinally extending channels, where the convoluted sheet has a basis weight of less than or equal to about 100 grams per square metre, to prevent aerosol-generating material dislodgement and maintain consistent aerosol quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If heating is applied to the aerosol-generating substrate, then aerosol generation is improved, but aerosol-generating material dislodgement increases
Solution Approach 1:
The upstream element is divided into multiple functional segments: a filter portion for capturing dislodged material, a convoluted sheet portion for structural support and material containment, and a tubular portion for airflow guidance. This segmentation allows each component to address specific aspects of the contradiction between heating-induced aerosol generation and material dislodgement.
Solution Approach 2:
The upstream element acts as an intermediary component positioned between the heat source and the aerosol-generating substrate. It mediates the interaction by providing a protective barrier that captures dislodged material while allowing controlled airflow to reach the substrate for effective heating and aerosol generation.
2Manufacturing precision
If heating is applied to the aerosol-generating substrate, then aerosol quality consistency is improved, but device malfunction risk increases
Solution Approach 1:
The upstream element is positioned to prevent harmful effects before they can affect the device. The filter portion captures dislodged material in advance, and the convoluted sheet provides structural containment, preventing material from falling into the device cavity and causing malfunction while allowing consistent heating to maintain aerosol quality.
Solution Approach 2:
The upstream element serves as a protective intermediary that isolates the device cavity from potential contamination by dislodged aerosol-generating material, enabling consistent heating operations without risking device malfunction.
3Reliability
If a barrier element is added to prevent material dislodgement, then material containment is improved, but device complexity increases
Solution Approach 1:
Multiple functions are merged into the upstream element: the filter portion combines filtration with material containment, the convoluted sheet provides both structural support and additional containment, and the tubular portion guides airflow while maintaining the barrier function. This merging reduces overall device complexity while achieving reliable material containment.
Solution Approach 2:
The upstream element performs multiple functions simultaneously: it filters dislodged material, contains aerosol-generating material, guides airflow to the substrate, and provides structural support. This multi-functionality eliminates the need for separate components, reducing device complexity while improving material containment.
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 upstream element effectively reduces aerosol-generating material dislodgement, ensuring consistent aerosol quality and optimal device functioning by restricting material movement and preventing it from entering the device cavity.
Implementation Method 1
an upstream element located upstream of the aerosol-generating substrate. The upstream element comprises a tubular portion defining an inner region of the upstream element, and a convoluted sheet defining a plurality of longitudinally extending channels in the inner region
Implementation Method 2
volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source to the aerosol-generating substrate
Implementation Method 3
volatile compounds are released from the aerosol-generating substrate by heat transfer from the heat source
Implementation Method 4
As the released compounds cool, they condense to form an aerosol that is inhaled by the user
Data Source
AI summary
An aerosol-generating article is provided including an aerosol-generating substrate and an upstream element located upstream of the aerosol-generating substrate, the upstream element including: a tubular portion defining an inner region of the upstream element, and a convoluted paper sheet defining a plurality of longitudinally extending channels in the inner region, the convoluted paper sheet having a basis weight of less than or equal to about 100 grams per square metre, the sheet having a width of at least about 50 millimetres, and the convoluted paper sheet having a weight of at least about 20 milligrams.