Aerosol Substrate Web Layout for Uniform Induction Heating
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Solution Overview
Problem
Current aerosol generating devices face challenges in efficiently and consistently manufacturing aerosol generating articles for use with induction heating systems, particularly in mass production without compromising the integrity and performance of the aerosol generating substrate and susceptor components.
Innovation Solution
A method involving a continuous web of aerosol generating substrate with applied susceptor patches, where the susceptor patches are adhered and the exposed regions are cut to form aerosol generating strips, which are then formed into a continuous rod, ensuring minimal wear and consistent positioning for effective heat transfer and uniform heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a continuous web of aerosol generating substrate is used with susceptor patches applied along the centre line, then manufacturing consistency and heat transfer effectiveness are improved, but the complexity of positioning and alignment increases
Solution Approach 1:
The continuous web is segmented into individual strips by cutting the exposed regions on each side of the susceptor patch, creating discrete aerosol generating articles while maintaining consistent susceptor positioning throughout the manufacturing process
Solution Approach 2:
The susceptor patches are applied to the continuous web before cutting into individual strips, ensuring that the susceptor is already in its correct position and orientation relative to the aerosol generating substrate before the article is finalized
2Productivity
If high-speed continuous manufacturing is implemented, then productivity increases, but maintaining uniform heating characteristics becomes more difficult
Solution Approach 1:
The manufacturing process operates continuously with the susceptor patches applied along the centre line of the continuous web, enabling uninterrupted high-speed production while maintaining consistent heating characteristics through repeated geometric configuration
Solution Approach 2:
The susceptor patches are positioned at specific locations along the centre line of the continuous web, creating a repeated geometric configuration that ensures uniform heating characteristics across all manufactured articles while enabling continuous high-speed production
3Loss of substance
If the exposed regions are cut to form aerosol generating strips, then material utilization improves, but the risk of damaging the susceptor patch increases
Solution Approach 1:
The continuous web is segmented into individual strips by cutting only the exposed regions on each side of the susceptor patch, maximizing material utilization while preserving the integrity of the susceptor through selective cutting
Solution Approach 2:
The exposed regions of the continuous web are extracted and removed by cutting, forming discrete aerosol generating strips while leaving the susceptor patch intact and undamaged
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
Enables high-speed, consistent, and reliable production of aerosol generating articles with uniform heating and repeatable characteristics, minimizing susceptor wear and ensuring effective heat transfer for efficient vapour generation.
Implementation Method 1
an induction coil is provided in the device and an inductively heatable susceptor is provided to heat the aerosol generating substrate. Electrical energy is supplied 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 susceptor couples with the electromagnetic field and generates heat which is transferred, for example by conduction, to the aerosol generating substrate
Data Source
AI summary
A method for continuously manufacturing aerosol generating articles includes: (i) providing a continuous web of an aerosol generating substrate, the continuous web including a substantially flat surface having a centre line; (ii) applying at least one susceptor patch to the substantially flat surface substantially along the centre line to leave an exposed region of the continuous web of aerosol generating substrate on each side of the at least one susceptor patch; (iii) cutting the exposed regions of the continuous web of aerosol generating substrate to form a plurality of aerosol generating strips on each side of the at least one susceptor patch; and (iv) forming the plurality of aerosol generating strips and the at least one susceptor patch into a continuous rod.