Susceptor Patch Bonding in Aerosol Generating Articles
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Solution Overview
Problem
Current methods for manufacturing aerosol generating articles for use with portable aerosol generating devices are not efficient for mass production, as they often result in soiling of apparatus components and lack consistency in product characteristics.
Innovation Solution
A method involving a continuous web of aerosol generating substrate and susceptor material, where adhesive is intermittently applied to the susceptor material, cut into patches, and adhered to the substrate, forming a continuous rod that is then cut into individual articles, minimizing soiling and ensuring consistent positioning and bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adhesive is continuously applied to the susceptor material web, then bonding consistency is improved, but soiling of cutting unit increases
Solution Approach 1:
The adhesive application is segmented into discrete adhesive areas spaced along the susceptor material web, with non-adhesive areas between them. This segmentation allows the cutting unit to cut through non-adhesive areas without encountering adhesive, thereby maintaining bonding consistency where adhesive is applied while preventing soiling of the cutting unit.
2Productivity
If mass production of aerosol generating articles is implemented, then productivity is improved, but soiling of apparatus components increases
Solution Approach 1:
The susceptor material web is processed continuously through the apparatus with adhesive applied only in segmented areas, and the susceptor patches are cut from non-adhesive areas. This enables continuous mass production while preventing adhesive from soiling the cutting unit and other apparatus components.
Solution Approach 2:
The non-adhesive areas act as intermediaries or buffers between the adhesive application zones and the cutting unit. By positioning cutting zones in non-adhesive areas, the system allows continuous processing without direct contact between adhesive and cutting components, enabling mass production without soiling.
3Reliability
If susceptor patch positioning is optimized for heat transfer, then aerosol generation efficiency is improved, but manufacturing complexity increases
Solution Approach 1:
The susceptor material web is divided into alternating adhesive and non-adhesive areas, allowing susceptor patches to be positioned at precise intervals. This segmentation enables optimized heat transfer positioning while using simple, continuous processing steps that do not significantly increase manufacturing complexity.
Solution Approach 2:
The manufacturing process maintains continuous movement of the susceptor material web through the apparatus, with adhesive application and cutting operations performed continuously in sequence. This continuous processing achieves precise susceptor patch positioning for optimal heat transfer without requiring complex intermittent or batch processing steps.
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 the mass production of aerosol generating articles with consistent characteristics, reducing wear on cutting units and improving user acceptance by embedding the susceptor fully within the substrate for enhanced heat transfer and aerosol generation.
Implementation Method 1
intermittently applying an adhesive to a surface of the continuous web of susceptor material to form adhesive areas on the surface
Implementation Method 2
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 which is transferred, for example by conduction, to the aerosol generating substrate
Implementation Method 3
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 or a continuous strip of an aerosol generating substrate having a substantially flat surface; (ii) providing a continuous web of susceptor material; (iii) intermittently applying an adhesive to a surface of the continuous web of susceptor material to form adhesive areas on the surface; (iv) continuously cutting the continuous web of susceptor material at positions between the adhesive areas to form at least one susceptor patch ; (v) adhering the susceptor patch to the substantially flat surface of the continuous web or the continuous strip of aerosol generating substrate; and (vi) forming the continuous web or the continuous strip of aerosol generating substrate and the at least one susceptor patch adhered to the surface thereof into a continuous rod