Continuous-Web Aerosol Article Manufacturing With Susceptor Patches
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Solution Overview
Problem
Current methods for manufacturing aerosol generating articles, particularly for use with induction heating systems, face challenges in mass-producing aerosol generating articles consistently and efficiently, with wear on cutting units and inconsistent heat transfer being significant issues.
Innovation Solution
A method involving a continuous web of aerosol generating substrate with susceptor patches applied along the center line, followed by cutting exposed regions to form aerosol generating strips and forming them into a continuous rod, minimizing susceptor patch cutting and ensuring accurate positioning for uniform heating and consistent production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional cutting methods are used to manufacture aerosol generating articles, then production can be achieved, but wear on cutting units occurs and manufacturing consistency deteriorates
Solution Approach 1:
The susceptor is segmented into discrete susceptor patches that are applied to the aerosol generating substrate. These patches are defined by adhesive regions that bond the susceptor material to the substrate, creating distinct, consistent units for mass production without requiring continuous cutting of the susceptor material itself.
Solution Approach 2:
The susceptor patches are prepared and positioned on the aerosol generating substrate before the final article assembly. The adhesive regions are applied in advance to define the patches, ensuring consistent positioning and eliminating the need for precise cutting operations during production.
2Manufacturing precision
If susceptor patches are cut during manufacturing, then positioning can be achieved, but cutting unit wear increases and production efficiency decreases
Solution Approach 1:
The mechanical cutting system is replaced with an adhesive bonding system. Instead of using cutting units to define and position susceptor patches, the invention uses adhesive regions applied to the substrate to bond and position pre-cut or pre-formed susceptor patches, eliminating mechanical wear and increasing production speed.
3Ease of manufacture
If susceptor patches are not uniformly positioned, then manufacturing is simpler, but heat transfer consistency deteriorates
Solution Approach 1:
The adhesive regions provide a self-aligning mechanism that ensures consistent positioning of susceptor patches. The adhesive material creates a defined bonding interface that naturally positions the susceptor patches at consistent locations on the aerosol generating substrate, providing inherent feedback for uniform heat transfer without complex positioning mechanisms.
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 efficient mass production of aerosol generating articles with effective heat transfer and uniform heating, ensuring repeatable characteristics and user acceptance.
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
employ an induction heating system. In such a device, an induction coil is provided in the device and an inductively heatable susceptor is provided to heat 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
Implementation Method 4
heating the aerosol generating substrate to a temperature typically in the range 150° C. to 300° C. Heating the aerosol generating substrate to a temperature within this range, without burning or combusting the aerosol generating substrate, generates a vapour which typically cools and condenses to form an aerosol for inhalation by a user of the device
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.