Susceptor Patch Placement for Continuous Aerosol Rod Manufacturing
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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.
Innovation Solution
A method involving the continuous production of aerosol generating articles by sequentially or simultaneously providing a continuous web of aerosol generating substrate and susceptor material, cutting the susceptor material into patches, and applying them to the substrate with a predefined spacing, forming a continuous rod, and cutting it into individual articles, using a rotary cutting unit with a support drum and cutting drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional batch manufacturing methods are used for aerosol generating articles, then flexibility in production is maintained, but manufacturing efficiency and consistency deteriorate
Solution Approach 1:
The patent implements continuous manufacturing by feeding aerosol generating substrate continuously through the production line, applying susceptor patches in a continuous sequence, and forming continuous rods that are subsequently cut into individual articles. This eliminates batch processing interruptions and maintains continuous productive action throughout the manufacturing system.
Solution Approach 2:
The continuous susceptor material web is segmented into discrete susceptor patches through a rotary cutting unit, which then applies individual patches at predefined intervals along the continuous substrate. This segmentation enables precise positioning and consistent spacing while maintaining continuous production flow.
2Manufacturing precision
If susceptor patches are applied manually to aerosol generating substrate, then positioning precision can be achieved, but manufacturing speed and consistency deteriorate
Solution Approach 1:
The patent replaces manual mechanical application with an automated rotary application unit that uses rotational mechanics to precisely position and apply susceptor patches. The rotary mechanism provides consistent spacing and positioning through controlled rotation and synchronization with the substrate feed rate, eliminating manual positioning variability while maintaining high speed production.
Solution Approach 2:
The susceptor patches are prepared and positioned on a rotating drum before being transferred to the moving substrate. This preliminary positioning on the rotary drum ensures precise spacing and alignment is established before the actual application occurs, guaranteeing manufacturing precision independent of substrate speed variations.
3Reliability
If aerosol generating articles are manufactured with inconsistent characteristics, then production flexibility is maintained, but aerosol generation quality and heat transfer efficiency deteriorate
Solution Approach 1:
The manufacturing system incorporates feedback control through synchronized rotation of the substrate feed mechanism, susceptor patch application drum, and rod formation process. This coordination ensures that each susceptor patch is applied at the correct position and that continuous rods are formed with consistent characteristics, providing process control that guarantees product reliability.
Solution Approach 2:
The patent controls critical manufacturing parameters including susceptor patch spacing, patch size, substrate feed rate, and rod formation conditions to ensure consistent article characteristics. By maintaining predefined and controlled parameter values throughout the continuous manufacturing process, the system produces reliable aerosol generating articles with consistent heat transfer properties.
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 consistent and repeatable mass production of aerosol generating articles with maximized heat transfer and user acceptance, ensuring consistent aerosol generation without visible susceptor patches.
Implementation Method 1
a rotary cutting unit comprising a support drum supporting the continuous web of susceptor material around its periphery and a cutting drum having a plurality of circumferentially spaced cutting elements around its periphery, wherein the cutting elements cooperate with the support drum to shear cut the continuous web of susceptor material
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
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
Implementation Method 5
a support drum supporting the continuous web of susceptor material around its periphery
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; (ii) providing a continuous web of susceptor material; (iii) continuously cutting the continuous web of susceptor material to form a plurality of susceptor patches; (iv) consecutively applying the patches to a surface of the continuous web or continuous strip of aerosol generating substrate with a predefined and constant spacing between each successive patch; and forming the web or strip of aerosol generating substrate and the patches into a continuous rod. Step (iii) uses a rotary cutting unit including a support drum supporting the continuous web of susceptor material around its periphery and a cutting drum having a plurality of circumferentially spaced cutting elements around its periphery. The cutting elements cooperate with the support drum to shear cut the continuous web of susceptor material to form the patches.