Susceptor Material Partial Cutting for Aerosol Article Manufacturing

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Solution Overview

Problem

The production of aerosol-generating articles with integrated susceptor material often results in deformation or dislocation due to high momentum cutting, which can lead to susceptor material contacting the wrapping paper, causing burns and affecting the connection process with filter plugs, and reduces the service life of cutting tools.

Innovation Solution

A method involving partial cutting of the susceptor material at predetermined precut positions to separate individual aerosol-generating articles, allowing for easier and less forceful separation of susceptor elements, which are then incorporated into the aerosol-forming substrate, reducing the risk of deformation and dislocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a susceptor material is applied in a strip form to the filter assembly, then the filter assembly can be heated uniformly in the microwave, but the susceptor material may detach during the heating process

Engineering Contradiction:
Improvesusceptor material attachment stabilityVSAvoidfilter assembly manufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSEase of manufacture

Solution Approach 1:

The susceptor material is pre-applied to the filter assembly in a controlled manufacturing process before the filter is assembled into the vaping device. This preliminary application ensures proper adhesion and positioning, preventing detachment during subsequent microwave heating while maintaining manufacturing efficiency through automated pre-application processes

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The susceptor material is applied as a thin film or coating on the filter assembly surface. This thin film configuration allows the susceptor to conform to the filter structure, maintain stable attachment during heating, and enable uniform microwave energy distribution across the filter surface

Inventive Principle:
Principle #30Flexible shells and thin films

2Productivity

If the filter assembly is heated to a high temperature to vaporize the liquid, then the vaporization efficiency is improved, but the liquid may boil and splash out of the cartridge

Engineering Contradiction:
Improvevapor generation efficiencyVSAvoidliquid boiling and splashing
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The susceptor material is selectively applied to specific regions of the filter assembly where microwave heating is most effective, creating localized heating zones that efficiently vaporize liquid without requiring uniform high-temperature heating across the entire cartridge. This localized approach maintains vaporization efficiency while reducing the risk of bulk liquid boiling and splashing

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The susceptor material acts as an intermediary that absorbs microwave energy and converts it to heat, which is then transferred to the liquid through controlled thermal conduction. This intermediary heating mechanism allows efficient vaporization while maintaining more stable temperature control compared to direct microwave heating of the liquid, reducing violent boiling and splashing

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This method minimizes susceptor material deformation, ensures proper positioning within the aerosol-forming substrate, enhances inductive heating efficiency, and extends the service life of cutting tools by reducing the force required during the cutting process.

Implementation Method 1

the filter assembly is susceptible to heating in a microwave, such that when the cartridge is placed in a microwave and the microwave is activated, the filter assembly heats up and vaporizes the liquid

Methodology Applied
Scientific EffectMicrowave heating: Dielectric Heating

Implementation Method 2

the filter assembly heats up and vaporizes the liquid, allowing the user to inhale the vapor

Methodology Applied
Scientific EffectVaporization: Evaporation

Data Source

PatentEP4346457B1Method for producing aerosol-generating articles including a band of susceptor material
Publication Date: 2026.04.29 PHILIP MORRIS PRODUCTS SA
  • EP4346457B1 patent drawingFigure 1A~1B
  • EP4346457B1 patent drawingFigure 2
  • EP4346457B1 patent drawingFigure 3

AI summary

The invention relates to a method for producing individual aerosol- generating articles each comprising an individual substrate section, the substrate section comprising aerosol-forming substrate (12A) with a susceptor element, the method comprising the method steps of: • A) providing a continuous band of susceptor material (16A), • B) partially cutting the continuous band of susceptor material at a predetermined precut position to produce a partially cut band of susceptor material (16B), • C) producing the aerosol-generating articles employing the partially cut band of susceptor material, wherein the precut position separates individual aerosol-generating articles from each other.