Cigarette Filter Denier Optimization for Aerosol Atomization

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Solution Overview

Problem

Existing heating-type cigarettes and aerosol generating devices suffer from insufficient atomization, leading to lower smoking satisfaction compared to combustion-type cigarettes.

Innovation Solution

A cigarette design featuring a tobacco rod wrapped with an aerosol generating substrate and a filter made of cellulose acetate tow with a total denier of 22,000 to 25,000, which enhances atomization and smoking satisfaction by optimizing the filter's suction resistance and hardness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a heating-type cigarette or aerosol generating device is used, then combustion is avoided and alternative smoking method is provided, but atomization amount is insufficient and smoking satisfaction is lower

Engineering Contradiction:

Improvecombustion avoidanceVSAvoidatomization amount

Core Design Contradiction:

Object-affected harmful factorsVSQuantity of substance

Solution Approach 1:

The patent optimizes the denier of cellulose acetate tow within a specific range (22,000 to 25,000) to control suction resistance and improve atomization. By adjusting this physical parameter of the filter material, the device achieves better aerosol generation while maintaining the heating-based non-combustion approach.

Inventive Principle:

Principle #35Parameter changes

2Quantity of substance

If the filter's suction resistance is reduced to improve atomization, then smoking satisfaction increases, but filtration effectiveness may be compromised

Engineering Contradiction:

Improveatomization amountVSAvoidfiltration effectiveness

Core Design Contradiction:

Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent specifies a precise denier range (22,000 to 25,000) for cellulose acetate tow that optimizes the balance between suction resistance and filtration. This parameter optimization allows the filter to maintain adequate filtration while permitting sufficient aerosol passage for satisfactory atomization.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The use of cellulose acetate tow as a composite filter material provides both filtration capability and controlled suction resistance. The specific denier range ensures the composite structure achieves the dual function of filtering harmful substances while allowing adequate aerosol flow for improved atomization.

Inventive Principle:

Principle #40Composite materials

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

The cigarette improves smoking satisfaction by increasing the atomization amount and reducing suction resistance, while maintaining effective filtration and flavor delivery.

Implementation Method 1

the filter comprises cellulose acetate tow having a total denier of 22,000 to 25,000

Methodology Applied

Scientific EffectSuction resistance: Pressure Drop

Data Source

PatentUS12121055B2Cigarette for aerosol generating device and aerosol generating device using cigarette

Publication Date: 2024.10.22 KT&G CO LTD

AI summary

A cigarette for an aerosol generating device includes a tobacco rod including an aerosol generating substrate wrapped with a wrapper and a filter through which an aerosol generated from the aerosol generating substrate passes. The filter comprises cellulose acetate tow having a total denier of a preset value.