Aerosol Article with Plasticized Filters for Uniform Nicotine Transfer

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Solution Overview

Problem

Existing aerosol-generating articles face challenges in ensuring uniform nicotine transfer and smoking taste without heating, often resulting in defects such as recessed parts and requiring preheating, which affects service life and convenience.

Innovation Solution

An aerosol-generating article design incorporating a medium segment with pH-treated tobacco granules and cellulose acetate filters containing a plasticizer within specific content ranges, allowing nicotine adsorption and uniform nicotine transfer without heating, and using a heater for low-temperature heating to enhance taste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If heating is used to generate aerosol, then aerosol generation is effective, but device service life decreases and preheating is required

Engineering Contradiction:

Improveaerosol generation efficiencyVSAvoiddevice service life

Core Design Contradiction:

ProductivityVSDuration of action of stationary object

Solution Approach 1:

The patent employs a disposable aerosol-generating article (cigarette stick) that is discarded after use, eliminating the need for a reusable heating device. This allows effective aerosol generation without compromising device service life, as the article is designed for single-use and disposed of after nicotine delivery is complete.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Strength

If plasticizer content is increased to prevent recess defects, then structural integrity improves, but manufacturing precision requirements change

Engineering Contradiction:

Improvefilter structural integrityVSAvoidplasticizer content control

Core Design Contradiction:

StrengthVSManufacturing precision

Solution Approach 1:

The patent specifies a precise plasticizer content range (4-11% by weight) in the cellulose acetate filter to prevent recess defects while maintaining structural integrity. This parameter optimization balances the competing requirements of strength and manufacturing precision, ensuring reliable production without excessive complexity.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If nicotine is adsorbed into segments without heating, then uniform nicotine transfer is achieved, but nicotine transfer efficiency decreases

Engineering Contradiction:

Improvenicotine transfer uniformityVSAvoidnicotine transfer efficiency

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

The patent pre-adsorbs nicotine into the cellulose acetate filter segments during manufacturing, creating a uniform distribution before use. This preliminary action ensures consistent nicotine delivery without requiring heating, as the nicotine is already positioned for gradual release during inhalation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent optimizes the plasticizer content (4-11%) to maintain filter porosity and structure that facilitate efficient nicotine diffusion. This parameter control enables sufficient nicotine transfer efficiency while maintaining the non-heating, uniform delivery mechanism.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If plasticizer content is set too high, then recess defects are prevented, but filter hardness decreases

Engineering Contradiction:

Improvedefect preventionVSAvoidfilter hardness

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent defines an optimal plasticizer content range (4-11% by weight) that balances defect prevention with hardness maintenance. Within this range, the filter remains free of recess defects while retaining sufficient structural hardness for proper function and handling.

Inventive Principle:

Principle #35Parameter changes

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

Ensures uniform nicotine transfer and smoking taste without heating, eliminates defects, and extends the device's service life by allowing non-heating operation, enhancing user convenience and nicotine transfer efficiency.

Implementation Method 1

nicotine adsorbed into the first segment or the second segment may be spread from the medium segment

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 2

nicotine transfer without heating

Methodology Applied

Scientific EffectDiffusion: Diffusion

Implementation Method 3

The medium may be pH-treated and nicotine spread from the medium may be adsorbed into the first segment or the second segment. The medium may be pH-treated to be in a range of 7.0 to 9.5.

Methodology Applied

Scientific EffectpH treatment:

Data Source

PatentUS20250325019A1Aerosol generation product

Publication Date: 2025.10.23 KT&G CO LTD

AI summary

An aerosol generation product according to one embodiment comprises: a medium segment filled with a medium; and a first segment arranged upstream of the medium segment and/or a second segment arranged downstream of the medium segment, wherein the first segment or the second segment is composed of a cellulose acetate filter comprising a plasticizer, and the amount of plasticizer can be set in a range at which no indentations are formed on the first segment or the second segment.