Flavor Inhalation Plug Composition for Stable Flavor Release

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Solution Overview

Problem

Conventional flavor inhalation articles experience a decrease in flavoring material release as the inhalation period progresses, leading to an unstable flavor delivery.

Innovation Solution

A flavor inhalation article with a tip-end plug containing a filtration material and flavoring material composition, including hydroxypropyl cellulose, is designed to stabilize flavor release throughout the inhalation period by supporting the flavoring material on a first filtration material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional flavor inhalation articles are used, then initial flavor delivery is achieved, but flavor release decreases as inhalation period progresses

Engineering Contradiction:
Improveflavor release stabilityVSAvoidinhalation period
Core Design Contradiction:
Stability of the object's compositionVSDuration of action of moving object

Solution Approach 1:

The flavor inhalation article is divided into multiple functional segments: a tip-end plug containing flavoring material composition supported on first filtration material, a flavor-generating portion with flavor source, and a filter plug with second filtration material. This segmentation allows different portions to release flavor at different stages, maintaining stable flavor delivery throughout the inhalation period.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The tip-end plug is pre-loaded with flavoring material composition on the first filtration material before use. This preliminary placement ensures that flavoring material is available from the start of inhalation, compensating for the natural decrease in flavor release that occurs as the inhalation period progresses.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If more flavoring material is used to maintain stable release, then flavor stability improves, but cost and material consumption increase

Engineering Contradiction:
Improveflavor release stabilityVSAvoidflavoring material amount
Core Design Contradiction:
Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

Different regions of the flavor inhalation article are assigned different functions: the tip-end plug contains flavoring material composition for initial and sustained release, the flavor-generating portion provides additional flavor source, and the filter plug filters the vapor. This local differentiation optimizes flavoring material distribution, achieving stable release without excessive material consumption.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The invention changes the physical and chemical parameters of the flavoring material delivery system by using hydroxypropyl cellulose as a carrier material with specific release characteristics. This parameter change allows controlled, stable flavor release over time, reducing the total amount of flavoring material needed compared to conventional approaches.

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

The design ensures stable and consistent flavor release throughout the inhalation period, reducing the amount of flavoring material needed and enhancing user experience.

Implementation Method 1

a tip-end plug which is positioned at one end of the flavor inhalation article and includes a first filtration material and a flavoring material composition supported on the first filtration material

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Implementation Method 2

a flavoring material composition supported on the first filtration material

Methodology Applied
Scientific EffectAdsorption: Adsorption

Data Source

PatentEP4691276A1Flavor inhalation article and flavor inhalation system
Publication Date: 2026.02.11 JAPAN TOBACCO INC
  • EP4691276A1 patent drawingFigure 1
  • EP4691276A1 patent drawingFigure 2~3
  • EP4691276A1 patent drawingFigure 4~5

AI summary

A flavor inhalation article (200) having a columnar shape and comprising: a tip-end plug (210) which is positioned at one end of the flavor inhalation article (200) and includes a first filtration material (211) and a flavoring material composition supported on the first filtration material (211), the flavoring material composition comprising hydroxypropyl cellulose and a first flavoring material; a filter plug (250) which is positioned at another end of the flavor inhalation article (200) and includes a second filtration material (251); and a flavor-generating portion (220) which is positioned between the tip-end plug (210) and the filter plug (250) and contains a flavor source (221).