Smoking Article Constituent Member Using High-RI Cooling Agents

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Smoking articles face issues with volatile cooling sensation components like menthol evaporating during storage, leading to reduced intensity and increased bitter flavor, necessitating a solution that maintains strong cooling sensation with minimal bitterness and improved storage resistance.

Innovation Solution

Incorporating a cooling sensation agent with a retention index (RI) of 1300 or greater, preferably 2,000 to 2,600, such as methyl menthol derivatives, into the smoking article's constituent member, which is scented using a flavoring ingredient, enhances storage resistance and reduces bitter flavor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the amount of cooling sensation component is increased to achieve required cooling sensation intensity, then cooling sensation intensity is improved, but bitter flavor increases

Engineering Contradiction:

Improvecooling sensation intensityVSAvoidbitter flavor

Core Design Contradiction:

TemperatureVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameter of the cooling sensation component by specifying a retention index (RI) of 1300 or greater in GC/MS analysis, which corresponds to specific chemical compounds with higher cooling sensation intensity and lower bitterness compared to conventional menthol

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses methyl menthol derivatives as structural analogs of menthol, which replicate the cooling sensation effect while modifying the chemical structure to reduce bitter flavor and improve storage stability

Inventive Principle:

Principle #26Copying

2Ease of manufacture

If conventional cooling sensation components are used, then manufacturing simplicity is maintained, but storage resistance deteriorates due to evaporation

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidstorage resistance

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent specifies a retention index (RI) of 1300 or greater in GC/MS analysis, which identifies chemical compounds with lower volatility and better storage stability, preventing evaporation during storage while maintaining manufacturing simplicity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces conventional volatile menthol with longer-lasting methyl menthol derivatives that maintain their cooling sensation properties over extended storage periods without requiring complex packaging systems

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Temperature

If cooling sensation component is added to constituent member, then cooling sensation intensity is improved, but the component evaporates during storage

Engineering Contradiction:

Improvecooling sensation intensityVSAvoidevaporation loss

Core Design Contradiction:

TemperatureVSLoss of substance

Solution Approach 1:

The patent changes the physical parameter of volatility by selecting compounds with retention index 1300 or greater, which have lower vapor pressure and evaporate more slowly, reducing loss during storage while maintaining cooling sensation intensity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent proactively addresses evaporation loss by pre-selecting chemical compounds with inherently lower volatility and better storage stability, preventing evaporation-related problems before they occur during storage and use

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 solution provides a strong cooling sensation with excellent storage resistance and minimal bitter flavor, ensuring consistent performance over time.

Implementation Method 1

A cooling sensation component (i.e., a type of flavoring ingredient) such as menthol is added to a constituent member of a smoking article, such as a tobacco filler, so that a cooling sensation is obtained

Methodology Applied

Scientific EffectCooling sensation:

Data Source

PatentEP4643668A1Constituent member perfumed by flavor raw material and smoking article

Publication Date: 2025.11.05 JAPAN TOBACCO INC

Figure 1~2
Figure 3~5
Figure 6

AI summary

The purpose of the present invention is to provide a constituent member perfumed by a flavor raw material, the constituent member providing strong cool feeling, being excellent in storage resistance and having less bitterness. This constituent member perfumed by a flavor raw material comprises a smoking article constituent member, and a flavor raw material, wherein the flavor raw material includes a cooling sensation agent (A) with a retention index (RI) of 1300 or more in a chromatogram obtained through analysis with gas chromatography with a mass spectrometer (GC/MS) using a column in which the stationary phase is 95% dimethylpolysiloxane/5% phenyl-methyl polysiloxane, and the flavor raw material perfumes the smoking article constituent member.