Sustained-Release Menthol via Glycerin Solid Dispersion
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Solution Overview
Problem
Flavorings in smoking articles are volatile, leading to a continuous decrease in taste during distribution and consumption, resulting in poor scent retention and storability.
Innovation Solution
A method of preparing sustained-release menthol involves melting menthol, mixing it with glycerin to create a liquid mixture, and then stirring to form a solid dispersion where the menthol is uniformly dispersed in glycerin, with a weight ratio of menthol to glycerin ranging from 6:4 to 8:2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If flavoring liquid is directly added to smoking material, then flavoring application is simple, but flavoring is lost due to volatility during distribution and consumption
Solution Approach 1:
The patent uses a composite material system consisting of menthol, glycerin, and water in specific ratios (menthol 60-80 wt%, glycerin 10-30 wt%, water 5-15 wt%). This composite formulation creates a sustained-release flavoring composition that reduces volatility and prevents flavoring loss during distribution and consumption while maintaining ease of application to smoking materials.
2Stability of the object's composition
If menthol is mixed with glycerin in equal amounts, then mixture is stable, but uniform dispersion of menthol is difficult to achieve
Solution Approach 1:
The patent optimizes the compositional parameters by setting menthol content at 60-80 wt%, glycerin at 10-30 wt%, and water at 5-15 wt%. This specific parameter range ensures both mixture stability and uniform dispersion of menthol, resolving the contradiction between stability and manufacturing precision.
3Productivity
If flavoring is applied to smoking article, then scent expression is enhanced, but scent retention and storability deteriorate over time
Solution Approach 1:
The patent uses glycerin as an intermediary substance that mediates between menthol and the smoking article matrix. Glycerin's hygroscopic properties and solubility characteristics enable sustained release of menthol, enhancing scent expression while improving scent retention and storability over time.
4Duration of action of stationary object
If menthol content is increased in the mixture, then scent persistence is improved, but mixture becomes difficult to handle and apply
Solution Approach 1:
The patent optimizes the menthol content parameter within the range of 60-80 wt%, balancing scent persistence with handleability. Additionally, the inclusion of glycerin (10-30 wt%) and water (5-15 wt%) modifies the physical properties of the mixture, maintaining ease of application even at higher menthol concentrations.
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 sustained-release menthol maintains scent retention and storability, ensuring consistent flavor expression without loss, and can be easily applied to smoking articles for enhanced scent persistence.
Implementation Method 1
step S1 of melting menthol
Implementation Method 2
preparing a liquid mixture by mixing the molten menthol and glycerin
Implementation Method 3
preparing a solid dispersion by stirring the liquid mixture, wherein the solid dispersion is obtained by uniformly dispersing the menthol in the glycerin
Data Source
AI summary
A method of preparing sustained-release menthol is provided. The method includes step S1 of melting menthol, step S2 of preparing a liquid mixture by mixing the molten menthol and glycerin, and step S3 of preparing a solid dispersion by stirring the liquid mixture, wherein in step S2, an amount of the molten menthol is greater than an amount of the glycerin.