Sustained-Release Liquid Delivery Material for Smoking Articles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing smoking articles face challenges in retaining and stabilizing liquid flavorants and additives during storage, leading to reduced flavor intensity due to volatility and lack of consumer feedback on flavor release.
Innovation Solution
A smoking article incorporating a sustained-release liquid delivery material with a closed matrix structure formed from anionic polysaccharides cross-linked by multivalent cations and filled with amphiphilic polysaccharides, which traps a liquid composition and releases it upon compression, providing a progressive flavor release and sensory indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If liquid flavourant is incorporated into the filter or tobacco rod, then flavour is provided during smoking, but the flavourant migrates or evaporates during storage reducing available flavour
Solution Approach 1:
The patent uses a hydrogel matrix that acts as a flexible containment structure, trapping the liquid flavourant within its three-dimensional network. The hydrogel's polymeric structure provides a physical barrier that prevents evaporation while allowing controlled release upon compression, resolving the contradiction between retention and release.
Solution Approach 2:
The hydrogel matrix is inherently porous with a three-dimensional network structure that traps liquid flavourant within its domains. This porous structure provides large surface area for flavour release while maintaining containment during storage, addressing both flavour retention and controlled delivery.
2Ease of operation
If encapsulated flavourant is released by crushing capsules, then flavourant is released, but all flavourant is released at a particular force with no indication to consumer
Solution Approach 1:
The patent incorporates a sensory indication mechanism where the hydrogel matrix itself provides feedback to the consumer. Upon compression, the hydrogel undergoes a physical change (collapse of the three-dimensional network) that can be sensed by the consumer, providing information that flavour release has occurred without requiring additional indicators.
Solution Approach 2:
The patent allows for the hydrogel matrix to undergo visual or sensory changes upon compression that indicate flavour release. This could include color changes, texture changes, or other sensory cues that provide feedback to the consumer about the release status.
3Duration of action of moving object
If matrix structure is gradually broken down to release flavourant, then flavourant is released more gradually, but the structure does not break open providing little indication to consumer
Solution Approach 1:
The hydrogel matrix transitions from a stable, intact three-dimensional network during storage to a collapsed, open structure upon compression. This dynamic transformation allows the matrix to maintain flavour containment during storage while providing gradual release during smoking, with the structural change itself serving as the indication mechanism.
Solution Approach 2:
The hydrogel undergoes a phase transition upon compression, where the three-dimensional network collapses and the gel structure transforms. This phase change provides a sensory indication to the consumer while enabling controlled, gradual flavour release over an extended period.
4Quantity of substance
If volatile flavourant is used to provide flavour, then flavour intensity is achieved, but flavourant evaporates during storage
Solution Approach 1:
The hydrogel matrix creates a protected, inert environment within its three-dimensional network that isolates the volatile flavourant from the external atmosphere during storage. This containment prevents evaporation while the flavourant remains intact and ready for release upon compression.
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 effectively retains flavorants during storage, provides a controlled and progressive flavor release upon compression, and offers a sensory cue to the consumer, enhancing the smoking experience with improved stability and flavor intensity.
Implementation Method 1
The polymer matrix is formed of one or more anionic polysaccharides cross-linked by multivalent cations
Implementation Method 2
A liquid composition is trapped within the domains of the polymer matrix and is releasable from the closed matrix structure upon compression of the liquid release component
Data Source
Figure 1
AI summary
A smoking article (10) incorporates a liquid release component of a sustained release liquid delivery material (20), the liquid delivery material comprising a closed matrix structure having a polymer matrix defining a plurality of domains. A liquid composition is trapped within the domains and is releasable from the closed matrix structure upon compression of the liquid release component. The polymer matrix is formed of one or more anionic polysaccharides cross-linked by multivalent cations. A filler comprising one or more amphiphilic polysaccharides is incorporated within the polymer matrix. The one or more amphiphilic polysaccharides of the filler are selected from starch chemically modified to be amphiphilic and starch derivatives chemically modified to be amphiphilic.