Electrosprayed Microcapsules for Flavorant Delivery
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Solution Overview
Problem
Existing smoking articles with flavor-enhancing agents face issues of inconsistent flavor due to volatile flavors being irreversibly lost or chemically modified during smoking, leading to undesirable taste byproducts, and lack of stable retention of additives.
Innovation Solution
The development of capsules produced by electrospraying, such as microcapsules, nanocapsules, and 'core-shell' capsules, which encapsulate flavorants and non-flavorants within a polymeric material, allowing controlled release when interacting with mainstream smoke constituents, thereby stabilizing the additives and enhancing flavor consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If flavorants are incorporated into smoking articles using conventional methods, then taste enhancement is achieved, but the flavor enhancement is not long-lasting and results in inconsistent flavor
Solution Approach 1:
The patent embeds flavorant-containing capsules within the filter structure of the smoking article. These capsules are nested within the filter material, allowing them to be delivered systematically during smoking. The nested structure enables prolonged and consistent flavor release as the capsules gradually interact with mainstream smoke constituents.
Solution Approach 2:
The patent introduces capsules as intermediary carriers between the flavorant and the smoker's taste receptors. These capsules serve as a controlled-release mechanism, mediating the interaction between the flavorant and the smoking environment. The capsules are designed to interact with mainstream smoke constituents in a controlled manner, ensuring consistent and prolonged flavor delivery.
2Quantity of substance
If volatile flavors are incorporated into smoking products, then taste enhancement is achieved, but the flavors are irreversibly lost and cannot be stably retained
Solution Approach 1:
The patent employs capsule structures with flexible polymeric shells that enclose and protect the flavorant. These shells are designed to be permeable to smoke constituents but protective against flavorant volatilization. The flexible shell structure allows controlled interaction with the smoking environment while maintaining flavorant stability and preventing irreversible loss.
Solution Approach 2:
The capsule acts as an intermediary protective barrier between the flavorant and the smoking environment. This intermediary structure prevents direct exposure of the flavorant to conditions that cause volatilization and loss, while still allowing controlled release during smoking through interaction with mainstream smoke constituents.
3Reliability
If flavorants are applied to the surface of tobacco or packaging, then initial taste enhancement is achieved, but the flavorants are irreversibly lost during use
Solution Approach 1:
The patent transitions from surface application to nested encapsulation by placing flavorants inside capsules that are integrated within the filter. This nested structure provides stable retention throughout the product lifecycle and during use, preventing the irreversible loss that occurs with surface application. The capsules remain stable until activated by mainstream smoke constituents.
Solution Approach 2:
The patent performs preliminary encapsulation of the flavorant within the capsule structure during manufacturing. This preliminary action protects the flavorant from degradation and irreversible loss before the product is used. The capsules are pre-prepared with the flavorant enclosed, ensuring stability until the moment of controlled release during smoking.
4Ease of operation
If flavorant molecules are exposed to high internal temperatures during smoking, then delivery to taste receptors is achieved, but the molecules are chemically modified and produce undesirable taste byproducts
Solution Approach 1:
The patent employs capsule shells with controlled permeability that protect the flavorant from direct exposure to high temperatures during storage and handling. The flexible shell structure allows controlled interaction with mainstream smoke constituents at lower temperatures, preventing chemical modification while enabling efficient delivery to taste receptors through controlled release mechanisms.
Solution Approach 2:
The capsule serves as an intermediary protective barrier that shields the flavorant from harsh thermal conditions. This intermediary structure enables the flavorant to be delivered to taste receptors through controlled interaction with smoke constituents rather than direct thermal exposure, preventing chemical modification and undesirable byproduct formation while maintaining delivery efficiency.
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 encapsulation method provides smoking articles with a consistent and controlled delivery of flavorants and non-flavorants, increasing shelf life and flavor intensity by ensuring additives are released during smoking, reducing volatilization and undesirable taste byproducts.
Implementation Method 1
capsules produced by electrospraying
Implementation Method 2
capsule comprises at least one polymeric material that encapsulates or supports the retention of at least one flavorant and/or non-flavorant additive
Implementation Method 3
Flavorants and/or non-flavorant additives encapsulated in the inner core can be released by interacting with constituents in the mainstream smoke
Data Source
AI summary
A large variety of electroprocessed capsules can be produced to encapsulate a variety of additives within the subcompartments or substructures of the manufactured capsule. Furthermore, the manufactured capsules can be arranged within a filter of a smoking article during the manufacturing process. By modifying the various parameters that control the electrospraying or electrospinning processes, capsules can be manufactured that vary in composition, in substructural organization, and in dimension. A capsule produced by electrospraying comprises at least one polymeric material that encapsulates or supports the retention of at least one flavorant and/or non-flavorant within the capsule. A polymeric material provides a supporting structure for encapsulating at least one flavorant and/or non-flavorant additive. The capsules that can be produced by various electrospraying processes described below include microcapsules in a micro-scaled range, nanocapsules in a nano-scaled range, and various mixtures of microcapsules and nanocapsules.