Surface-Heated Gel Formulation for E-Vaping Flavor Retention
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Solution Overview
Problem
E-vaping devices experience a loss of flavoring over time due to exposure to heat sources, reducing the sensory experience for adult vapers.
Innovation Solution
A cartridge for e-vaping devices uses an ethanol-free gel formulation containing a vapor former, water, and a biopolymer, which includes agar, kappa carrageenan, gelatin, sodium alginate, gellan gum, or pectin, to form a vapor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a flavor system is exposed to a heat source to produce vapor, then vapor generation is achieved, but flavoring is lost over time reducing shelf-life and sensory experience
Solution Approach 1:
The patent applies preliminary action by pre-mixing the flavoring agents into the e-liquid formulation before it is placed in the cartridge. This ensures that the flavoring is uniformly distributed and protected within the liquid matrix from the outset, preventing premature degradation when heat is applied during vaping.
Solution Approach 2:
The patent uses composite materials by formulating an e-liquid that combines multiple components including propylene glycol, vegetable glycerin, flavoring agents, and optionally nicotine. This composite formulation creates a stable mixture where the flavoring agents are integrated into the base liquid, protecting them from direct heat exposure and reducing degradation.
2Productivity
If the flavor system uses traditional e-liquid formulation, then vapor production is achieved, but flavor integrity deteriorates over extended periods
Solution Approach 1:
The patent applies parameter changes by carefully controlling the proportions of propylene glycol and vegetable glycerin in the e-liquid formulation. By adjusting these parameters within specific ranges, the invention optimizes both vapor production capability and flavor stability, creating a balanced formulation that maintains integrity over time while still producing adequate vapor.
Solution Approach 2:
The patent applies local quality by ensuring that flavoring agents are uniformly distributed throughout the e-liquid matrix. This uniform distribution creates localized protection where each flavoring molecule is surrounded by the viscous liquid components, reducing their exposure to degrading factors while maintaining overall formulation homogeneity for consistent vapor production.
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 ethanol-free gel formulation maintains flavor integrity by preventing flavor loss, ensuring a consistent sensory experience for adult vapers.
Implementation Method 1
The heater may volatilize the pre-vapor formulation to form a vapor
Implementation Method 2
The ethanol-free gel formulation may include a vapor former, water, and a biopolymer
Data Source
AI summary
An apparatus includes a body of pre-vapor formulation configured to be contained within a reservoir, the pre-vapor formulation being a gel formulation. The apparatus includes a surface heater in contact with a surface of the body of gel formulation, the heater being configured to heat the body of gel formulation to form a vapor.