Non-Heating Flavored Filter Placement for Nicotine Transfer
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Solution Overview
Problem
Non-heating-type aerosol generating devices face challenges in transferring free nicotine due to volatility and solubility issues when flavored filters are used, leading to reduced nicotine transfer and user dissatisfaction.
Innovation Solution
Positioning the flavored filter in the tobacco end (TE) portion of the aerosol generating article and adjusting the solvent content in the flavoring solution, such as using medium-chain triglyceride (MCTG) in limited amounts, to prevent nicotine reduction and maintain flavoring effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flavored filter is used in a non-heating-type aerosol generating device, then flavor satisfaction is improved, but nicotine transfer amount is reduced
Solution Approach 1:
The patent applies different qualities to different parts of the filter: the head portion contains flavoring agents for flavor satisfaction, while the body portion is designed to minimize nicotine absorption. This local differentiation allows the filter to provide flavor where needed while preserving nicotine transfer capability in the main body.
Solution Approach 2:
The patent changes physical parameters of the filter structure, specifically the porosity and density distribution between the head and body portions. The head portion has optimized parameters for flavor release, while the body portion maintains parameters favorable for nicotine permeability, thus resolving the contradiction between flavoring and nicotine transfer.
2Ease of manufacture
If free nicotine is transferred through a flavored filter, then flavor is provided, but nicotine dissolves into the filter and transfer is reduced
Solution Approach 1:
The filter is segmented into distinct functional zones: a head portion for flavoring and a body portion for nicotine transfer. This segmentation separates the conflicting functions of flavor provision and nicotine transfer, allowing each zone to be optimized for its specific purpose without interfering with the other.
Solution Approach 2:
The patent introduces an intermediary structure between the nicotine source and the user - a filter with differentiated zones that mediates the interaction between nicotine and flavoring agents. The body portion acts as an intermediary that allows nicotine to pass through while the head portion provides flavor, preventing direct dissolution of nicotine into the flavored liquid.
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
Effectively prevents nicotine transfer reduction while ensuring flavor satisfaction by positioning the flavored filter in the TE portion and controlling solvent use, enhancing user experience.
Implementation Method 1
the free nicotine is transferred and dissolved into the flavored filter due to volatility and solubility
Implementation Method 2
the free nicotine is transferred and dissolved into the flavored filter due to volatility and solubility
Data Source
AI summary
Provided are an aerosol generating article including a medium portion, and at least one filter portion, in which the filter portion is flavored, and the flavored filter portion is positioned in a tobacco end (TE) portion of the aerosol generating article, and an aerosol generating system including the same.